December 2016 Weather

A mild month with temperatures generally above average throughout, especially during the first half, though a colder spell towards the end of the month (after Christmas) did at least help to keep temperatures less than 2 C above the long term average. Unsurprisingly any wintry weather was limited to just a handful of frosts, again most of these coming after Christmas, with snow again conspicuous by its complete absence during what is supposed to be the first month of the British meteorological winter. Indeed it is worth highlighting that the last time lying snow was recorded during December at our weather station near Beverley was way back on the 6th December 2012!

Rainfall wise the month was dry, the monthly rainfall total coming to just 50% of the long term average for December, the dominance of high pressure throughout most of the month ensuring that conditions were largely quiet and settled (at least here in eastern England). However despite the lack of rainfall it never really felt like a dry month, the lack of wind, especially prior to the 20th, and some particularly dull days during the middle of the month, meaning that conditions remained almost constantly damp and dreek. Mud and standing water were a particular problem in the fields and the wider countryside in general, especially with virtually zero evapotranspiration at this time of year.

Conditions would become more mobile during the final third of the month, with some fresh to strong winds either side of Christmas, whilst Christmas Day itself was exceptionally mild with the temperature reaching 13.8 C on the big day. In fact this makes it the warmest Christmas Day on our records dating back to 2003! After Boxing Day things would become colder and much more seasonal with some much needed frosts, the hoar frost managing to survive all day in the shade on the 28th & 29th, whilst the clear and crisp sunhine of the post Christmas period also helped to push the monthly sunshine total up above average, over 30 hours of sunshine being recorded in the last seven days of the month alone. Winds meanwhile were predominantly from the south and west throughout the course of the month with just one day seeing winds from the northern quarter, and it will be interesting to see whether the weather will continue in the same vein after the New Year.

AVERAGE TEMPERATURE : 5.9 C (+1.5 C)
AVERAGE MAXIMUM : 8.8 C
AVERAGE MINIMUM : 3.0 C
HIGHEST MAXIMUM : 13.8 C, 25th
LOWEST MAXIMUM : 2.8 C, 29th
HIGHEST MINIMUM : 8.9 C, 8th
LOWEST MINIMUM : -3.1 C, 28th
GRASS FROSTS : 10
AIR FROSTS : 5
FROST DURATION : 39 hours

TOTAL RAINFALL : 29.9 mm (50%)
MAXIMUM TOTAL : 7.3 mm, 7th
DAYS =>0.2 mm : 14
DAYS =>1.0 mm : 8
DAYS =>10.0 mm : 0
TOTAL RAIN DURATION : 42 hours

TOTAL SUNSHINE : 68.1 hours (132%)
AVERAGE PER DAY : 2.20 hours
SUNLESS DAYS : 6

AVERAGE WIND SPEED : 1.6 knots
MAXIMUM GUST : 33 knots, 23rd & 26th
DAYS =>34 knots : 0

WIND DIRECTION FREQUENCY
N 0, NE 0, E 1, SE 4, S 9, SW 5, W 11, NW 1

AVERAGE PRESSURE : 1024.7 hPa
MAXIMUM PRESSURE : 1043.4 hPa, 28th
LOWEST PRESSURE : 1008.0 hPa, 23rd

DAYS WITH FOG : 4
DAYS WITH THUNDER : 0
DAYS WITH HAIL : 0
DAYS WITH SNOW FALLING : 0
DAYS WITH SNOW LYING : 0
MAXIMUM SNOW DEPTH : 0 cm
MONTHLY SNOW INDEX : 0 cm/days

december-2016
December 2016 Logbook (click to enlarge)

1st December 2016, Thursday
2.4 C to 10.2 C / 0.0 mm / 3.7 hours / W 3
A cloudy start to the new month but things would brighten up by the end of the morning with some good spells of sunshine in the afternoon. Feeling mild as well with temperatures climbing into double figures. Clear spells in the evening but becoming cloudy overnight.

2nd December 2016, Friday
4.4 C to 9.1 C / 1.0 mm / 0.6 hours / NW 1-2
A largely cloudy day, though not without the odd sunny spell during the middle of the day, though in the afternoon the cloud would thicken with some light rain and drizzle in mid-afternoon and early evening. This rain would clear by 6 pm to leave a mostly cloudy night with just the odd clearer spell from time to time.

