Weather History for Gaithersburg, MD

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Tuesday, November 20, 2012

  Actual Average (KCGS) Record (KCGS)
Temperature  
Mean Temperature 42 °F -  
Max Temperature 51 °F 55 °F 75 °F (1985)
Min Temperature 33 °F 36 °F 19 °F (1959)
Degree Days  
Heating Degree Days 23    
Moisture  
Dew Point 37 °F    
Average Humidity 81    
Maximum Humidity 93    
Minimum Humidity 62    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.18 in    
Wind  
Wind Speed 1 mph (NNW)    
Max Wind Speed 5 mph    
Max Gust Speed -    
Visibility 9 miles    
Events      
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Nov. 20, 2012 Rise Set
Actual Time 6:57 AM EST 4:50 PM EST
Civil Twilight 6:28 AM EST 5:19 PM EST
Nautical Twilight 5:56 AM EST 5:52 PM EST
Astronomical Twilight 5:24 AM EST 6:23 PM EST
Moon 12:32 PM EST (11/20) No Moon Set
Length of Visible Light 10h 50m
Length of Day
9h 52m
Waxing Crescent, 51% of the Moon is Illuminated
Nov 20
Waxing Crescent
Nov 28
Full
Dec 6
Last Quarter
Dec 13
New
Dec 20
First Quarter

