Gaithersburg, MD

8:11 PM EST on November 14, 2019 (GMT -0500)
Montgomery County

Weather History for KGAI - September, 2019

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Tuesday, September 10, 2019

  Actual Average (KCGS) Record (KCGS)
Temperature  
Mean Temperature 74 °F -  
Max Temperature 87 °F 83 °F 95 °F (1985)
Min Temperature 63 °F 61 °F 39 °F (1956)
Cooling Degree Days 10    
Growing Degree Days 24 (Base 50)    
Moisture  
Dew Point 64 °F    
Average Humidity 73    
Maximum Humidity 97    
Minimum Humidity 48    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.33 in    
Wind  
Wind Speed 3 mph (SSE)    
Max Wind Speed 9 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. 10, 2019 Rise Set
Actual Time 6:45 AM EDT 7:25 PM EDT
Civil Twilight 6:18 AM EDT 7:52 PM EDT
Nautical Twilight 5:46 AM EDT 8:24 PM EDT
Astronomical Twilight 5:13 AM EDT 8:57 PM EDT
Moon 5:58 PM EDT (9/10) 3:11 AM EDT (9/10)
Length of Visible Light 13h 34m
Length of Day
12h 40m
Waxing Gibbous, 89% of the Moon is Illuminated
Sep 10
Waxing Gibbous
Sep 14
Full
Sep 21
Last Quarter
Sep 28
New
Oct 5
First Quarter

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 66.0 °F - 62.1 °F 87% 30.30 in 10.0 mi ESE 3.5 mph - N/A   Clear
1:56 AM 66.0 °F - 63.0 °F 90% 30.31 in 10.0 mi Calm Calm - N/A   Clear
2:56 AM 63.0 °F - 62.1 °F 97% 30.32 in 9.0 mi Calm Calm - N/A   Clear
3:56 AM 63.0 °F - 62.1 °F 97% 30.32 in 8.0 mi Calm Calm - N/A   Clear
4:56 AM 64.0 °F - 63.0 °F 96% 30.34 in 10.0 mi Calm Calm - N/A   Scattered Clouds
5:56 AM 63.0 °F - 61.0 °F 93% 30.35 in 9.0 mi Calm Calm - N/A   Clear
6:56 AM 63.0 °F - 62.1 °F 97% 30.36 in 8.0 mi Calm Calm - N/A   Partly Cloudy
7:56 AM 64.9 °F - 63.0 °F 93% 30.37 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:56 AM 70.0 °F - 66.0 °F 87% 30.39 in 10.0 mi SE 5.8 mph - N/A   Scattered Clouds
9:56 AM 75.9 °F - 68.0 °F 76% 30.39 in 10.0 mi SSE 6.9 mph - N/A   Clear
10:56 AM 78.1 °F - 64.0 °F 62% 30.38 in 10.0 mi SSW 5.8 mph - N/A   Mostly Cloudy
11:56 AM 82.0 °F 83.4 °F 64.0 °F 54% 30.38 in 10.0 mi SSE 9.2 mph - N/A   Scattered Clouds
12:56 PM 84.0 °F 85.4 °F 64.0 °F 51% 30.36 in 10.0 mi SSW 9.2 mph - N/A   Partly Cloudy
1:56 PM 86.0 °F 87.3 °F 64.0 °F 48% 30.34 in 10.0 mi North - - N/A   Scattered Clouds
2:56 PM 86.0 °F 87.3 °F 64.0 °F 48% 30.33 in 10.0 mi South 9.2 mph - N/A   Scattered Clouds
3:56 PM 84.9 °F 85.9 °F 63.0 °F 48% 30.32 in 10.0 mi SSW 8.1 mph - N/A   Partly Cloudy
4:56 PM 84.0 °F 84.9 °F 63.0 °F 49% 30.32 in 10.0 mi SSW 5.8 mph - N/A   Clear
5:56 PM 82.9 °F 84.4 °F 64.0 °F 53% 30.31 in 10.0 mi South 5.8 mph - N/A   Clear
6:56 PM 81.0 °F 82.7 °F 64.9 °F 58% 30.31 in 10.0 mi SSE 4.6 mph - N/A   Clear
7:56 PM 77.0 °F - 64.0 °F 64% 30.30 in 10.0 mi SSE 4.6 mph - N/A   Clear
8:56 PM 73.0 °F - 64.9 °F 76% 30.30 in 10.0 mi Calm Calm - N/A   Clear
9:56 PM 73.0 °F - 64.9 °F 76% 30.31 in 10.0 mi SE 9.2 mph - N/A   Clear
10:56 PM 72.0 °F - 64.9 °F 78% 30.30 in 10.0 mi SSE 8.1 mph - N/A   Clear
11:56 PM 72.0 °F - 64.0 °F 76% 30.31 in 10.0 mi SSE 6.9 mph - N/A   Clear