3rd December 2016, Saturday
3.9 C to 6.6 C / 0.0 mm / 0.6 hours / E 1
Another mostly cloudy day with just the odd brighter spell from time to time, especially around the middle of the day. Feeling colder as well with temperatures slightly below average for early December. Remaining mostly cloudy overnight.

4th December 2016, Sunday
4.2 C to 8.4 C / 0.0 mm / 5.6 hours / SE 3
Another mostly cloudy start to the morning but things would quickly brighten up with plenty of sunshine in the second half of the morning and the afternoon. Remaining clear throughout the evening and overnight with temperatures dipping below freezing.

5th December 2016, Monday
-1.6 C to 3.5 C / trace / 1.2 hours / SE 0-1
A cold and still winter’s day which began with a decent frost upon the ground, this frost just about managing to survive all day in any shady cold spots. It was also a bright, if not particularly sunny day, the sunshine diffused by extensive thin and hazy cloud. Remaining largely clear into the evening and night, this allowing temperatures again to dip below freezing figures, though latterly freezing fog would form, this becoming dense by dawn.

6th December 2016, Tuesday
-1.7 C to 9.2 C / 0.5 mm / 0.0 hours / S 3-4
A raw and foggy start to the day, visibility reduced to around 100 metres, though as the morning wore things would slowly improve, indeed around the middle of the day it even become quite bright. However this wouldn’t last long with overcast skies and fog soon returning, the day concluding on a very dull note. In the evening the fog would lift to be replaced by light drizzle, though the most notable feature of the weather by this point was the rising temperature, this continuing to rise throughout the night. Remaining overcast overnight with periods of intermittent rain from time to time.

7th December 2016, Wednesday
0.1 C to 12.2 C / 7.3 mm / 0.6 hours / S 4
An overcast and dull morning, though the main feature of the weather was the mildness, the temperature almost in double figures at 9 am (the quoted minimum for the day actually coming yesterday morning due to one of the quirks of weather recording). It would remain mild throughout the day, whilst in the afternoon it would also brighten up with some spells of sunshine from time to time as well. Cloud increasing again in the evening and continuing to thicken throughout the night with persistent rain arriving from the south by the end of the night.

8th December 2016, Thursday
8.9 C to 13.1 C / 2.0 mm / 0.2 hours / W 4
A thoroughly wet start to the morning with persistent moderate to heavy rain, this making conditions under-foot rather muddy to say the least, though as the morning wore on it would clear away eastwards with conditions become dry by midday. Largely cloudy in the afternoon though towards the end of the afternoon some breaks would permit the odd brighter and sunnier period, these breaks becoming larger after dusk with some good clear spells in the evening and at first overnight. However cloud would increase once more after midnight with overcast skies by dawn.

9th December 2016, Friday
5.1 C to 13.0 C / 0.5 mm / 0.0 hours / S 3-4
A dull, overcast and exceptionally mild day with temperatures once more climbing up to 13 C, the chilly weather during November and at the start of the December already becoming a distant memory. Surely we are not on course for yet another mild winter! Little change in the evening and overnight, indeed the cloud would actually thicken enough for some periods of mostly light rain and drizzle at times.

10th December 2016, Saturday
7.8 C to 11.2 C / 0.7 mm / 0.0 hours / W 3
Another dull and cloudy day with little to commend it, though it was slightly cooler than recent days, especially out in the open. In the evening the cloud would bring some periods of mostly light rain and drizzle, this continuing on and off into the first half of the night, but after midnight conditions would become drier to leave a largely cloudy end to the night.

11th December 2016, Sunday
5.9 C to 9.8 C / 0.0 mm / 1.5 hours / W 3
A mostly cloudy start to the day but in the second half of the morning some good spells of winter sunshine would bring some welcome brightness after a couple of sunless days. However in the afternoon skies would once again become mostly cloudy, bar the odd break from time to time, and it would remain mostly cloudy throughout the evening and indeed throughout the night. Feeling a little cooler and more seasonal than of late as well.

12th December 2016, Monday
3.2 C to 8.3 C / 1.0 mm / 1.4 hours / SE 0-1
A cool and misty start to the day, the mist becoming thick enough to be classed as fog for a time in mid morning, but this would clear by 11 am with some good spells of sunshine developing for a time during the middle of the day. However by 2 pm skies would become grey and overcast once more, and by the evening the cloud would be thick enough to produce some light drizzle, these outbreaks of mostly light rain and drizzle continuing on and off for the rest of the night. Temperatures rising overnight.

