Monthly Archives: January 2018

23rd January – Spring-like warmth

I was surprised as to how warm it felt this afternoon. During one of the sunnier spells it reached 14.0°C and even the wind felt warm. Absolutely lovely it was, especially with everything drying up.

My estimated average maximum is around 9.0°C, so 5°C above the normal today.

The warmth of the last week or so has been noteworthy(ish):

Date and maximum temperature
15th 12.3°C
16th 8.7°C
17th 9.1°C
18th 12.1°C
19th 8.9°C
20th 12.2°C
21st 13.3°C
22nd 12.6°C
23rd 14.0°C

In fact, looking back at the whole of January so far, I’ve realised that the cold air doesn’t really seem to have reached here and the only low temperatures were due to a couple of slight(ish) air frosts during clear, calm conditions at night. Mean maximum temperature for the month now at 10.2°C.

Even Sharper Temperature Contrast

A repeat of what has happened several times this winter, there is a large temperature contrast between the South West and Up Country.

Temperature reached 13.3C here this afternoon and yet, not so far away it seems the temperature was struggling to get more than a degree or so above freezing.

The drop-off in temperature started not that far to the north and east of here with places like Yeovilton only around 3C. It has started to warm up there now with the cold air still hanging on as far south and west as Worcestershire and north Gloucestershire (at 16:00).

Still haven’t seen as much as a flake of snow this winter, then again, that’s nothing unusual.

January (1st – 21st) temperatures are running just slightly above normal:
Mean maximum = 10.0C
Mean minimum = 3.2C
Mean = 6.6C
Rain = 61 mm
Sun = 60 hours

Sharp Temperature Contrast

Quite a sharp temperature contrast Up Country, only 3C at Bristol and 2C at Pershore. Meanwhile here it is currently 9.7C at 18:50 and the maximum today was 12.2C.

The breeze was ‘soft’ and apart from the odd light shower it was mostly bright, though we only managed 1 hour of actual sunshine. Brings the monthly total to a fairly average 59 hours.

Spring Before Winter’s Return

A surprising touch of ‘spring’ this afternoon. The morning rain cleared and I expected the temperature to drop away in the clearance but instead it went up from 11C at 9am (during the rain) to a maximum of 12.3C before slowly cooling from mid-afternoon. Still 8.1C at 19:45.

With light winds and nearly 4 hours of sunshine, it was a lovely day.

The gorse flowers are looking a treat, and the catkins are out as well as a few primroses here and there. I’ve even seen the proverbial daffs and crocuses out in sheltered spots. Little do they know what’s coming!

T’missus wants to go up Dartmoor on Saturday to get a snow-fix. I expect the Devonshire hordes will be heading there too with their sledges.

All change tomorrow – brrrrr! Still, it might be a fairly sunny spell here despite the chill.

Summary for 2017

Warmer and a little drier than normal with below average sunshine.

Mean Max: 16.0ºC
Mean Min: 7.6ºC
Mean: 11.8ºC

High Max: 31.1ºC 20 Jun
Low Max: 3.3ºC 11 Feb
High Min: 18.4ºC 19 Jul
Low Min: -4.3ºC 03 Jan
Grass Min: -5.6ºC 03 Jan

Days >25°C 17 Days
Days >20°C 85 Days
Days >15°C 214 Days
Days <10°C 49 Days

Rain Total (gauge): 748.6 mm
Rain Days >0.2 mm: 162 Days
Rain Days >1.0 mm: 124 Days
Max 24 hrs: 32.3 mm 01 May
Days without any rain: 203

Air Frost: 26 Days
Grass Frost: 34 Days
Snow Falling: 1 Day 11th Feb
Snow (50%) @ 9am: 0 Days
Thunder Heard: 11 Days
Hail <5 mm: 5 Days
Hail >5 mm: 1 Days
Fog @ 9am: 3 Days

Total Annual Sunshine: 1757.4 Hours
Most Sunshine in a Day: 15.6 Hours 17 Jun
Average Daily Sunshine: 4.8 Hours
Sunless Days: 41 Days
Cloudless Days: 49 Days
Total Possible Sunshine: 4477 Hours
Percentage of Total Sun: 39%
Maximum UV Index: 9.1 08 Jul

Ave 10 Min Wind >39 mph: 0.00
Calm: 26.1 Days
Mean Wind: 3.7 mph
Max Gust: 44 mph 23 Nov

Mean Pressure: 1016.6 hPa
Max Pressure: 1037.5 hPa 18 Jan
Min Pressure: 975.6 hPa 11 Dec

Max Dewpoint: 21.4ºC 20 Jun
Min Dewpoint: -5.6ºC 03 Jan

Summary for December 2017

A little sunnier and rather wetter than normal with slightly below average temperature. An unusually high amount of air and grass frosts.

Mean Max: 9.4ºC
Mean Min: 3.2ºC
Mean: 6.3ºC

High Max: 14.1ºC 30th
Low Max: 3.9ºC 9th
High Min: 9.3ºC 25th
Low Min: -3.9ºC 12th
Grass Min: -5.6ºC 9th

Days >10°C 15 Days
Days >5°C 30 Days
Nights >5°C 10 Days
Nights >0°C 24 Days

Rain Total (gauge): 97.1 mm
Rain Days >0.2 mm: 17 Days
Rain Days >1.0 mm: 12 Days
Max 24 hrs: 16.3 mm 25th
Days without any rain: 14

Air Frost: 7 Days
Grass Frost: 20 Days
Snow Falling: 0 Days
Snow (50%) @ 9am: 0 Days
Ice Days: 0 Days
Thunder Heard: 2 Days
Hail <5 mm: 2 Days
Hail >5 mm: 0 Days
Fog @ 9am: 0 Days

Total Monthly Sunshine: 91.4 Hours
Most Sunshine in a Day: 7.6 Hours 1st
Average Daily Sunshine: 2.9 Hours
Sunless Days: 5 Days
Cloudless Days: 6 Days
Total Possible Sunshine: 249.7 Hours
Percentage of Total Sun: 37%
Average Sunny Interval Length: 19.3 mins

Ave 10 Min Wind >39 mph: 0.00 Days
Calm: 7.44 Days 24%
Mean Wind: 3.6 mph
Max Gust: 40 mph 29th

Mean Pressure: 1014.7 hPa
Max Pressure: 1037.8 hPa 21st
Min Pressure: 975.6 hPa 11th

Max Dewpoint: 12.1ºC 7th
Min Dewpoint: -5.0ºC 12th
Mean Dewpoint: 4.3ºC

Max Humidity: 100% Several days
Min Humidity: 60% 8th
Mean Humidity: 89%