Weather History for Decatur, IL

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Month of January, 2015

  Max Avg Min Sum
Temperature  
Max Temperature 49 °F 34 °F 16 °F
Mean Temperature 42 °F 26 °F 7 °F
Min Temperature 35 °F 18 °F -6 °F
Degree Days  
Heating Degree Days (base 65) 58 39 23 971
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 38 °F 20 °F -11 °F
Precipitation  
Precipitation 0.53 in 0.04 in 0.00 in 0.86 in
Snowdepth - - - -
Wind  
Wind 31 mph 10 mph 0 mph
Gust Wind 40 mph 26 mph 20 mph
Sea Level Pressure  
Sea Level Pressure 30.92 in 30.21 in 29.61 in

Monthly Weather History Graph

Monthly Weather History Graph

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Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Jan. 29, 2015 Rise Set
Actual Time 7:06 AM CST 5:11 PM CST
Civil Twilight 6:37 AM CST 5:39 PM CST
Nautical Twilight 6:05 AM CST 6:12 PM CST
Astronomical Twilight 5:33 AM CST 6:44 PM CST
Moon 12:59 PM CST (1/29) 2:38 AM CST (1/29)
Length of Visible Light 11h 02m
Length of Day
10h 04m
Waxing Gibbous, 76% of the Moon is Illuminated
Jan 29
Waxing Gibbous
Feb 3
Full
Feb 11
Last Quarter
Feb 18
New
Feb 25
First Quarter

Weather History Calendar

Precipitation to date: 0.86 Normal to Date: 0.73 Normal Month Total: 1.74
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
33 | 18 0.00
Average:
36 | 20 0.08
Snow
Actual:
39 | 24 0.03
Average:
36 | 20 0.08
Rain
Actual:
40 | 34 0.53
Average:
36 | 20 0.08
Snow
Actual:
35 | 10 0.01
Average:
36 | 20 0.07
Snow
Actual:
17 | 4 T
Average:
36 | 20 0.08
Partly Cloudy
Actual:
19 | 12 T
Average:
35 | 20 0.07
Snow
Actual:
16 | -3 T
Average:
35 | 20 0.06
Snow
Actual:
27 | -6 T
Average:
35 | 19 0.07
Snow
Actual:
18 | 2 T
Average:
35 | 19 0.06
Partly Cloudy
Actual:
26 | 1 0.00
Average:
35 | 19 0.06
Rain
Actual:
35 | 26 0.23
Average:
35 | 19 0.06
Snow
Actual:
33 | 10 0.01
Average:
35 | 19 0.05
Scattered Clouds
Actual:
22 | 6 0.00
Average:
35 | 19 0.05
Partly Cloudy
Actual:
22 | 4 0.00
Average:
35 | 19 0.06
Clear
Actual:
40 | 12 0.00
Average:
35 | 19 0.05
Clear
Actual:
43 | 25 0.00
Average:
35 | 19 0.07
Scattered Clouds
Actual:
49 | 34 0.00
Average:
35 | 19 0.07
Scattered Clouds
Actual:
47 | 25 0.00
Average:
35 | 19 0.05
Scattered Clouds
Actual:
48 | 23 0.00
Average:
35 | 19 0.05
Partly Cloudy
Actual:
47 | 30 0.00
Average:
35 | 19 0.04
Mostly Cloudy
Actual:
39 | 31 0.00
Average:
35 | 19 0.05
Overcast
Actual:
36 | 32 0.00
Average:
35 | 19 0.04
Partly Cloudy
Actual:
35 | 25 0.00
Average:
35 | 19 0.04
Clear
Actual:
47 | 26 0.00
Average:
35 | 19 0.05
Rain
Actual:
41 | 35 0.05
Average:
35 | 19 0.04
Clear
Actual:
- | - 0.00
Average:
32 | 17 0.03
Partly Cloudy
Forecast:
37 | 25
Average:
35 | 20 0.04
Partly Cloudy
Forecast:
43 | 35
Average:
35 | 20 0.04
Mostly Cloudy
Forecast:
40 | 27
Average:
35 | 20 0.04
Partly Cloudy
Forecast:
35 | 23
Average:
35 | 20 0.04
Partly Cloudy
Forecast:
36 | 18
Average:
36 | 20 0.05
 

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

2015 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Jan high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 33 26 18 19 14 10 75 59 43 30.32 30.21 30.14 10 10 10 24 12 30 0.00  
2 39 32 24 33 26 18 100 76 52 30.35 30.25 30.12 10 9 2 13 6 15 0.03 Snow
3 40 37 34 38 35 33 100 96 92 30.11 29.87 29.74 10 3 0 13 5 16 0.53 Fog , Rain
4 35 23 10 34 19 1 100 83 66 30.64 30.15 29.75 10 5 1 28 15 38 0.01 Snow
5 17 11 4 13 6 -5 92 77 61 30.76 30.54 30.28 10 5 0 20 9 25 T Fog , Snow
6 19 16 12 15 9 5 92 80 67 30.49 30.40 30.26 10 10 9 22 9 30 T  
7 16 7 -3 9 -3 -11 76 68 59 30.92 30.69 30.40 10 8 2 28 18 37 T Snow
8 27 11 -6 16 2 -11 82 66 50 30.81 30.30 30.02 10 9 2 31 17 40 T Snow
9 18 10 2 8 1 -5 73 64 55 30.58 30.39 30.17 10 9 2 26 15 37 T Snow
10 26 14 1 13 5 -4 87 67 46 30.57 30.46 30.34 10 10 10 23 13 29 0.00  
11 35 31 26 32 27 14 96 74 51 30.36 30.28 30.23 10 6 2 17 9 22 0.23 Rain
12 33 22 10 32 20 4 96 82 67 30.67 30.42 30.22 10 7 2 24 13 27 0.01 Snow
13 22 14 6 13 7 3 88 78 68 30.71 30.62 30.48 10 10 7 17 10 21 0.00  
14 22 13 4 15 8 0 88 78 67 30.47 30.39 30.26 10 8 5 7 2 9 0.00  
15 40 26 12 27 21 12 88 71 54 30.25 30.16 30.10 10 9 4 17 10 21 0.00  
16 43 34 25 33 28 23 92 79 65 30.23 30.15 30.04 10 9 4 15 7 20 0.00  
17 49 42 34 37 33 30 89 75 60 30.01 29.85 29.72 10 10 8 22 14 31 0.00  
18 47 36 25 32 30 26 92 73 53 30.04 29.95 29.83 10 10 10 21 11 27 0.00  
19 48 36 23 37 30 23 92 76 60 30.04 29.98 29.90 10 10 9 13 4 14 0.00  
20 47 39 30 37 33 28 92 81 70 30.04 29.97 29.87 10 10 6 15 6 20 0.00  
21 39 35 31 32 30 28 96 83 70 30.30 30.14 30.00 10 9 4 18 11 25 0.00  
22 36 34 32 32 30 28 96 86 75 30.48 30.41 30.30 10 5 1 13 3 16 0.00  
23 35 30 25 27 25 22 92 81 69 30.39 30.16 29.93 10 10 8 13 4 18 0.00  
24 47 37 26 36 30 23 85 75 65 29.89 29.79 29.68 10 10 5 16 10 21 0.00  
25 41 38 35 38 33 27 100 90 79 29.99 29.72 29.61 10 8 2 26 10 34 0.05 Rain
26 - - - - - - - - - - - - - - - - - - 0.00