Monthly Weather Data Derbyshire Lane Sheffield South Yorkshire Dec 2009 
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  Max Temp Min Temp Dry Bulb Wet Bulb Grass Min Soil Temp Barometer  Rain Humidity Max Gust Average Force Win Dir
Day Deg F Deg F Deg F Deg F Deg F Deg F Inches MM Percent MPH MPH Beaufort  
1 41.7 29.5 31.1 31.1 20.3 43.9 29.84 4.4 100 30 2 1 S Sunny Spells Cloudy later Cold
2 44.6 30.0 42.1 41.9 21.4 42.8 29.51 1.1 98 31 9 3 SSW Milder Sunny Spells late light Showers
3 43.5 39.9 43.7 43.0 30.4 43.2 29.32 0.0 94 19 5 2 SW Sunny Spells Light Showers Breezy at times
4 44.0 37.9 39.2 37.4 30.4 43.2 29.65 5.7 83 39 10 3 WNW Sunny Spells 
5 52.0 38.0 43.9 43.5 30.9 43.0 29.41 15.3 97 26 8 3 SSW Sunny Spells
6 48.2 42.1 47.3 46.2 38.5 43.3 29.19 0.2 92 39 12 3 SSW Rain early Sunny spells later
7 48.4 41.1 44.6 42.6 36.5 44.2 29.45 1.7 84 42 12 3 SSW Sunny Spells then light rain later
8 49.1 38.0 45.1 43.9 30.9 44.2 29.50 0.5 90 34 6 2 SW Sunny Spells Odd spot of rain
9 49.1 43.3 46.6 44.8 36.5 44.2 29.94 4.8 86 25 12 3 SSW Sunny Spells Mild
10 48.0 43.1 46.0 44.4 36.5 44.2 30.15 0.0 87 28 5 2 WNW Sunny Spells Mild
11 41.0 31.0 32.2 32.0 22.8 43.7 30.49 0.0 98 26 5 2 SW Misty Cold
12 43.2 31.1 40.1 39.7 22.8 42.8 30.49 0.0 97 13 5 2 NNE Dull Misty cool by day Sunny Afternoon
13 42.8 36.0 38.5 37.6 30.7 42.4 30.39 1.1 88 14 5 2 NNE Sunny Spells Cool
14 41.0 36.1 40.1 39.2 31.1 42.4 30.19 7.5 92 21 1 1 NNW Light rain at Times
15 40.1 37.8 39.0 38.3 38.5 42.4 30.04 0.7 93 15 3 1 ESE Dull drizzle at times cold
16 40.8 35.0 40.5 39.9 31.8 42.8 29.90 3.0 95 13 8 3 NNW Light Rain at Times
17 35.8 33.8 34.9 34.5 30.4 42.8 29.89 0.3 96 21 8 3 NNE Overnight Rain then Sharp Snow Showers Afternoon
18 31.1 25.9 28.4 28.2 23.2 42.3 30.01 0.0 99 38 13 4 NNE Dry Sunny Spells Very Cold
19 34.9 24.9 28.4 28.2 16.3 40.6 29.89 0.2 99 26 5 2 SSE Very cold Sunny Spells Light Snow Showers Late afternoon
20 33.3 25.0 28.9 28.9 17.8 39.6 29.95 3.8 100 25 7 2 WNW Overnight Rain Sleet and Snow Showers very cold
21 34.3 26.9 31.8 31.1 21.2 39.2 29.93 0.0 100 33 7 2 SSW Sunny Spells very cold
22 34.3 21.2 26.6 26.4 23.7 38.8 29.01 2.8 100 23 9 3 SSW Sunny spells snow showers during afternoon
23 34.9 24.0 33.8 32.4 24.1 38.7 29.14 4.2 85 32 18 4 SW Less cold overnight due to strong winds. Sunny spells very cold
24 34.7 27.2 32.7 32.4 23.2 38.5 29.98 0.9 96 32 0 0 CALM Overnight Snow Very cold slow Thaw
25 38.8 30.9 33.8 32.9 29.1 38.1 29.35 0.7 90 19 8 3 W Sunny Spells Very Cold
26 42.1 32.3 39.2 38.7 28.4 38.1 29.47 0.4 95 29 9 3 SSW Sunny Spells Cool Overnight Rain
27 39.2 36.0 38.3 37.4 31.1 38.1 29.34 0.2 91 36 8 3 SSW Sunny Spells Cool Light Showers
28 35.6 29.0 30.2 30.0 20.3 38.1 29.69 0.0 97 41 0 0 CALM Sunny Spells Very Cold
29 36.7 28.9 33.8 33.6 21.9 37.8 29.54 9.8 98 11 3 1 NNE Misty Very Cold
30 36.5 33.1 36.3 35.6 32.4 37.8 29.40 3.0 96 24 11 3 ENE Light Rain ,Sleet and Snow
31 37.6 31.8 33.8 31.8 29.1 37.8 29.60 0.0 80 35 9 3 NNE Dry Cold Sunny Spells
   
Total 1215.6 991.3     841.9 1235.1   67.9 2796.0 810.0 221.0 71.0  
Ave 40.6 32.9     27.8 41.3   2.3 93.4 27.1 7.2 2.3
74.2%
N 0.0
NNE 6.0 Number of Air Frosts 15
NE 0.0 Number of Ground Frosts 25
ENE 1.0 Days of measurable Rain 23
E 0.0 Days of rain greater than 10 mm 1
ESE 1.0 Days when gusts exceeded 50 mph 0
SE 0.0 Days when average Max exceeded 6
SSE 1.0 Days below average max 25
S 1.0 Days above average min 9
SSW 9.0 Days below average min 22
SW 4.0
WSW 0.0
W 1.0
WNW 3.0
NW 0.0
NNW 2.0