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 37.4 °F - 32.0 °F 81% 30.25 in 10.0 mi Calm Calm - N/A   Clear
12:35 AM 37.4 °F - 32.0 °F 81% 30.24 in 10.0 mi Calm Calm - N/A   Clear
12:55 AM 37.4 °F - 32.0 °F 81% 30.23 in 10.0 mi Calm Calm - N/A   Clear
1:15 AM 35.6 °F - 30.2 °F 81% 30.22 in 10.0 mi Calm Calm - N/A   Clear
1:35 AM 35.6 °F - 30.2 °F 81% 30.22 in 10.0 mi Calm Calm - N/A   Clear
1:55 AM 33.8 °F - 30.2 °F 87% 30.22 in 10.0 mi Calm Calm - N/A   Clear
2:15 AM 33.8 °F - 30.2 °F 87% 30.23 in 10.0 mi Calm Calm - N/A   Clear
2:35 AM 33.8 °F - 30.2 °F 87% 30.22 in 10.0 mi Calm Calm - N/A   Clear
2:55 AM 33.8 °F - 30.2 °F 87% 30.22 in 10.0 mi Calm Calm - N/A   Clear
3:15 AM 35.6 °F - 32.0 °F 87% 30.22 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:35 AM 35.6 °F - 32.0 °F 87% 30.22 in 10.0 mi Calm Calm - N/A   Overcast
3:55 AM 35.6 °F - 32.0 °F 87% 30.21 in 10.0 mi Calm Calm - N/A   Overcast
4:15 AM 35.6 °F - 33.8 °F 93% 30.21 in 10.0 mi Calm Calm - N/A   Overcast
4:35 AM 37.4 °F - 33.8 °F 87% 30.21 in 10.0 mi Calm Calm - N/A   Overcast
4:55 AM 35.6 °F - 33.8 °F 93% 30.22 in 10.0 mi Calm Calm - N/A   Overcast
5:15 AM 37.4 °F - 33.8 °F 87% 30.22 in 10.0 mi Calm Calm - N/A   Overcast
5:35 AM 37.4 °F - 33.8 °F 87% 30.21 in 10.0 mi Calm Calm - N/A   Overcast
5:55 AM 37.4 °F - 33.8 °F 87% 30.20 in 9.0 mi Calm Calm - N/A   Overcast
6:15 AM 37.4 °F 34.9 °F 33.8 °F 87% 30.21 in 10.0 mi NW 3.5 mph - N/A   Overcast
6:35 AM 37.4 °F - 33.8 °F 87% 30.21 in 10.0 mi Calm Calm - N/A   Overcast
6:55 AM 37.4 °F - 33.8 °F 87% 30.22 in 9.0 mi Calm Calm - N/A   Overcast
7:15 AM 37.4 °F - 33.8 °F 87% 30.21 in 7.0 mi Calm Calm - N/A   Overcast
7:35 AM 37.4 °F - 33.8 °F 87% 30.21 in 7.0 mi Calm Calm - N/A   Overcast
7:55 AM 39.2 °F - 35.6 °F 87% 30.22 in 7.0 mi Calm Calm - N/A   Overcast
8:15 AM 41.0 °F 38.0 °F 37.4 °F 87% 30.22 in 7.0 mi NW 4.6 mph - N/A   Overcast
8:35 AM 42.8 °F - 37.4 °F 81% 30.22 in 8.0 mi Calm Calm - N/A   Overcast
8:55 AM 42.8 °F - 37.4 °F 81% 30.21 in 9.0 mi Calm Calm - N/A   Overcast
9:15 AM 44.6 °F - 37.4 °F 76% 30.21 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
9:35 AM 44.6 °F 42.2 °F 39.2 °F 81% 30.21 in 9.0 mi NNW 4.6 mph - N/A   Partly Cloudy
9:55 AM 46.4 °F - 39.2 °F 76% 30.21 in 9.0 mi Calm Calm - N/A   Partly Cloudy
10:15 AM 48.2 °F - 39.2 °F 71% 30.20 in 10.0 mi ENE 4.6 mph - N/A   Partly Cloudy
10:35 AM 48.2 °F - 39.2 °F 71% 30.20 in 10.0 mi Calm Calm - N/A   Clear
10:55 AM 48.2 °F - 39.2 °F 71% 30.20 in 10.0 mi Calm Calm - N/A   Clear
11:15 AM 48.2 °F - 39.2 °F 71% 30.19 in 10.0 mi Calm Calm - N/A   Clear
11:35 AM 48.2 °F - 41.0 °F 76% 30.18 in 10.0 mi NW 4.6 mph - N/A   Clear
11:55 AM 50.0 °F - 41.0 °F 71% 30.17 in 10.0 mi Calm Calm - N/A   Clear
12:15 PM 50.0 °F - 39.2 °F 66% 30.16 in 10.0 mi North 3.5 mph - N/A   Clear
12:35 PM 50.0 °F - 41.0 °F 71% 30.16 in 10.0 mi Calm Calm - N/A   Clear
12:55 PM 51.8 °F - 39.2 °F 62% 30.16 in 10.0 mi Calm Calm - N/A   Clear
1:15 PM 51.8 °F - 41.0 °F 67% 30.14 in 10.0 mi Calm Calm - N/A   Clear
1:35 PM 51.8 °F - 41.0 °F 67% 30.13 in 10.0 mi NW 3.5 mph - N/A   Clear
1:55 PM 51.8 °F - 39.2 °F 62% 30.13 in 10.0 mi Calm Calm - N/A   Clear
2:15 PM 51.8 °F - 41.0 °F 67% 30.12 in 10.0 mi NNW 3.5 mph - N/A   Clear
2:35 PM 51.8 °F - 41.0 °F 67% 30.12 in 10.0 mi NNW 3.5 mph - N/A   Clear
2:55 PM 51.8 °F - 41.0 °F 67% 30.13 in 10.0 mi NW 3.5 mph - N/A   Clear
3:15 PM 51.8 °F - 39.2 °F 62% 30.12 in 10.0 mi North 3.5 mph - N/A   Partly Cloudy
3:35 PM 50.0 °F - 39.2 °F 66% 30.12 in 10.0 mi Calm Calm - N/A   Partly Cloudy
3:55 PM 50.0 °F - 41.0 °F 71% 30.12 in 10.0 mi NNE 3.5 mph - N/A   Clear
4:15 PM 48.2 °F - 41.0 °F 76% 30.12 in 10.0 mi NE 3.5 mph - N/A   Clear
4:35 PM 48.2 °F - 39.2 °F 71% 30.12 in 10.0 mi Calm Calm - N/A   Clear
4:55 PM 48.2 °F - 39.2 °F 71% 30.13 in 10.0 mi Calm Calm - N/A   Clear
5:15 PM 46.4 °F - 39.2 °F 76% 30.13 in 10.0 mi Calm Calm - N/A   Clear
5:35 PM 46.4 °F - 39.2 °F 76% 30.13 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:55 PM 46.4 °F - 39.2 °F 76% 30.14 in 10.0 mi Calm Calm - N/A   Clear
6:15 PM 46.4 °F - 39.2 °F 76% 30.14 in 10.0 mi Calm Calm - N/A   Clear
6:35 PM 46.4 °F - 39.2 °F 76% 30.14 in 10.0 mi Calm Calm - N/A   Clear
6:55 PM 46.4 °F - 39.2 °F 76% 30.15 in 10.0 mi Calm Calm - N/A   Clear
7:15 PM 44.6 °F - 39.2 °F 81% 30.15 in 10.0 mi Calm Calm - N/A   Clear
7:35 PM 44.6 °F - 39.2 °F 81% 30.16 in 10.0 mi Calm Calm - N/A   Clear
7:55 PM 42.8 °F - 39.2 °F 87% 30.16 in 10.0 mi Calm Calm - N/A   Clear
8:15 PM 42.8 °F - 37.4 °F 81% 30.16 in 10.0 mi Calm Calm - N/A   Clear
8:35 PM 39.2 °F - 37.4 °F 93% 30.15 in 10.0 mi Calm Calm - N/A   Clear
8:55 PM 41.0 °F - 39.2 °F 93% 30.15 in 10.0 mi Calm Calm - N/A   Clear
9:15 PM 39.2 °F - 37.4 °F 93% 30.16 in 8.0 mi Calm Calm - N/A   Clear
9:35 PM 39.2 °F - 37.4 °F 93% 30.16 in 9.0 mi Calm Calm - N/A   Clear
9:55 PM 39.2 °F - 37.4 °F 93% 30.16 in 9.0 mi Calm Calm - N/A   Clear
10:15 PM 39.2 °F - 37.4 °F 93% 30.17 in 7.0 mi Calm Calm - N/A   Clear
10:35 PM 39.2 °F - 37.4 °F 93% 30.17 in 5.0 mi Calm Calm - N/A   Clear
10:55 PM 37.4 °F - 35.6 °F 93% 30.17 in 5.0 mi Calm Calm - N/A   Clear
11:15 PM 37.4 °F - 35.6 °F 93% 30.17 in 4.0 mi Calm Calm - N/A   Clear
11:35 PM 37.4 °F - 35.6 °F 93% 30.17 in 5.0 mi Calm Calm - N/A   Clear
11:55 PM 35.6 °F - 33.8 °F 93% 30.17 in 4.0 mi Calm Calm - N/A   Clear