Gaithersburg, MD

3:07 AM EST on November 15, 2019 (GMT -0500)
Montgomery County

Weather History for KGAI - September, 2019

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Wednesday, September 4, 2019

  Actual Average (KCGS) Record (KCGS)
Temperature  
Mean Temperature 80 °F -  
Max Temperature 91 °F 85 °F 97 °F (1953)
Min Temperature 70 °F 63 °F 51 °F (1958)
Cooling Degree Days 16    
Growing Degree Days 30 (Base 50)    
Moisture  
Dew Point 69 °F    
Average Humidity 74    
Maximum Humidity 93    
Minimum Humidity 50    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.00 in    
Wind  
Wind Speed 6 mph (SSW)    
Max Wind Speed 10 mph    
Max Gust Speed -    
Visibility 10 miles    
Events      
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. 04, 2019 Rise Set
Actual Time 6:39 AM EDT 7:34 PM EDT
Civil Twilight 6:12 AM EDT 8:02 PM EDT
Nautical Twilight 5:40 AM EDT 8:34 PM EDT
Astronomical Twilight 5:06 AM EDT 9:07 PM EDT
Moon 12:36 PM EDT (9/4) 11:10 PM EDT (9/4)
Length of Visible Light 13h 49m
Length of Day
12h 55m
Waxing Crescent, 34% of the Moon is Illuminated
Sep 4
Waxing Crescent
Sep 5
First Quarter
Sep 14
Full
Sep 21
Last Quarter
Sep 28
New

Hourly Weather History & Observations

Time (EDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 72.0 °F - 66.0 °F 81% 30.05 in 10.0 mi SSE 6.9 mph - N/A   Clear
1:56 AM 72.0 °F - 68.0 °F 87% 30.04 in 10.0 mi South 6.9 mph - N/A   Clear
2:56 AM 70.0 °F - 68.0 °F 93% 30.03 in 10.0 mi SSW 3.5 mph - N/A   Clear
3:41 AM 71.6 °F - 68.0 °F 88% 30.00 in 10.0 mi Variable 4.6 mph - N/A   Mostly Cloudy
3:56 AM 72.0 °F - 68.0 °F 87% 30.03 in 10.0 mi SSW 4.6 mph - N/A   Overcast
4:13 AM 71.6 °F - 68.0 °F 88% 30.00 in 10.0 mi SSW 5.8 mph - N/A   Overcast
4:56 AM 71.1 °F - 69.1 °F 93% 30.03 in 10.0 mi Variable 4.6 mph - N/A   Overcast
5:56 AM 72.0 °F - 69.1 °F 91% 30.04 in 10.0 mi SSW 5.8 mph - N/A   Overcast
6:56 AM 72.0 °F - 69.1 °F 91% 30.04 in 9.0 mi SSW 9.2 mph - N/A   Overcast
7:56 AM 72.0 °F - 70.0 °F 93% 30.05 in 10.0 mi Variable 4.6 mph - N/A   Overcast
8:56 AM 75.9 °F - 71.1 °F 85% 30.03 in 10.0 mi South 6.9 mph - N/A   Mostly Cloudy
9:15 AM 78.8 °F - 71.6 °F 78% 30.00 in 10.0 mi South 8.1 mph - N/A   Partly Cloudy
9:56 AM 80.1 °F 83.6 °F 71.1 °F 74% 30.03 in 10.0 mi SW 8.1 mph - N/A   Clear
10:56 AM 84.0 °F 89.0 °F 71.1 °F 65% 30.02 in 10.0 mi Variable 5.8 mph - N/A   Clear
11:56 AM 87.1 °F 92.0 °F 70.0 °F 57% 30.01 in 10.0 mi WSW 10.4 mph - N/A   Clear
12:56 PM 89.1 °F 94.1 °F 70.0 °F 53% 29.99 in 10.0 mi WSW 8.1 mph - N/A   Clear
1:56 PM 91.0 °F 96.6 °F 70.0 °F 50% 29.97 in 10.0 mi Variable 6.9 mph - N/A   Clear
2:56 PM 91.0 °F 97.6 °F 71.1 °F 52% 29.95 in 10.0 mi SSW 10.4 mph - N/A   Mostly Cloudy
3:56 PM 89.1 °F 94.1 °F 70.0 °F 53% 29.95 in 10.0 mi West 8.1 mph - N/A   Mostly Cloudy
4:56 PM 91.0 °F 96.6 °F 70.0 °F 50% 29.94 in 10.0 mi WSW 5.8 mph - N/A   Mostly Cloudy
5:56 PM 91.0 °F 97.6 °F 71.1 °F 52% 29.95 in 10.0 mi SSW 4.6 mph - N/A   Partly Cloudy
6:56 PM 84.9 °F 90.7 °F 72.0 °F 65% 29.96 in 10.0 mi Calm Calm - N/A   Clear
7:56 PM 79.0 °F - 73.0 °F 82% 29.97 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:56 PM 79.0 °F - 71.1 °F 77% 29.98 in 10.0 mi Variable 3.5 mph - N/A   Scattered Clouds
9:56 PM 75.9 °F - 66.9 °F 74% 30.00 in 10.0 mi Calm Calm - N/A   Clear
10:56 PM 75.9 °F - 64.9 °F 69% 30.01 in 10.0 mi Variable 3.5 mph - N/A   Clear
11:56 PM 75.0 °F - 63.0 °F 66% 30.03 in 10.0 mi Calm Calm - N/A   Clear