Summary for Winter 2017/18

Sunnier than normal with around average rainfall and temperature.

Mean Max: 9.5ºC
Mean Min: 2.6ºC
Mean: 6.0ºC

High Max: 14.1ºC 30th Dec
Low Max: 1.2ºC 28th Feb
High Min: 10.7ºC 28th Jan
Low Min: -4.8ºC 28th Feb
Grass Min: -8.3ºC 28th Feb

Days >10°C 42 Days
Days >5°C 84 Days
Nights >10°C 2 Days
Nights <5°C 66 Days

Rain Total (gauge): 219.2 mm
Rain Days >0.2 mm: 46 Days
Rain Days >1.0 mm: 34 Days
Max 24 hrs: 16.3 mm 25 Dec
Days without any rain: 44

Air Frost: 28 Days
Grass Frost: 61 Days
Snow Falling: 1 Day 12th Feb
Snow (50%) @ 9am: 0 Days
Thunder Heard: 3 Days
Hail <5 mm: 8 Days
Hail >5 mm: 0 Days
Fog @ 9am: 2 Days

Total Winter Sunshine: 304.5 Hours
Most Sunshine in a Day: 9.9 Hours 25th Feb
Average Daily Sunshine: 3.4 Hours
Sunless Days: 15 Days
Cloudless Days: 8 Days
Total Possible Sunshine: 797 Hours
Percentage of Total Sun: 38%

Ave 10 Min Wind >39 mph: 0.00 mph
Mean Wind: 3.5 mph
Max Gust: 51 mph 13th Feb
Mean Cloud Cover: 53%
Mean RH @ 9am: 91%

Mean Pressure: 1014.0 hPa
Max Pressure: 1037.0 hPa 21st Dec
Min Pressure: 975.6 hPa 11th Dec

Max Dewpoint: 12.6ºC 4th Jan
Min Dewpoint: -12.8ºC 28th Feb
Mean Dewpoint: 3.5ºC

Max Humidity: 100% Several days
Min Humidity: 41% 28th Feb
Mean Humidity: 85%


‘Spring Snow!’

Difficult to tell how deep the snow is here as it is all blown around but as a rough guess there’s about 20 cm. The snow started off light this morning but has been steadily getting heavier and heavier.

The wind has also picked up through the afternoon and blowing all that snow around.

Quite a few roads now blocked, especially on high ground where there are probably blizzards.

Worse than the 19th/20th December 2010 because of the wind.

Maximum today so far is -2.4C.

And it is still snowing!

Summary for February 2018

An interesting and varied month! Colder, drier and sunny than normal. Coldest mean monthly temperature, and the highest amount of air and grass frosts recorded of any month since December 2010. Sunniest February in record (2005).

Mean Max: 8.4ºC
Mean Min: 0.6ºC
Mean: 4.5ºC

High Max: 13.3ºC 17th
Low Max: 1.2ºC 28th
High Min: 8.0ºC 19th
Low Min: -4.8ºC 28th
Grass Min: -8.3ºC 28th

Days >10°C 9 Days
Days >5°C 24 Days
Nights >10°C 0 Days
Nights >5°C 3 Days

Rain Total (gauge): 39.4 mm
Rain Days >0.2 mm: 9 Days
Rain Days >1.0 mm: 7 Days
Max 24 hrs: 11.0 mm 13th
Days without any rain: 19

Air Frost: 15 Days
Grass Frost: 25 Days
Snow Falling: 1 Day
Snow (50%) @ 9am: 0 Days
Thunder Heard: 0 Days
Hail <5 mm: 2 Days
Hail >5 mm: 0 Days
Fog @ 9am: 0 Days

Total Monthly Sunshine: 135.8 Hours
Most Sunshine in a Day: 9.9 Hours 25th
Average Daily Sunshine: 4.8 Hours
Sunless Days: 4 Days
Cloudless Days: 3 Days
Total Possible Sunshine: 281.6 Hours
Percentage of Total Sun: 48%
Average Sunny Interval: 18.1 mins

Ave 10 Min Wind >39 mph: 0.00 Days
Calm: 4.65 Days 25%
Mean Wind: 3.7 mph
Max Gust: 51 mph 13th
Mean Cloud Cover: 52%
Mean RH @ 9am: 90%

Mean Pressure: 1016.7 hPa
Max Pressure: 1029.7 hPa 26th
Min Pressure: 993.3 hPa 13th

Max Dewpoint: 10.4ºC 14th
Min Dewpoint: -12.8ºC 28th
Mean Dewpoint: 0.9ºC

Max Humidity: 99% 14th
Min Humidity: 41% 28th
Mean Humidity: 79%

February Sunshine

Passed 100 hours of sunshine today putting this February in the sunny(ish) category. My sunniest February was in 2008 with 130 hours.

