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1941 Cold, Dull and Wet,
In the year that Plutonium was first produced, the sculptures of 4 American Presidents were completed on Mount Rushmore after 14 years work, and the United States entered the Second World War after the Japanese attack on Pearl Harbour.
Weather Notes:-
4th January - Maximum temperature of minus 9°C. at Eskdalemuir (Dumfries and Galloway) with a minimum temperature of minus 20°C. at Houghall (Durham) on the following night.
20th February - Over 100cm of level snow in Durham after more than 2 days of continuous snow.
11th May - Minimum temperature of minus 9°C. Celsius at Lynford (Norfolk). A similar reading was thought to have occurred at the same place a week earlier.
13th December - Minimum temperature of minus 53°C at Malgovik, the lowest value ever recorded in Sweden.

In London...
 Temperature 9.9°C  Rainfall717.8 mm  Warmest 31.5°C
 Sunshine1341 hrs   Coldest -5.9°C

JanuaryVery cold and dull with above average rainfall.
 Mean Temperature  1.5°C  
 Monthly Highest  8.3°C  Total Rain 62 mm
 Monthly Lowest -5.9°C Total Sun 26 hrs

The early part of the month was dominated by bitterly cold easterly winds with frost and some snow. On the 2nd, the temperature failed to rise above minus 1.1°C. The minimum on the night of the 15th/16th almost fell to minus 6°C, but during the third week a thaw set in as heavy snow turned to rain, it became misty, and temperatures slowly rose. On the 20th, nearly 19mm of rain (including melted snow) fell, and on the 22nd the temperature rose above 8°C. 

February - Dull and rather wet with temperatures close to normal. 
 Mean Temperature  4.3°C  
 Monthly Highest 11.3°C  Total Rain 49 mm
 Monthly Lowest -5.2°C Total Sun 53 hrs

The early part of the month was cold with frost and some snow. After a minimum temperature below minus 5°C. on the night of the 4th/5th, outbreaks of snow occurred during the day and the maximum temperature was only 0.8°C. A thaw set in at the end of the first week, and on the 8th the maximum was above 11°C. Temperatures were then mostly near normal, but it was changeable, and although rainfall was mostly light, over 6mm was measured on the 27th

March - Very wet, dull and rather cold.
 Mean Temperature  5.7°C  
 Monthly Highest 12.8°C  Total Rain 81 mm
 Monthly Lowest -3.2°C Total Sun 96 hrs

The early part of March was unsettled with heavy rain at times. On the 6th, over 22mm fell. During the second week it became dry with sunny periods. There were some frosty nights and lingering fog. On the 12th, the maximum temperature was only a little over 5.2°C. Temperatures slowly rose during the third week, and on the 21st, as unsettled weather returned, the temperature rose close to 13°C. It then stayed changeable to the end of the month with varying temperatures.

April - Very dull and cold with rainfall slightly below normal
 Mean Temperature  7.2°C  
 Monthly Highest 14.9°C  Total Rain 44 mm
 Monthly Lowest -0.4°C Total Sun 96 hrs

The month began unsettled with nearly 11mm of rain falling on the 1st. However, there was plenty of dry weather during April although the sky was frequently cloudy. There were several cold days early in the month, and the highest temperature on the 6th was only 5.5°C. The last air frost of the Spring occurred early on the 10th, but although nights became milder, days remained cold, and even on the warmest day of the month, the 15th, the temperature failed to reach 15°C.
 
May - Very cool and dull with rainfall slightly above average.
 Mean Temperature  9.6°C  
 Monthly Highest 18.9°C  Total Rain  47 mm
 Monthly Lowest  0.3°C Total Sun 149 hrs

The first 3 weeks of May were mostly cool or very cool with plenty of cloud but with some sunny, then clear,  periods to allow ground frost to form at times overnight. On the 16th the air temperature dropped to 0.3 Celsius after a high the previous day of only 9.3°C. Rainfall was generally light with many dry days, but the last week, although a little warmer, was also wetter. On the 26th, over 12mm of rain fell, and the maximum temperature on the 28th almost reached 19°C.
  
