Weather History for Alton, IL

Change the Weather History Date:

Wednesday, April 17, 2013

  Actual Average Record
Temperature  
Mean Temperature 64 °F -  
Max Temperature 81 °F 64 °F 87 °F (2002)
Min Temperature 49 °F 46 °F 28 °F (1997)
Degree Days  
Heating Degree Days 2    
Growing Degree Days 14 (Base 50)    
Moisture  
Dew Point 51 °F    
Average Humidity 80    
Maximum Humidity 94    
Minimum Humidity 57    
Precipitation  
Precipitation 0.20 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.00 in    
Wind  
Wind Speed 8 mph (East)    
Max Wind Speed 23 mph    
Max Gust Speed 34 mph    
Visibility 7 miles    
Events      
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

Search for Another Location

Airport:

Trip Planner

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

Apr. 17, 2013 Rise Set
Actual Time 6:20 AM CDT 7:39 PM CDT
Civil Twilight 5:52 AM CDT 8:07 PM CDT
Nautical Twilight 5:19 AM CDT 8:40 PM CDT
Astronomical Twilight 4:44 AM CDT 9:15 PM CDT
Moon 11:35 AM CDT (4/17) 1:16 AM CDT (4/17)
Length of Visible Light 14h 14m
Length of Day
13h 18m
Waxing Crescent, 42% of the Moon is Illuminated
Apr 17
Waxing Crescent
Apr 18
First Quarter
Apr 25
Full
May 2
Last Quarter
May 9
New

Hourly Weather History & Observations

Time (CDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 50.0 °F 44.1 °F 80% 30.14 in 10.0 mi NE 4.6 mph - 0.01 in   Overcast
12:35 AM 50.0 °F 44.1 °F 80% 30.12 in 10.0 mi ENE 8.1 mph - 0.02 in   Overcast
12:55 AM 50.2 °F 44.6 °F 81% 30.13 in 10.0 mi NE 4.6 mph - 0.03 in   Overcast
1:15 AM 50.2 °F 44.6 °F 81% 30.12 in 10.0 mi NE 4.6 mph - 0.01 in   Overcast
1:35 AM 50.2 °F 44.6 °F 81% 30.12 in 10.0 mi NE 3.5 mph - 0.02 in   Overcast
1:55 AM 50.2 °F 44.6 °F 81% 30.11 in 10.0 mi ENE 4.6 mph - 0.03 in   Overcast
2:15 AM 50.2 °F 44.6 °F 81% 30.12 in 10.0 mi NE 3.5 mph - N/A   Overcast
2:35 AM 50.2 °F 44.6 °F 81% 30.11 in 10.0 mi NE 6.9 mph - 0.01 in   Overcast
2:55 AM 50.2 °F 44.8 °F 82% 30.11 in 10.0 mi ENE 5.8 mph - 0.02 in   Overcast
3:15 AM 50.4 °F 45.0 °F 82% 30.11 in 10.0 mi NE 3.5 mph - 0.01 in   Overcast
3:35 AM 50.2 °F 45.3 °F 83% 30.11 in 10.0 mi NE 6.9 mph - 0.02 in   Overcast
3:55 AM 50.2 °F 45.3 °F 83% 30.11 in 10.0 mi NNE 3.5 mph - 0.03 in   Overcast
4:15 AM 50.0 °F 45.3 °F 84% 30.10 in 7.0 mi ENE 5.8 mph - 0.01 in   Overcast
4:35 AM 49.6 °F 45.5 °F 86% 30.10 in 7.0 mi NE 3.5 mph - 0.01 in   Overcast
4:55 AM 49.5 °F 45.5 °F 86% 30.10 in 7.0 mi NE 4.6 mph - 0.02 in   Overcast
5:15 AM 49.3 °F 45.7 °F 87% 30.09 in 4.0 mi ENE 5.8 mph - N/A   Overcast
5:35 AM 49.3 °F 46.2 °F 89% 30.08 in 3.0 mi East 4.6 mph - 0.01 in   Overcast
5:55 AM 49.3 °F 46.6 °F 90% 30.07 in 2.5 mi ENE 5.8 mph - 0.02 in   Overcast
6:15 AM 49.3 °F 46.6 °F 90% 30.06 in 2.5 mi East 9.2 mph - 0.01 in   Overcast
6:35 AM 49.5 °F 46.9 °F 91% 30.07 in 3.0 mi East 6.9 mph - 0.01 in   Overcast
6:50 AM 50.0 °F 46.4 °F 87% 30.07 in 2.0 mi East 11.5 mph - N/A   Overcast
6:55 AM 49.6 °F 47.3 °F 92% 30.07 in 2.5 mi East 8.1 mph - 0.02 in   Overcast
7:50 AM 50.0 °F 48.2 °F 94% 30.09 in 1.5 mi East 9.2 mph - N/A   Overcast
9:50 AM 53.6 °F 51.8 °F 94% 30.05 in 0.4 mi SE 13.8 mph - N/A   Overcast
10:50 AM 57.2 °F 55.4 °F 94% 30.02 in 2.0 mi SE 13.8 mph - N/A   Overcast
11:50 AM 62.6 °F 59.0 °F 88% 30.00 in 3.0 mi SSE 15.0 mph - N/A   Overcast
12:50 PM 69.8 °F 62.6 °F 78% 29.97 in 7.0 mi SSE 13.8 mph - N/A   Mostly Cloudy
1:50 PM 75.2 °F 64.4 °F 69% 29.92 in 7.0 mi SSE 17.3 mph 25.3 mph N/A   Mostly Cloudy
2:50 PM 78.8 °F 64.4 °F 61% 29.88 in 8.0 mi South 23.0 mph 34.5 mph N/A   Mostly Cloudy
7:50 PM 77.0 °F 60.8 °F 57% 29.74 in 10.0 mi SE 17.3 mph 26.5 mph N/A   Overcast
10:15 PM 75.4 °F 62.4 °F 64% 29.73 in 10.0 mi SSE 19.6 mph 26.5 mph 0.01 in   Clear
10:35 PM 75.4 °F 62.2 °F 64% 29.72 in 10.0 mi SSE 19.6 mph 24.2 mph 0.01 in   Clear
10:55 PM 75.2 °F 62.1 °F 64% 29.71 in 10.0 mi SSE 17.3 mph 27.6 mph 0.02 in   Clear
11:15 PM 75.2 °F 61.9 °F 63% 29.70 in 10.0 mi South 17.3 mph 25.3 mph N/A   Clear
11:35 PM 74.5 °F 61.9 °F 65% 29.71 in 10.0 mi South 13.8 mph 23.0 mph N/A   Scattered Clouds
11:55 PM 74.8 °F 61.7 °F 64% 29.69 in 10.0 mi South 20.7 mph 26.5 mph 0.01 in   Scattered Clouds