Weather History for Savanna, IL

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Month of December, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 12 °C 4 °C -3 °C
Mean Temperature 8 °C 1 °C -7 °C
Min Temperature 4 °C -3 °C -12 °C
Degree Days  
Heating Degree Days (base 65) 46 31 19 970
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 11 °C -2 °C -16 °C
Precipitation  
Precipitation 19.8 mm 1.4 mm 0.0 mm 44.18 mm
Snowdepth - - - -
Wind  
Wind 42 km/h 11 km/h 0 km/h
Gust Wind 55 km/h 31 km/h 26 km/h
Sea Level Pressure  
Sea Level Pressure 1033 hPa 1019 hPa 997 hPa

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 12, 2011 Rise Set
Actual Time 7:19 AM CST 4:28 PM CST
Civil Twilight 6:47 AM CST 5:00 PM CST
Nautical Twilight 6:12 AM CST 5:35 PM CST
Astronomical Twilight 5:38 AM CST 6:09 PM CST
Moon 6:40 PM CST (12/12) 8:50 AM CST (12/12)
Length of Visible Light 10h 13m
Length of Day
9h 09m
Waning Gibbous, 95% of the Moon is Illuminated
Dec 12
Waning Gibbous
Dec 17
Last Quarter
Dec 24
New
Jan 1
First Quarter
Jan 9
Full

Weather History Calendar

 
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Scattered Clouds
Actual:
5 | -2 0.00
Average:
- | - -
Scattered Clouds
Actual:
3 | -6 0.00
Average:
- | - -
Rain
Actual:
9 | 1 19.81
Average:
- | - -
Rain
Actual:
11 | 1 2.79
Average:
- | - -
Overcast
Actual:
1 | -1 0.00
Average:
- | - -
Snow
Actual:
0 | -1 0.00
Average:
- | - -
Partly Cloudy
Actual:
-1 | -7 0.00
Average:
- | - -
Partly Cloudy
Actual:
1 | -3 0.00
Average:
- | - -
Snow
Actual:
-3 | -6 0.00
Average:
- | - -
Scattered Clouds
Actual:
-3 | -12 0.00
Average:
- | - -
Clear
Actual:
6 | -6 0.00
Average:
- | - -
Mostly Cloudy
Actual:
7 | -1 0.00
Average:
- | - -
Overcast
Actual:
7 | 2 0.00
Average:
- | - -
Thunderstorm
Actual:
11 | 4 14.48
Average:
- | - -
Mostly Cloudy
Actual:
12 | -1 0.25
Average:
- | - -
Scattered Clouds
Actual:
1 | -6 0.00
Average:
- | - -
Snow
Actual:
1 | -2 0.25
Average:
- | - -
Scattered Clouds
Actual:
9 | -6 0.00
Average:
- | - -
Scattered Clouds
Actual:
8 | 1 0.00
Average:
- | - -
Snow
Actual:
3 | 0 0.00
Average:
- | - -
Rain
Actual:
4 | 0 0.00
Average:
- | - -
Mostly Cloudy
Actual:
2 | -2 0.00
Average:
- | - -
Partly Cloudy
Actual:
-1 | -8 0.00
Average:
- | - -
Clear
Actual:
5 | -8 0.00
Average:
- | - -
Clear
Actual:
7 | 0 0.00
Average:
- | - -
Scattered Clouds
Actual:
7 | -6 0.00
Average:
- | - -
Partly Cloudy
Actual:
4 | -1 0.00
Average:
- | - -
Partly Cloudy
Actual:
1 | -6 0.00
Average:
- | - -
Scattered Clouds
Actual:
9 | -1 0.00
Average:
- | - -
Rain
Actual:
4 | 1 6.60
Average:
- | - -
Fog
Actual:
6 | 0 0.00
Average:
- | - -
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