13th December 2016, Tuesday
3.1 C to 10.8 C / 3.2 mm / 0.2 hours / S 2
A dull, damp and murky morning with poor visibility, especially up on the Wolds, though towards the end of the morning and around midday things would brighten up briefly with even some spells of welcome sunshine. However this wouldn’t last with overcast skies soon returning, this cloud bringing some outbreaks of rain during the afternoon. Further and more persistent rain and drizzle in the evening and for much of the night but eventually dying out later. Temperatures again rising overnight with the thermometer in double figures by dawn.

14th December 2016, Wednesday
7.8 C to 11.0 C / trace / 1.9 hours / S 1-2
Another grey morning with predominantly overcast skies but by midday things would quickly improve with partly cloudy skies and occasional spells of mid-December sunshine during the afternoon. Becoming clear for a time in the evening but cloud would increase again after midnight with overcast skies and murk returning once more by the end of the night.

15th December 2016, Thursday
4.7 C to 8.3 C / trace / 0.0 hours / SE 1
An overcast and dull day with no brightness, wind or indeed anything worthy of mention. Little change in the evening and overnight, though around 9 pm the cloud was thick enough to produce a few spots of rain. It would also become murkier during the night with mist and generally poor visibility by the end of the night.

With half of December now concluded it looks like this last month of the calendar year is going to conclude on a mild and dull note, temperatures currently standing at 2.3 C above the long term average. Night-time temperatures have been especially above average, indeed just two ground frosts have been recorded as of the 15th, whilst the sunshine total for the month is a meagre 17.5 hours, an average of just 1.16 hours a day. However on the plus side it has been relatively settled with no strong winds and less rainfall than normal, though despite the lack of rain the countryside is as muddy as I can remember for quite some time.

16th December 2016, Friday
6.6 C to 8.5 C / 0.0 mm / 0.5 hours / W 2
Another dull and overcast morning with low cloud and murk at first, but after midday things would begin to brighten up with even some spells of sunshine developing by 2 pm. Remaining bright for the rest of the day, though after dusk mist and fog would quickly form, this persisting throughout the evening. However latterly things would clear with a fat gibbous moon lighting up the rest of the night.

17th December 2016, Saturday
3.1 C to 6.9 C / 0.0 mm / 5.9 hours / W 1-2
A clear and cool start (well at least by recent standards), and remaining mostly clear with good spells of sunshine for much of the day, most welcome after all the recent grey and overcast weather of recent days. Clear spells in the evening and for most of the night, this allowing temperatures to dip low enough for a ground frost (just the third so far this month!), but cloud would increase later with temperatures soon rising with it.

18th December 2016, Sunday
2.3 C to 8.2 C / 0.0 mm / 0.5 hours / W 1-2
A largely cloudy day for the most part, though in the afternoon a few breaks would develop to allow some pale wintry sunshine. Clear spells in the evening and at first overnight, though after midnight cloud amounts would become more variable with alternating cloudier and clearer periods. However it would become clearer again prior to dawn with a touch of ground frost by the end of the night.

19th December 2016, Monday
2.4 C to 6.8 C / 0.2 mm / 0.0 hours / W 1-2
A chilly and misty start with a touch of frost in rural areas, but by mid-morning conditions would become cloudy and grey and would remain so for the duration of the day. Little change in the evening and overnight, indeed the cloud would be thick enough for a little bit of light rain and drizzle prior to midnight.

20th December 2016, Tuesday
3.7 C to 6.5 C / 0.8 mm / 4.9 hours / S 4
A cloudy morning for the most part but things would quickly brighten by the end of the morning with long spells of sunshine developing by midday and for much of the afternoon. Remaining clear into the evening but cloud would increase overnight with some rain for a time around 3 am. Becoming drier by dawn though.

21st December 2016, Wednesday
2.4 C to 7.9 C / 0.0 mm / 1.3 hours / SW 3
A cloudy and grey morning, the ground wet after overnight rain, but by midday things would begin to brighten up with sunny spells developing in the afternoon. Clear spells and variable amounts of cloud in the evening and overnight with temperatures dipping close to freezing.

