November 2010
Autumn colour in the Otter Valley, Devon.
Autumn colour in the Otter Valley, Devon.
Summary for  November 2010
Mean Max: 9.7ºC (-1.7ºC)
Mean Min: 3.1ºC (-1.9ºC)
Mean: 6.4ºC (-1.6ºC)
     
High Max: 18.1ºC 4th
Low Max: -0.9ºC 28th
High Min: 14.8ºC 5th
Low Min: -4.9ºC 26th
Mean Grass Min: 0.5ºC  
Grass Min: -6.6ºC 29th
     
Rain Total (gauge): 101.5 mm (162%)
Rain Total (tipping bucket): 88.4 mm (142%)
Rain Days >0.2 mm: 20 Days  
Rain Days >1.0 mm: 11 Days  
Max 24 hrs: 37.2 mm 17th
Days without any rain: 10  
     
Air Frost: 9 Days  
Ground Frost: 7 Days  
Snow Falling: 0 Days  
Snow (50%) @ 9am: 0 Days  
Thunder Heard: 0 Days  
Hail <5 mm: 0 Days  
Hail >5 mm: 0 Days  
Fog @ 9am: 1 Day 1st 
     
Total Monthly Sunshine: 107h:31m  
Total Monthly Sunshine: 107.5 Hours  
Most Sunshine in a Day: 08h:40m 10th
Average Daily Sunshine: 03h:35m  
Sunless Days: 1 Days  
Cloudless Days: 5 Days  
Total Possible Sunshine: 269h:21m  
Percentage of Total Sun: 40%  
     
Mean Soil Temp @ 30 cm:    
Min Soil Temp @ 30 cm:    
Max Soil Temp @ 30 cm: 12.3ºC 5th
Mean Soil Temp @ 100 cm:    
Min Soil Temp @ 100 cm:    
Max Soil Temp @ 100 cm: 11.8ºC 5th
     
Mean 10 Min Wind >39 mph: 0.00 Days  
N: 7.40 Days  
NE: 2.19 Days  
E: 2.20 Days  
SE: 1.71 Days  
S: 2.61 Days  
SW: 2.89 Days  
W: 3.32 Days  
NW: 2.51 Days  
Calm: 6.18 Days  
Mean Wind: 3.9 mph  
Max Gust: 40 mph 17th
     
Mean Cloud Cover: 68%  
Mean RH @ 9am: 85%  
Rain Duration >0.1mm/hour: 44.5 Hours  
Frost Duration: 112.8 Hours  
Max Frost Duration in a Day: 24.0 Hours 28th
     
Mean Sea Temperature: 12.3ºC  
Normal for Month:    
Max Sea Temperature: 13.8ºC 6th
Min Sea Temperature: 10.0ºC 29th
     
Mean Pressure @ 9am:    
Mean Pressure: 1005.9 hPa (-9.8 hPa)
Max Pressure: 1021.4 hPa 16th
Min Pressure: 963.0 hPa 9th
     
Max Dewpoint: 14.1ºC 5th
Min Dewpoint: -7.4ºC 28th
Mean Dewpoint: 3.4ºC  
     
Max Humidity: 93% 18th
Min Humidity: 54% 10th
Mean Humidity: 84% (-2)

 

After a very warm start things started to cool down and the month ended extremely cold with hard overnight frosts.

