Weather History for Allentown, PA

Change the Weather History Date:

Wednesday, December 28, 2011

  Actual Average Record
Temperature  
Mean Temperature 35 °F 29 °F  
Max Temperature 42 °F 37 °F 63 °F (1982)
Min Temperature 28 °F 21 °F -8 °F (1950)
Degree Days  
Heating Degree Days 30 36  
Month to date heating degree days 732 906  
Since 1 July heating degree days 1669 2086  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1075 757  
Moisture  
Dew Point 24 °F    
Average Humidity 68    
Maximum Humidity 92    
Minimum Humidity 44    
Precipitation  
Precipitation T in 0.10 in 1.04 in (1967)
Month to date precipitation 4.18 3.30  
Year to date precipitation 71.72 45.07  
Snow  
Snow T in 0.30 in 5.30 in (1990)
Month to date snowfall T 4.5  
Since 1 July snowfall 6.8 5.2  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.66 in    
Wind  
Wind Speed 14 mph (West)    
Max Wind Speed 30 mph    
Max Gust Speed 44 mph    
Visibility 10 miles    
Events      
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

Dec. 28, 2011 Rise Set
Actual Time 7:24 AM EST 4:41 PM EST
Civil Twilight 6:53 AM EST 5:12 PM EST
Nautical Twilight 6:19 AM EST 5:47 PM EST
Astronomical Twilight 5:46 AM EST 6:20 PM EST
Moon 9:48 AM EST (12/28) 9:17 PM EST (12/28)
Length of Visible Light 10h 18m
Length of Day
9h 17m
Waxing Crescent, 18% of the Moon is Illuminated
Dec 28
Waxing Crescent
Jan 1
First Quarter
Jan 9
Full
Jan 16
Last Quarter
Jan 23
New

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:51 AM 39.9 °F 35.1 °F 37.9 °F 93% 29.43 in 10.0 mi West 6.9 mph - N/A   Mostly Cloudy
1:51 AM 39.9 °F 34.5 °F 37.0 °F 89% 29.43 in 9.0 mi SW 8.1 mph - N/A   Overcast
2:51 AM 39.0 °F 33.4 °F 37.0 °F 93% 29.45 in 9.0 mi WSW 8.1 mph - N/A   Mostly Cloudy
3:51 AM 39.9 °F 32.9 °F 35.1 °F 83% 29.46 in 10.0 mi WSW 11.5 mph - N/A   Overcast
4:51 AM 41.0 °F 35.8 °F 32.0 °F 70% 29.47 in 10.0 mi West 8.1 mph - N/A   Overcast
5:51 AM 39.0 °F 31.8 °F 30.9 °F 73% 29.49 in 10.0 mi West 11.5 mph 20.7 mph N/A   Scattered Clouds
6:51 AM 39.9 °F 32.1 °F 30.9 °F 70% 29.51 in 10.0 mi West 13.8 mph - N/A   Overcast
7:51 AM 39.9 °F 32.1 °F 30.9 °F 70% 29.52 in 10.0 mi WSW 13.8 mph - N/A   Overcast
8:51 AM 41.0 °F 33.1 °F 30.9 °F 67% 29.56 in 10.0 mi West 15.0 mph 21.9 mph N/A   Mostly Cloudy
9:51 AM 41.0 °F 33.1 °F 28.0 °F 60% 29.60 in 10.0 mi West 15.0 mph 25.3 mph N/A   Overcast
10:51 AM 39.9 °F 31.1 °F 26.1 °F 58% 29.62 in 10.0 mi West 17.3 mph 28.8 mph N/A   Overcast
11:51 AM 39.9 °F 31.4 °F 23.0 °F 51% 29.62 in 10.0 mi WNW 16.1 mph 28.8 mph N/A   Overcast
12:51 PM 39.0 °F 27.8 °F 19.9 °F 46% 29.63 in 10.0 mi WNW 26.5 mph 36.8 mph N/A   Overcast
1:51 PM 37.0 °F 26.7 °F 19.9 °F 50% 29.66 in 10.0 mi West 19.6 mph 33.4 mph N/A   Overcast
2:51 PM 36.0 °F 26.3 °F 21.0 °F 55% 29.70 in 10.0 mi WNW 16.1 mph 29.9 mph N/A   Overcast
3:51 PM 36.0 °F 26.0 °F 18.0 °F 48% 29.75 in 10.0 mi WNW 17.3 mph 28.8 mph N/A   Overcast
4:51 PM 34.0 °F 23.4 °F 16.0 °F 48% 29.78 in 10.0 mi WNW 17.3 mph 29.9 mph N/A   Mostly Cloudy
5:51 PM 33.1 °F 23.0 °F 17.1 °F 52% 29.82 in 10.0 mi West 15.0 mph 23.0 mph N/A   Overcast
6:51 PM 32.0 °F 22.5 °F 17.1 °F 54% 29.84 in 10.0 mi West 12.7 mph 21.9 mph N/A   Partly Cloudy
7:51 PM 32.0 °F 22.5 °F 15.1 °F 50% 29.86 in 10.0 mi WNW 12.7 mph 21.9 mph N/A   Mostly Cloudy
8:51 PM 32.0 °F 21.6 °F 16.0 °F 52% 29.87 in 10.0 mi West 15.0 mph 28.8 mph N/A   Mostly Cloudy
9:51 PM 30.9 °F 21.7 °F 14.0 °F 50% 29.90 in 10.0 mi West 11.5 mph 19.6 mph N/A   Overcast
10:51 PM 28.9 °F 18.2 °F 12.0 °F 49% 29.91 in 10.0 mi WNW 13.8 mph - N/A   Clear
11:51 PM 28.0 °F 18.6 °F 12.9 °F 53% 29.91 in 10.0 mi WNW 10.4 mph - N/A   Clear