Gaithersburg, MD

4:48 PM EST on November 20, 2019 (GMT -0500)
Montgomery County

Weather History for KGAI - September, 2019

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Friday, September 13, 2019

  Actual Average (KCGS) Record (KCGS)
Temperature  
Mean Temperature 68 °F -  
Max Temperature 72 °F 82 °F 95 °F (1983)
Min Temperature 64 °F 59 °F 41 °F (1954)
Cooling Degree Days 3    
Growing Degree Days 18 (Base 50)    
Moisture  
Dew Point 62 °F    
Average Humidity 86    
Maximum Humidity 97    
Minimum Humidity 76    
Precipitation  
Precipitation 0.01 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.36 in    
Wind  
Wind Speed 5 mph (ESE)    
Max Wind Speed 9 mph    
Max Gust Speed -    
Visibility 9 miles    
Events Rain    
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

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Astronomy

Sep. 13, 2019 Rise Set
Actual Time 6:47 AM EDT 7:20 PM EDT
Civil Twilight 6:21 AM EDT 7:47 PM EDT
Nautical Twilight 5:49 AM EDT 8:19 PM EDT
Astronomical Twilight 5:16 AM EDT 8:51 PM EDT
Moon 7:32 PM EDT (9/13) 6:03 AM EDT (9/13)
Length of Visible Light 13h 26m
Length of Day
12h 32m
Full, 100% of the Moon is Illuminated
Sep 13
Full
Sep 14
Full
Sep 21
Last Quarter
Sep 28
New
Oct 5
First Quarter

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:12 AM 71.6 °F 69.8 °F 94% 30.20 in 10.0 mi East 3.5 mph - N/A   Overcast
12:43 AM 71.6 °F 69.8 °F 94% 30.22 in 10.0 mi Variable 5.8 mph - N/A   Overcast
12:56 AM 72.0 °F 69.1 °F 91% 30.25 in 10.0 mi Variable 5.8 mph - N/A   Overcast
1:56 AM 71.1 °F 66.9 °F 87% 30.26 in 10.0 mi Variable 6.9 mph - N/A   Overcast
2:20 AM 69.8 °F 66.2 °F 88% 30.24 in 5.0 mi Variable 4.6 mph - 0.00 in Rain Light Rain
2:56 AM 68.0 °F 66.9 °F 96% 30.28 in 9.0 mi Variable 4.6 mph - 0.00 in   Overcast
3:19 AM 68.0 °F 66.2 °F 94% 30.25 in 5.0 mi Variable 3.5 mph - 0.01 in   Overcast
3:35 AM 68.0 °F 66.2 °F 94% 30.25 in 4.0 mi Variable 4.6 mph - 0.01 in   Overcast
3:56 AM 68.0 °F 66.0 °F 93% 30.28 in 4.0 mi Variable 5.8 mph - 0.01 in   Overcast
4:56 AM 66.0 °F 64.9 °F 96% 30.31 in 6.0 mi Variable 6.9 mph - 0.00 in   Overcast
5:56 AM 64.9 °F 64.0 °F 97% 30.33 in 4.0 mi Variable 5.8 mph - N/A   Overcast
6:56 AM 64.0 °F 63.0 °F 96% 30.36 in 5.0 mi Variable 4.6 mph - 0.00 in   Overcast
7:37 AM 64.4 °F 60.8 °F 88% 30.34 in 10.0 mi North - - N/A   Overcast
7:56 AM 64.0 °F 61.0 °F 90% 30.38 in 10.0 mi Variable 5.8 mph - N/A   Overcast
8:56 AM 64.9 °F 61.0 °F 87% 30.40 in 10.0 mi Variable 5.8 mph - N/A   Overcast
9:18 AM 64.4 °F 60.8 °F 88% 30.37 in 10.0 mi Variable 4.6 mph - N/A   Overcast
9:56 AM 64.9 °F 59.0 °F 81% 30.41 in 10.0 mi Variable 4.6 mph - N/A   Overcast
10:56 AM 66.0 °F 59.0 °F 78% 30.43 in 10.0 mi Variable 6.9 mph - N/A   Overcast
11:56 AM 66.9 °F 59.0 °F 76% 30.43 in 10.0 mi East 9.2 mph - N/A   Overcast
12:56 PM 66.9 °F 60.1 °F 79% 30.44 in 10.0 mi East 4.6 mph - N/A   Overcast
1:56 PM 66.9 °F 60.1 °F 79% 30.43 in 10.0 mi Variable 6.9 mph - N/A   Overcast
2:56 PM 66.9 °F 60.1 °F 79% 30.42 in 10.0 mi Variable 5.8 mph - N/A   Overcast
3:56 PM 66.9 °F 60.1 °F 79% 30.42 in 10.0 mi Variable 4.6 mph - N/A   Overcast
4:56 PM 66.9 °F 59.0 °F 76% 30.42 in 10.0 mi Variable 4.6 mph - N/A   Overcast
5:34 PM 66.2 °F 59.0 °F 78% 30.39 in 10.0 mi Variable 4.6 mph - N/A   Overcast
5:56 PM 66.0 °F 59.0 °F 78% 30.42 in 10.0 mi Variable 4.6 mph - N/A   Overcast
6:56 PM 66.0 °F 59.0 °F 78% 30.41 in 10.0 mi Variable 4.6 mph - N/A   Overcast
7:56 PM 64.9 °F 59.0 °F 81% 30.42 in 10.0 mi Variable 3.5 mph - N/A   Overcast
8:56 PM 66.0 °F 59.0 °F 78% 30.43 in 10.0 mi Variable 3.5 mph - N/A   Overcast
9:56 PM 64.9 °F 60.1 °F 84% 30.42 in 10.0 mi Calm Calm - N/A   Overcast
10:56 PM 64.9 °F 60.1 °F 84% 30.42 in 10.0 mi Variable 3.5 mph - N/A   Overcast
11:56 PM 66.0 °F 59.0 °F 78% 30.41 in 10.0 mi SE 8.1 mph - N/A   Overcast