Despite a warm start, the temperatures ended up rather below normal due to the severity of the cold spell that started on the 21st and continued to the end of the month.
The month started and ended dry but was wet around mid-month. There was a very wet day on the 17th with 45.8 mm of rain.
There were plenty of cold, frosty nights from the 24th onwards. Conversely, the night of the 5th was the warmest for November on record with a minimum of just 14.8°C.
Sunshine amounts were generally above normal with the sun being fairly evenly spread throughout the month.
Soil temperatures were around normal through most of the month but ended up rather below average due to a few cold nights during the final week.
Winds were dominant from a northerly direction.
Rainfall duration was only 44.5 hours despite being quite a wet month.
Sea temperatures fell gradually throughout the month and ended up being rather below normal due to the cold nights and days at the end of the month.
Mean pressure was well below average.
Dewpoints were below average.
The RH ended up being a little below normal.
Weather Data for Otter Valley, Devon.  November 2010  
  Temp (oC) Hum (RH%) Dewpoint (oC) Wind (mph) Rain Pressure (hPa) Grass Sun  
  Min Max Ave Min Max Ave Min Max Ave Max Ave Run mm Min Max Ave Min Hours Observations
1 3.4 13.6 8.5 84 92 88 1.5 11.4 6.5 0 0.0 0 0.0 1008 1017 1012 2.5 6.1 Foggy am, then sunny
2 11.0 15.2 13.1 90 92 91 1.8 10.9 6.4 0 0.0 0 1.1 1015 1017 1016 9.1 3.5 Sunny intervals all day
3 11.4 16.1 13.8 85 88 87 12.2 12.9 12.6 0 0.0 0 0.4 1013 1015 1014 8.8 1.2 Sunny ints am, cloudy pm
4 13.6 18.1 15.9 79 85 82 10.4 13.2 11.8 0 0.0 0 0.0 1016 1018 1017 11.0 2.8 Sunny intervals all day
5 14.8 17.5 16.2 84 90 87 12.7 14.1 13.4 0 0.0 0 0.7 1018 1019 1018 10.2 1.2 Brief sunny intervals all day
6 5.8 15.1 10.5 72 91 82 6.9 8.7 7.8 0 0.0 0 2.9 1014 1016 1015 7.1 6.1 Sunny intervals all day
7 2.9 9.0 6.0 71 90 81 0.4 4.2 2.3 11 0.2 5 1.5 999 1008 1004 0.0 5.9 Sunny intervals all day
8 6.3 11.0 8.7 75 91 83 1.1 7.2 4.2 35 3.1 67 13.4 964 999 981 0.0 3.7 Sunny intervals all day
9 6.1 7.9 7.0 79 90 85 2.6 5.4 4.0 0 0.0 0 4.2 963 987 975 0.0 0.3 Rain am, bright pm
10 1.0 8.7 4.9 54 88 71 -2.7 2.9 0.1 0 0.0 0 0.0 988 1005 996 0.0 8.7 Sunny all day
11 0.2 14.4 7.3 63 92 78 -2.7 11.9 4.6 0 0.0 0 5.7 986 1004 995 0.0 2.7 Rain am, sun & showers pm
12 9.8 13.8 11.8 73 92 83 5.5 11.7 8.6 0 0.0 0 7.9 991 997 994 0.0 0.0 Rain intermittent all day
13 6.6 11.7 9.2 84 89 87 4.2 9.5 6.9 11 0.2 6 0.7 991 995 993 0.0 0.5 Cloudy am, sunny ints pm
14 1.8 7.9 4.9 87 91 89 0.0 5.8 2.9 14 1.0 24 3.1 991 1003 997 0.0 0.3 Cloudy am, rain pm
15 -0.8 10.8 5.0 81 92 87 -2.8 7.5 2.4 5 0.4 10 0.0 1003 1018 1011 0.0 8.4 Sunny all day
16 -1.9 11.1 4.6 75 92 84 -3.7 8.3 2.3 31 3.0 73 0.0 1010 1021 1016 0.0 7.2 Sunny all day
17 2.9 11.1 7.0 76 92 84 1.8 9.1 5.5 40 10.4 250 37.2 999 1010 1004 0.0 3.1 Heavy rain am, very windy
18 0.8 11.0 5.9 87 93 90 0.7 9.2 5.0 13 1.2 30 0.9 1000 1006 1003 0.0 5.1 Sunny ints all day
19 0.3 11.4 5.9 86 93 90 -1.8 9.5 3.9 12 1.7 41 2.0 1007 1010 1008 0.0 4.3 Sunny ints all day
20 8.8 10.6 9.7 86 92 89 4.5 8.3 6.4 19 5.9 167 5.3 1008 1012 1010 0.0 1.9 Sunny ints am, cloudy pm
21 3.4 8.0 5.7 80 88 84 0.6 4.4 2.5 17 5.2 118 0.0 1011 1013 1012 0.0 0.5 Sunny ints am, cloudy pm
22 4.4 6.9 5.7 83 88 86 0.6 4.0 2.3 14 3.8 92 0.0 1009 1011 1010 0.0 3.4 Sunny ints am, cloudy pm
23 2.5 8.6 5.6 78 89 84 0.1 4.7 2.4 11 2.2 53 0.0 1010 1014 1012 0.5 3.4 Sunny intervals all day
24 -0.1 6.2 3.1 87 91 89 -2.3 4.0 0.9 7 0.7 15 0.2 1010 1014 1012 -1.0 1.8 Cloudy am, sunny ints pm
25 -3.5 4.1 0.3 69 91 80 -5.4 -0.5 -3.0 17 2.8 68 0.2 1010 1012 1011 -5.3 7.9 Sunny all day
26 -4.9 4.9 0.0 77 91 84 -7.3 1.9 -2.7 13 1.0 24 0.4 1003 1013 1008 -6.5 5.1 Sunny am, cloudy pm
27 -2.6 1.2 -0.7 77 89 83 -4.8 -1.4 -3.1 22 6.1 146 0.4 1002 1005 1004 -4.3 2.1 Sunny ints am, cloudy pm
28 -4.2 -0.9 -2.6 74 83 79 -7.4 -5.0 -6.2 19 4.1 98 0.0 1004 1007 1006 -6.2 3.1 Brief sunny intervals all day
29 -3.4 2.7 -0.4 68 85 77 -6.5 -2.5 -4.5 22 4.8 116 0.0 1007 1014 1011 -6.6 7.0 Sunny all day
30 -2.1 1.9 -0.1 76 87 82 -4.9 -1.0 -3.0 29 6.6 158 0.2 1010 1014 1012 -5.3 0.4 Brief sunny intervals all day
3.1 9.7 6.6 78 90 84 0.5 6.3 3.4 18 3.2 1557 88.4 1002 1010 1006 1.0 107.5  

Graphs for November 2010
Figure 1. Temperature and Rainfall for November 2010.
Figure 2. Sunshine, air pressure and mean wind speed for November 2010.
Figure 3. Wind direction for November 2010.
Figure 4. Soil & sea surface temperature (SST) for Lyme Bay for November 2010. Note missing data from the 6th to the 23rd for soil temperatures.