Unbroken sunshine all day so far and today’s total is likely to exceed 10 hours for the first time since the 3rd October, though several days have come close over the last week.

With just a very light breeze and a maximum of 7.3C, it was a lovely day and quite pleasant to be sat outside in the warm sunshine. The sun’s elevation now above 30°.

Still, the monthly average temperature is below normal and likely to fall further. This month now holds the record for the greatest number of air frosts in February (12 so far), and the largest number since December 2010 (though none of the frosts have been severe).

1st – 24th
Mean minimum = 1.1C
Mean maximum = 9.2C
Mean = 5.2C
Rain = 37.6 mm
Sunshine = 107 hours.

15th February 2018 – Cold(ish) So Far

It has been a cold February so far (coldest mean temperature since December 2010) but the days have generally been near average, it is the nights with their high prevalence of frosts that have dragged the mean temperature right down.

It seems at the moment that the mild scenario forecast is winning out and if so, the second half could end up rather different.

1st – 15th February 2018
Mean minimum = 0.5C
Mean maximum = 8.9C
Mean = 4.7C
Rain = 36 mm
Sunshine = 62 hours.

The extra strength of the sun is becoming very noticeable now and today’s prolonged afternoon sunshine helped the temperature up to 11.8C.

12th February 2018 – A Sparking Late Winter’s Day

I don’t think winter days could get much better than today.

Crystal clear air with superb visibility; fantastic, towering cloudscapes and dazzling, warm sunshine. With hardly a breath of wind and a maximum of 9.8C, how could it get any better!

And a rare thing happened, there must have been a snow shower overnight and it left a dusting on the grass and pavements. The first snow I’ve seen on the ground (albeit a micro-thin layer) since the 26th December 2010.

As soon as the sun was up it all melted. Still, it was the 6th air frost this month, though none have been severe.

And it has been a reasonably sunny start to February with today’s 6.2 hours bringing the monthly total to 51 hours.

This month so far has the coldest mean temperature since December 2010. But the 2nd half of February is often a fair bit warmer than the first half due to the increasing strength of the sun, so that may change.

Summary for January 2018

Warmer than normal with around average rainfall and just a little below my estimated LTA for sunshine. Overall, a generally mild and pleasant month.

Mean Max: 10.5ºC
Mean Min: 3.7ºC
Mean: 7.1ºC

High Max: 14.0ºC 23rd
Low Max: 4.3ºC 8th
High Min: 10.7ºC 28th
Low Min: -2.4ºC 30th
Grass Min: -4.4ºC 6th

Days >10°C 18 Days
Days >5°C 30 Days
Nights >10°C 2 Days
Nights >5°C 11 Days

Rain Total (gauge): 82.7 mm
Rain Days >0.2 mm: 20 Days
Rain Days >1.0 mm: 15 Days
Max 24 hrs: 9.8 mm 16th
Days without any rain: 11

Air Frost: 6 Days
Grass Frost: 16 Days
Snow Falling: 0 Days
Snow (50%) @ 9am: 0 Days
Thunder Heard: 1 Day 3rd
Hail <5 mm: 4 Days
Hail >5 mm: 0 Days
Fog @ 9am: 2 Days

Total Monthly Sunshine: 77.4 Hours
Most Sunshine in a Day: 7.2 Hours 7th
Average Daily Sunshine: 2.5 Hours
Sunless Days: 6 Days
Cloudless Days: 2 Days
Total Possible Sunshine: 265.3 Hours
Percentage of Total Sun: 29%
Average Sunny Interval: 15.9 mins

Ave 10 Min Wind >39 mph: 0.00 Days
Calm: 5.63 Days 18%
Mean Wind: 3.8 mph
Max Gust: 46 mph 24th
Mean Cloud Cover: 66%

Mean Pressure: 1010.9 hPa
Max Pressure: 1033.6 hPa 28th
Min Pressure: 992.4 hPa 5th

Max Dewpoint: 12.6ºC 4th
Min Dewpoint: -3.1ºC 30th
Mean Dewpoint: 5.1ºC

Max Humidity: 100% Several days
Min Humidity: 65% 25th
Mean Humidity: 87%