Weather History for Baltimore, MD

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Tuesday, December 20, 2011

  Actual Average Record
Temperature  
Mean Temperature 49 °F 35 °F  
Max Temperature 53 °F 44 °F 67 °F (1887)
Min Temperature 44 °F 27 °F 6 °F (1942)
Degree Days  
Heating Degree Days 16 30  
Month to date heating degree days 453 540  
Since 1 July heating degree days 1167 1444  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1558 1164  
Moisture  
Dew Point 38 °F    
Average Humidity 68    
Maximum Humidity 89    
Minimum Humidity 46    
Precipitation  
Precipitation T in 0.10 in 1.60 in (1957)
Month to date precipitation 2.64 2.26  
Year to date precipitation 54.66 40.77  
Snow  
Snow 0.00 in 0.10 in 3.00 in (1966)
Month to date snowfall T 1.7  
Since 1 July snowfall T 2.1  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.13 in    
Wind  
Wind Speed 4 mph (WSW)    
Max Wind Speed 8 mph    
Max Gust Speed 25 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 20, 2011 Rise Set
Actual Time 7:21 AM EST 4:46 PM EST
Civil Twilight 6:51 AM EST 5:16 PM EST
Nautical Twilight 6:18 AM EST 5:50 PM EST
Astronomical Twilight 5:45 AM EST 6:23 PM EST
Moon 2:41 AM EST (12/20) 1:20 PM EST (12/20)
Length of Visible Light 10h 25m
Length of Day
9h 24m
Waning Crescent, 21% of the Moon is Illuminated
Dec 20
Waning Crescent
Dec 24
New
Jan 1
First Quarter
Jan 9
Full
Jan 16
Last Quarter

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 48.9 °F - 30.0 °F 48% 30.05 in 10.0 mi WSW 6.9 mph - N/A   Overcast
1:54 AM 48.9 °F - 30.9 °F 50% 30.07 in 10.0 mi WSW 4.6 mph - N/A   Overcast
2:54 AM 48.9 °F - 32.0 °F 52% 30.09 in 10.0 mi SW 4.6 mph - 0.00 in   Overcast
3:54 AM 48.9 °F - 32.0 °F 52% 30.09 in 10.0 mi WSW 4.6 mph - N/A   Overcast
4:54 AM 48.9 °F - 34.0 °F 56% 30.09 in 10.0 mi West 8.1 mph - N/A   Overcast
5:54 AM 50.0 °F - 36.0 °F 59% 30.12 in 10.0 mi West 6.9 mph - N/A   Overcast
6:54 AM 50.0 °F - 37.4 °F 62% 30.13 in 10.0 mi West 4.6 mph - N/A   Overcast
7:54 AM 50.0 °F - 37.9 °F 63% 30.14 in 10.0 mi West 4.6 mph - N/A   Overcast
8:54 AM 50.0 °F - 39.9 °F 68% 30.15 in 10.0 mi West 3.5 mph - N/A   Overcast
9:54 AM 51.1 °F - 39.9 °F 66% 30.18 in 10.0 mi WSW 4.6 mph - N/A   Overcast
10:54 AM 52.0 °F - 39.0 °F 61% 30.17 in 10.0 mi WSW 5.8 mph - N/A   Overcast
11:54 AM 52.0 °F - 39.0 °F 61% 30.16 in 10.0 mi WNW 3.5 mph - N/A   Overcast
12:54 PM 52.0 °F - 41.0 °F 66% 30.14 in 10.0 mi Calm Calm - N/A   Overcast
1:54 PM 53.1 °F - 39.9 °F 61% 30.12 in 10.0 mi Calm Calm - N/A   Overcast
2:54 PM 53.1 °F - 39.0 °F 59% 30.12 in 10.0 mi Calm Calm - N/A   Overcast
3:54 PM 52.0 °F - 39.0 °F 61% 30.13 in 10.0 mi Calm Calm - N/A   Overcast
4:54 PM 48.9 °F - 39.0 °F 69% 30.13 in 10.0 mi ESE 4.6 mph - N/A   Mostly Cloudy
5:54 PM 45.0 °F 42.6 °F 39.0 °F 80% 30.15 in 10.0 mi East 4.6 mph - N/A   Mostly Cloudy
6:54 PM 46.0 °F 43.9 °F 39.9 °F 79% 30.16 in 10.0 mi NE 4.6 mph - N/A   Mostly Cloudy
7:54 PM 46.0 °F 43.1 °F 41.0 °F 83% 30.15 in 9.0 mi ENE 5.8 mph - N/A   Overcast
8:54 PM 44.1 °F 41.5 °F 39.9 °F 85% 30.14 in 8.0 mi East 4.6 mph - N/A   Overcast
9:54 PM 45.0 °F 43.5 °F 41.0 °F 86% 30.13 in 9.0 mi East 3.5 mph - N/A   Overcast
10:54 PM 45.0 °F 43.5 °F 39.9 °F 82% 30.12 in 9.0 mi East 3.5 mph - N/A   Overcast
11:54 PM 45.0 °F - 39.9 °F 82% 30.11 in 9.0 mi Calm Calm - N/A   Mostly Cloudy