Daily Weather History & Observations

2011 Temp. (°C) Dew Point (°C) Humidity (%) Sea Level Press. (hPa) Visibility (km) Wind (km/h) Precip. (mm) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 5 1 -2 -1 -4 -5 86 69 48 1026 1023 1021 16 16 16 19 6 - 0.00  
2 3 -1 -6 -1 -3 -6 96 84 68 1031 1029 1026 16 15 2 16 8 - 0.00  
3 9 5 1 8 5 0 97 92 86 1024 1020 1011 16 6 1 29 13 42 19.81 Rain
4 11 6 1 9 2 -2 95 86 78 1025 1017 1008 16 14 5 35 19 47 2.79 Rain
5 1 0 -1 -1 -2 -3 91 84 77 1028 1026 1025 16 12 6 26 13 34 0.00  
6 0 -1 -1 -3 -5 -7 82 72 61 1027 1025 1022 16 16 6 21 11 - 0.00 Snow
7 -1 -4 -7 -3 -7 -9 87 75 61 1021 1019 1016 16 15 8 24 14 29 0.00  
8 1 -1 -3 -3 -5 -6 84 75 62 1024 1022 1020 16 15 11 23 6 - 0.00  
9 -3 -4 -6 -6 -11 -16 88 61 39 1029 1026 1023 16 15 5 21 11 29 0.00 Snow
10 -3 -7 -12 -7 -13 -15 78 64 42 1033 1032 1030 16 16 16 21 11 27 0.00  
11 6 0 -6 -1 -4 -7 97 82 58 1029 1027 1026 16 11 4 21 13 - 0.00  
12 7 3 -1 -1 -2 -2 93 78 54 1028 1027 1026 16 13 6 16 11 - 0.00  
13 7 4 2 2 0 -2 84 75 65 1029 1027 1025 16 15 11 13 3 - 0.00  
14 11 8 4 11 7 4 97 96 94 1021 1012 1004 11 5 1 26 13 34 14.48 Rain , Thunderstorm
15 12 6 -1 11 -1 -5 88 75 61 1026 1014 1003 16 16 8 42 23 55 0.25  
16 1 -2 -6 -4 -6 -8 85 73 60 1030 1028 1026 16 16 16 21 10 - 0.00  
17 1 -1 -2 -1 -2 -3 97 90 82 1027 1024 1022 16 9 2 11 5 - 0.25 Snow
18 9 2 -6 2 -1 -7 98 83 58 1023 1017 1011 16 11 2 26 10 - 0.00  
19 8 5 1 2 1 -1 87 77 62 1022 1014 1010 16 16 16 26 13 35 0.00  
20 3 2 0 1 -1 -2 97 85 75 1022 1016 1008 16 13 2 13 8 - 0.00 Rain , Snow
21 4 2 0 2 1 -1 99 94 81 1013 1008 1005 16 7 1 14 5 - 0.00 Rain
22 2 1 -2 1 -1 -7 99 85 64 1025 1020 1013 16 11 4 24 8 35 0.00  
23 -1 -4 -8 -4 -7 -9 94 78 65 1028 1026 1022 16 16 16 24 10 29 0.00  
24 5 -2 -8 -2 -5 -9 94 77 56 1026 1024 1022 16 16 11 21 8 27 0.00  
25 7 3 0 -2 -3 -3 78 65 46 1026 1022 1018 16 16 16 23 11 29 0.00  
26 7 1 -6 -1 -4 -7 97 76 48 1026 1021 1015 16 16 16 26 8 40 0.00  
27 4 2 -1 0 -2 -6 94 75 53 1015 1008 1004 16 16 16 32 13 53 0.00  
28 1 -2 -6 -2 -6 -8 94 77 60 1018 1014 1008 16 16 11 19 8 - 0.00  
29 9 4 -1 0 -1 -2 94 77 53 1007 1003 1000 16 15 11 26 11 35 0.00  
30 4 2 1 4 2 0 96 92 87 1010 1002 997 16 9 2 27 13 35 6.60 Rain
31 6 3 0 4 2 0 98 92 81 1014 1009 1000 16 8 0 34 11 45 0.00 Fog