WEATHER ANALYSES FOR 2014

2014 was the joint 9th warmest year on record in Northampton, in contrast with the UK as a whole where 2014 was the warmest year on record.

A notable feature of the year was the relative lack of frost and snow. Snow only fell on 4 days in 2014, and was never recorded as lying on the ground at 9 o'clock in the morning. This compares to 32 days in 2013 when snow fell, and 28 days when it was lying on the ground in the morning. Only 19 days recorded an air frost in 2014, compared to 59 days in 2013. In fact, the coldest it got was -2C on 21st January. However, 2013 was much colder overall than average and with the coldest spring for 50 years.

Rainfall for the year stands at 702.3mm, just a little above what we would normally expect.

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MONTHLY WEATHER REVIEWS AND CLIMATOLOGICAL SUMMARIES

January

Headline:  A similar pattern to December 2013 – mild, windy and very wet. The wettest January locally since 1939.

February

Headline: Mild, wet and very windy with gusts exceeding 50mph on 5 days.

March

Headline: Calmer and more benign than February. Rainfall below average and temperatures slightly above.

April

Headline: The usual April showers, but with a marked dry spell mid month. Unseasonably mild.

May

Headline: Generally wet, apart from a brief warm and dry spell during the third week.

June

Headline: Unsettled at the start and finish, but generally rather warm and dry with prolonged spells of sunshine.

July

Headline: Warm throughout and hot at times during the second half. Showers, some heavy at times, but with a prolonged dry spell during the second half.

August

Headline: A disappointing summer month following June and July. Cool, wet and windy at times.

September

Headline:  Driest September locally since 1959 with temperatures above average.

October

Headline: Very mild, culminating in warmest Hallowe’en on record. Windy at times.

November

Headline: Generally dull, grey and damp with several days of heavy rain. Nearly half the month lacked any sunshine.

December

Headline: Unsettled and windy at times.  Temperatures above average for the most part, turning cold from Christmas onwards

CLIMATOLOGICAL STATISTICS FOR 2014

Air Temperatures:     
The Highest Maximum: 28.5 C on 18th July
The Lowest Maximum: 3.2 C on 27th of December
The Highest Minimum: 17.0 C on 19th July
The Lowest Minimum: -2.0 C on 21st January
The Mean Maximum: 14.9 C   
The Mean Minimum: 7.3 C   
The Overall Mean: 11.1 C   
Difference from the Yearly Mean:  +0.6 C   
Solar Radiation:     
Maximum (at 0900): 867.0 W/m^2 on 22nd May
Mean (at 0900): 182.5 W/m^2   
     
Relative Humidity:     
Highest Relative Humidity (at 0900): 100& on 21st January; 1st & 3rd March; 10th August; 16th November
Lowest Relative Humidity (at 0900): 53.8 % on 13th June
Mean Relative Humidity (at 0900): 85.2 %   
     
Dew Point:     
The Highest Dew Point (0900): 18.4 C on 19th July
The Lowest Dew Point (at 0900): -1.1 C on 29th of December
The Mean Dew Point (at 0900): 8.1 C   
     
Rainfall:     
Total: 702.3 mm   
Percentage of the Yearly Mean: 106.6 %   
Duration: 553.3 hrs   
Highest 24 hour fall (0900 to 0900): 26.9 mm on 25th August
Rain Days (>/=0.2mm): 178    
Wet Days (>/=1.0mm): 127    
     
Sunshine:     
Total Duration of Bright Sunshine: 1345.1 hrs   
Sunniest day: 12.4 hrs on 12th June
No. of days without sunshine: 59    
Percentage of the Yearly Mean: 96.6 %   
Cloud cover (mean at 0900): 5.4 oktas   
     
Pressure (reduced to sea level):     
The Highest Pressure (at 0900): 1041.9 mb on 29th of December
The Lowest Pressure (at 0900): 976.3 mb on 8th February
Mean Pressure (at 0900): 1012.8 mb   
     
Winds     
Run of wind (mean over 24 hrs): 117.6 miles   
Mean daily wind speed: 6.4 mph   
Run of wind (cumulative): 42760 miles   
Highest Maximum Gust: 62 mph on 8th February
No. of gusts of 50mph or more: 7    
Highest wind strength (at 0900): 28 mph on 21st October
Mean wind strength (at 0900): 7.7
     

Winds from the Following Directions:     

N 32 NE 32 E 33 SE 48 S 86 SW 48 W 37 NW 55 Calm 9

     
Concrete     
Lowest Concrete Minimum: -4.5 C on 30th of December
Mean Concrete Minimum: 6.9 C   
     
Evaporation     
Piche 807.8 ml   
     
Days with:     
Thunder: 12    
Hail <5mm: 5    
Hail >/=5mm: 0    
Snow or snow & rain: 4    
Snow lying: 0    
Fog: 20    
Air Frost: 19    
Duration of Air Frost: 58.9 hrs   
Gales: 1    
     
     
Wettest month: 112.8 mm in  January
Driest month: 8.5 mm in  September
Warmest month: 18.4 C in  July
Coolest month: 5.5 C in  January
Sunniest month: 212.1 hrs in  July
Dullest month: 30.0 hrs in  November
Windiest month: 11.5 mph in  February
Calmest month: 3.7 mph in  June