Gaithersburg, MD

10:29 AM EST on November 17, 2019 (GMT -0500)
Montgomery County

Weather History for KGAI - September, 2019

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Tuesday, September 3, 2019

  Actual Average (KCGS) Record (KCGS)
Temperature  
Mean Temperature 76 °F -  
Max Temperature 87 °F 85 °F 99 °F (1953)
Min Temperature 66 °F 63 °F 45 °F (1967)
Cooling Degree Days 11    
Growing Degree Days 26 (Base 50)    
Moisture  
Dew Point 64 °F    
Average Humidity 74    
Maximum Humidity 100    
Minimum Humidity 43    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.08 in    
Wind  
Wind Speed 1 mph (South)    
Max Wind Speed 8 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

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

Sep. 03, 2019 Rise Set
Actual Time 6:38 AM EDT 7:36 PM EDT
Civil Twilight 6:11 AM EDT 8:03 PM EDT
Nautical Twilight 5:39 AM EDT 8:36 PM EDT
Astronomical Twilight 5:05 AM EDT 9:09 PM EDT
Moon 11:27 AM EDT (9/3) 10:34 PM EDT (9/3)
Length of Visible Light 13h 52m
Length of Day
12h 57m
Waxing Crescent, 24% of the Moon is Illuminated
Sep 3
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 68.0 °F - 66.9 °F 96% 30.07 in 8.0 mi Calm Calm - N/A   Clear
1:56 AM 68.0 °F - 66.9 °F 96% 30.08 in 8.0 mi Calm Calm - N/A   Clear
2:29 AM 66.2 °F - 66.2 °F 100% 30.03 in 1.8 mi Calm Calm - N/A   Clear
2:40 AM 68.0 °F - 66.2 °F 94% 30.04 in 4.0 mi Calm Calm - N/A   Clear
2:56 AM 66.9 °F - 66.9 °F 100% 30.06 in 10.0 mi Calm Calm - N/A   Clear
3:56 AM 66.0 °F - 64.9 °F 96% 30.06 in 10.0 mi Calm Calm - N/A   Clear
4:56 AM 66.0 °F - 64.9 °F 96% 30.06 in 10.0 mi Calm Calm - N/A   Clear
5:56 AM 66.0 °F - 64.0 °F 93% 30.08 in 10.0 mi Calm Calm - N/A   Clear
6:56 AM 66.0 °F - 63.0 °F 90% 30.11 in 10.0 mi Calm Calm - N/A   Clear
7:56 AM 66.9 °F - 64.9 °F 93% 30.13 in 10.0 mi Calm Calm - N/A   Clear
8:56 AM 72.0 °F - 66.0 °F 81% 30.14 in 10.0 mi Variable 3.5 mph - N/A   Clear
9:56 AM 75.0 °F - 66.0 °F 73% 30.13 in 10.0 mi Variable 4.6 mph - N/A   Clear
10:56 AM 77.0 °F - 64.0 °F 64% 30.13 in 10.0 mi NW 3.5 mph - N/A   Clear
11:56 AM 80.1 °F 81.7 °F 64.0 °F 58% 30.12 in 10.0 mi Calm Calm - N/A   Scattered Clouds
12:56 PM 82.0 °F 83.1 °F 63.0 °F 52% 30.10 in 10.0 mi Variable 3.5 mph - N/A   Partly Cloudy
1:56 PM 82.0 °F 83.0 °F 62.1 °F 51% 30.09 in 10.0 mi WSW 4.6 mph - N/A   Clear
2:56 PM 84.0 °F 84.4 °F 61.0 °F 46% 30.08 in 10.0 mi NW 3.5 mph - N/A   Clear
3:56 PM 84.0 °F 85.4 °F 64.0 °F 51% 30.06 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
4:56 PM 86.0 °F 86.1 °F 61.0 °F 43% 30.05 in 10.0 mi SW 4.6 mph - N/A   Partly Cloudy
5:56 PM 84.0 °F 84.0 °F 60.1 °F 44% 30.05 in 10.0 mi Calm Calm - N/A   Clear
6:56 PM 82.9 °F 83.7 °F 62.1 °F 49% 30.05 in 10.0 mi Calm Calm - N/A   Clear
7:56 PM 73.9 °F - 64.9 °F 73% 30.05 in 10.0 mi ESE 4.6 mph - N/A   Clear
8:56 PM 73.9 °F - 63.0 °F 68% 30.04 in 10.0 mi SE 8.1 mph - N/A   Clear
9:56 PM 71.1 °F - 63.0 °F 75% 30.06 in 10.0 mi Calm Calm - N/A   Clear
10:56 PM 70.0 °F - 63.0 °F 78% 30.06 in 10.0 mi SE 4.6 mph - N/A   Clear
11:56 PM 72.0 °F - 64.0 °F 76% 30.05 in 10.0 mi SE 6.9 mph - N/A   Clear