Weather History for Atlanta Dekalb, GA

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Tuesday, December 20, 2011

  Actual Average Record
Temperature  
Mean Temperature 52 °F 43 °F  
Max Temperature 59 °F 52 °F 69 °F (2008)
Min Temperature 45 °F 34 °F 12 °F (2000)
Degree Days  
Heating Degree Days 13 22  
Month to date heating degree days 392  
Since 1 July heating degree days 919  
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 50 °F    
Average Humidity 86    
Maximum Humidity 94    
Minimum Humidity 74    
Precipitation  
Precipitation 0.30 in 0.12 in 0.30 in (2011)
Month to date precipitation 3.01  
Snow  
Snow 0.00 in - - ()
Month to date snowfall  
Since 1 July snowfall  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 30.15 in    
Wind  
Wind Speed 2 mph (SE)    
Max Wind Speed 9 mph    
Max Gust Speed -    
Visibility 7 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 20, 2011 Rise Set
Actual Time 7:37 AM EST 5:31 PM EST
Civil Twilight 7:09 AM EST 5:59 PM EST
Nautical Twilight 6:38 AM EST 6:30 PM EST
Astronomical Twilight 6:08 AM EST 7:01 PM EST
Moon 3:04 AM EST (12/20) 2:01 PM EST (12/20)
Length of Visible Light 10h 49m
Length of Day
9h 54m
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
12:53 AM 45.0 °F - 39.9 °F 82% 30.20 in 9.0 mi Calm Calm - N/A   Clear
1:53 AM 45.0 °F 43.5 °F 39.9 °F 82% 30.18 in 8.0 mi NNE 3.5 mph - N/A   Clear
2:53 AM 46.0 °F - 41.0 °F 83% 30.19 in 9.0 mi Calm Calm - N/A   Mostly Cloudy
3:53 AM 46.9 °F - 42.1 °F 83% 30.18 in 9.0 mi Calm Calm - N/A   Overcast
4:53 AM 48.2 °F - 42.8 °F 82% 30.17 in 10.0 mi Calm Calm - N/A   Overcast
5:53 AM 48.9 °F - 42.1 °F 77% 30.18 in 10.0 mi Calm Calm - N/A   Overcast
6:53 AM 50.0 °F - 42.1 °F 74% 30.18 in 10.0 mi NE 3.5 mph - N/A   Overcast
7:53 AM 51.1 °F - 43.0 °F 74% 30.19 in 9.0 mi Calm Calm - N/A   Overcast
8:53 AM 51.1 °F - 43.0 °F 74% 30.20 in 8.0 mi ENE 4.6 mph - N/A   Overcast
9:53 AM 52.0 °F - 45.0 °F 77% 30.21 in 9.0 mi East 3.5 mph - N/A   Overcast
10:53 AM 54.0 °F - 48.0 °F 80% 30.19 in 9.0 mi SSE 3.5 mph - N/A   Overcast
11:53 AM 57.0 °F - 50.0 °F 77% 30.17 in 8.0 mi South 5.8 mph - N/A   Overcast
12:53 PM 59.0 °F - 52.0 °F 78% 30.14 in 7.0 mi SSW 6.9 mph - 0.00 in   Overcast
1:01 PM 57.2 °F - 51.8 °F 82% 30.14 in 7.0 mi SSW 9.2 mph - N/A   Overcast
1:06 PM 57.2 °F - 53.6 °F 88% 30.14 in 2.0 mi South 6.9 mph - 0.00 in Rain Light Rain
1:53 PM 55.9 °F - 54.0 °F 93% 30.12 in 2.0 mi South 5.8 mph - 0.08 in Rain Rain
2:53 PM 57.0 °F - 54.0 °F 89% 30.09 in 6.0 mi SSE 3.5 mph - 0.01 in   Overcast
3:53 PM 57.0 °F - 54.0 °F 89% 30.10 in 6.0 mi SE 5.8 mph - 0.00 in Rain Light Rain
4:53 PM 57.0 °F - 54.0 °F 89% 30.12 in 6.0 mi Calm Calm - 0.01 in   Overcast
5:53 PM 55.9 °F - 54.0 °F 93% 30.12 in 7.0 mi East 4.6 mph - 0.00 in   Overcast
6:53 PM 55.9 °F - 54.0 °F 93% 30.14 in 5.0 mi ESE 3.5 mph - 0.01 in Rain Light Rain
7:53 PM 55.9 °F - 54.0 °F 93% 30.13 in 4.0 mi ESE 4.6 mph - 0.05 in Rain Rain
8:35 PM 55.4 °F - 53.6 °F 94% 30.12 in 8.0 mi Variable 3.5 mph - 0.07 in Rain Light Rain
8:53 PM 55.9 °F - 54.0 °F 93% 30.12 in 7.0 mi Calm Calm - 0.07 in Rain Light Rain
9:53 PM 55.9 °F - 53.1 °F 90% 30.13 in 8.0 mi Calm Calm - 0.01 in   Overcast
10:04 PM 55.4 °F - 53.6 °F 94% 30.13 in 6.0 mi Variable 3.5 mph - 0.01 in Rain Light Rain
10:53 PM 55.9 °F - 53.1 °F 90% 30.12 in 8.0 mi Calm Calm - 0.03 in   Overcast
11:00 PM 55.4 °F - 53.6 °F 94% 30.12 in 8.0 mi SE 4.6 mph - 0.00 in Rain Light Rain
11:09 PM 55.4 °F - 53.6 °F 94% 30.12 in 9.0 mi SE 4.6 mph - 0.00 in   Overcast
11:53 PM 55.9 °F - 54.0 °F 93% 30.11 in 3.0 mi Calm Calm - 0.03 in Rain Light Rain
11:59 PM 55.4 °F - 53.6 °F 94% 30.11 in 2.5 mi Calm Calm - 0.01 in Rain Rain