June - Above average temperatures and rainfall, and near normal sunshine
 Mean Temperature 16.4°C  
 Monthly Highest 30.6°C  Total Rain  49 mm
 Monthly Lowest  7.2°C Total Sun 215 hrs

The first 10 days of  June were mostly cool and unsettled with showers or longer spells of rain. On the 3rd the maximum temperature was only 12°C, and on the 9th more than 12mm of rain fell.  From the 11th, although rather chilly at first, it became warmer and sunnier, with no measurable rain during the remainder of the month.  On the 22nd, the temperature almost reached 30 Celsius, before somewhat cooler weather set in during the final week of June.

July - Wet, but sunny and rather warm.
 Mean Temperature 18.8°C  
 Monthly Highest 31.5°C  Total Rain 103 mm
 Monthly Lowest 11.1°C Total Sun 244 hrs

The opening week was dry, sunny and warm. The first rain of the month, on the 8th, preceded higher temperatures. On the 11th the maximum was over 31°C.  A thundery breakdown of the weather followed, and on the 16th the high was only 17.3°C. The remainder of the month was often warm but there were some thundery downpours. On the 26th, nearly 31mm of rain fell, and on the last day of the month it was cool with a maximum temperature of only 17.3°C. again.
    
August - Very wet, cool and rather dull.
 Mean Temperature 15.5°C  
 Monthly Highest 23.2°C  Total Rain 150 mm
 Monthly Lowest  9.1°C Total Sun 170 hrs

In this very disappointing summer month there were no warm days, and  the temperature only exceeded 23°C. on one occasion, the 3rd. There were several cool and cloudy days, and many heavy thundery downpours. On the 18th , more than 29mm of rain fell, and on the 23rd the afternoon 
temperature only reached 16.1°C. At the end of the month it became fine and a little warmer, and on the final day of August it was sunny throughout the day. 

September - Very dry and dull with above average temperatures.
 Mean Temperature 15.3°C  
 Monthly Highest 25.3°C  Total Rain  9 mm
 Monthly Lowest  4.6°C Total Sun 113 hrs

No measurable rain fell during the first 25 days of September. After a warm start to the month, with a maximum temperature above 25°C. on the 3rd, it became cooler at the end of the second week and often rather cloudy. On the 15th the afternoon temperature only reached 14.3°C. Further rather warm days then occurred but the weather eventually became unsettled. On the 28th, nearly 6mm of rain fell, 1 of only 3 days during the month with significant rainfall.

October - Very dry, with above average sunshine and near normal temperatures.
 Mean Temperature  10.8°C  
 Monthly Highest  21.5°C  Total Rain  19 mm
 Monthly Lowest  1.2°C Total Sun 104 hrs

The first week was mostly warm and fairly sunny but with some overnight fogs. On the 6th, the temperature rose above 21°C. It became rather unsettled during the second week,  and changeable weather then lasted for the rest of the month. However, amounts of rain were small with a total on the wettest day, the 11th, of less than 5mm. The last few days of October were quite cold with sunny spells, and on the 29th the highest temperature was only 7.2°C.

November - Dull with temperatures slightly below average and near normal rainfall.
 Mean Temperature  7.0°C  
 Monthly Highest 14.4°C  Total Rain 64 mm
 Monthly Lowest -2.6°C Total Sun 39 hrs

The month began with plenty of dry weather and some spells of  sunshine. On the 4th the maximum temperature was only 4.8°C.  An unsettled second week produced 16mm of rain on the 11th, but then further fine days occurred during the third week with a few frosty nights. The latter part of the month was generally mild and changeable, but although there was plenty of cloud, rainfall amounts were mostly small. On the 22nd the temperature exceeded 14°C.

December - Rather dry with above average temperatures and below normal sunshine.
 Mean Temperature  5.6°C  
 Monthly Highest 13.3°C  Total Rain 40 mm
 Monthly Lowest -3.9°C Total Sun 36 hrs

High pressure dominated the weather for much of the month bringing dry, but often rather cloudy, weather. On the 6th, over 11mm of rain fell, but days with rain were infrequent during December. It was very mild mid month with a high on the 14th above 13°C., but it was colder for a while during the last week with some sharp frosts. On the 29th, after an overnight minimum near minus 4°C., the maximum temperature during the day only reached 2.2°C.
 





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