22nd December 2016, Thursday
0.3 C to 7.3 C / 0.0 mm / 5.6 hours / S 3-4
A clear and chilly start, the ground white with frost, but this would soon melt in the late December sunshine which would bathe the local countryside for most of the day. Clear spells continuing into the evening and for much of the night but cloud would increase later with grey skies by dawn.

23rd December 2016, Friday
2.9 C to 10.7 C / 2.5 mm / 0.1 hours / SW 5-6
A cloudy and windy day with gusts of up to gale force, the wind being particularly gusty in the afternoon when two distinct bands of rain sweeped through the East Riding, the first coming around the middle of the day and the second around dusk and early evening, the second band being particularly heavy with a peak rainfall rate of 39.0 mm/h. After the rain cleared the sky would clear somewhat with variable amounts of cloud for the rest of the night, though latterly showers would arrive from the SW.

24th December 2016, Saturday
4.8 C to 12.3 C / 2.2 mm / 0.0 hours / SW 4-5
A showery morning, some of these showers being quite sharp, but becoming drier by the afternoon. However it would remain grey and cloudy, though as the afternoon wore on it was the rising temperatures which were most notable, hardly very Christmassy! Remaining cloudy and mild throughout Christmas night with temperatures well in excess of 10 C by dawn.

25th December 2016, Christmas Day
4.8 C to 13.8 C / 0.9 mm / 2.3 hours / W 5
A cloudy and exceptionally mild start to Christmas Day, the temperature almost 12 C at dawn, and it would remain mostly cloudy throughout the morning. However by midday some brighter periods would develop, indeed for much of the afternoon it was almost spring like in the sunshine with temperatures eventually reaching a very unseasonal 13.8 C. Becoming breezier in the evening with a period of showers during the night, and as the temperatures dropped sharply, some of these showers would become quite icy towards the end of the night.

26th December 2016, Monday
4.7 C to 7.2 C / 0.0 mm / 5.7 hours / W 5
A lovely sunny and cool Boxing day with an abundance of late December sunshine bathing the countryside of the East Riding, though it was quite blustery throughout much of the day, especially in the afternoon with gusts of up to nearly gale force. Remaining clear in the evening and overnight with the breeze easing somewhat, this allowing temperatures to dip low enough for a ground frost.

For the first time in what has felt like weeks, the ground actually dried up today, fresh winds, lower humidity and lower temperatures allowing the all pervasive dampness which has dominated December to finally relent… for now.

27th December 2016, Tuesday
2.0 C to 6.2 C / 0.0 mm / 5.2 hours / W 1-2
A beautiful winter’s day with clear skies throughout, and an abundance of weak winter sunshine bathing the East Yorkshire countryside. Remaining clear in the evening and overnight with a hoar frost soon forming, the temperature eventually falling to -3.1 C by the end of the night.

28th December 2016, Wednesday
-3.1 C to 3.3 C / 0.0 mm / 5.5 hours / S 1-2
Another beautiful winter’s day with crisp December sunshine throughout, the heavy hoar frost persisting all day in the shade. Becoming foggy for a time in the evening but this would clear by midnight with skies becoming clear once again. However unlike last night temperatures would remain just above freezing, though nevertheless a good frost would form upon the ground once more.

29th December 2016, Thursday
-1.8 C* to 2.8 C / 0.0 mm / 6.1 hours / S 1
A clear and frosty start to the day, the roads covered in frost and ice (I fell off my bike near Weel), and it would remain clear, sunny and chilly throughout the day, the frost once more surviving all day in the shade. Clear overnight with temperatures dipping just below freezing.

30th December 2016, Friday
-0.6 C to 8.4 C / 0.0 mm / 5.0 hours / SW 2
Another clear and frosty start, and whilst it would remain sunny and clear for much of the day, fog and low cloud would arrive from the north during the afternoon, the fog becoming quite thick by dusk. During the evening the fog would come and go, though by midnight the skies would become mostly clear to leave a largely quiet night. However temperatures would slowly rise as the night wore on with any remaining icy patches gone by dawn.

31st December 2016, Saturday
1.7 C to 10.1 C / 7.1 mm / 2.0 hours / SW 3
A mild and bright end to the year with alternating sunny and cloudier periods, the temperature just about reaching double figures for a time in early afternoon. Clear for a time in the evening but cloud would increase by midnight with outbreaks of rain soon following, this rain becoming persistent for the remainder of the night.