Gaithersburg, MD

9:35 AM EST on November 17, 2019 (GMT -0500)
Montgomery County

Weather History for KGAI - September, 2019

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Friday, September 20, 2019

  Actual Average (WUND) Record (WUND)
Temperature  
Mean Temperature 62 °F -  
Max Temperature 79 °F - - (-1)
Min Temperature 46 °F - - (-1)
Degree Days  
Heating Degree Days 2    
Growing Degree Days 12 (Base 50)    
Moisture  
Dew Point 50 °F    
Average Humidity 70    
Maximum Humidity 97    
Minimum Humidity 38    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.32 in    
Wind  
Wind Speed 2 mph (SSW)    
Max Wind Speed 8 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. 20, 2019 Rise Set
Actual Time 6:54 AM EDT 7:09 PM EDT
Civil Twilight 6:27 AM EDT 7:36 PM EDT
Nautical Twilight 5:56 AM EDT 8:07 PM EDT
Astronomical Twilight 5:24 AM EDT 8:39 PM EDT
Moon 11:00 PM EDT (9/20) 12:54 PM EDT (9/20)
Length of Visible Light 13h 08m
Length of Day
12h 15m
Waning Gibbous, 65% of the Moon is Illuminated
Sep 20
Waning Gibbous
Sep 21
Last Quarter
Sep 28
New
Oct 5
First Quarter
Oct 13
Full

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 48.0 °F 46.0 °F 93% 30.34 in 10.0 mi Calm Calm - N/A   Clear
1:56 AM 46.9 °F 46.0 °F 97% 30.34 in 10.0 mi Calm Calm - N/A   Clear
2:56 AM 46.9 °F 46.0 °F 97% 30.34 in 10.0 mi Calm Calm - N/A   Clear
3:56 AM 46.9 °F 46.0 °F 97% 30.34 in 10.0 mi Calm Calm - N/A   Clear
4:56 AM 46.9 °F 46.0 °F 97% 30.34 in 10.0 mi Calm Calm - N/A   Clear
5:56 AM 46.9 °F 46.0 °F 97% 30.35 in 10.0 mi Calm Calm - N/A   Clear
6:56 AM 46.9 °F 45.0 °F 93% 30.35 in 10.0 mi Calm Calm - N/A   Clear
7:56 AM 48.9 °F 46.9 °F 93% 30.37 in 10.0 mi Calm Calm - N/A   Clear
8:56 AM 62.1 °F 52.0 °F 70% 30.38 in 10.0 mi South 3.5 mph - N/A   Clear
9:56 AM 66.0 °F 52.0 °F 60% 30.38 in 10.0 mi WSW 6.9 mph - N/A   Clear
10:56 AM 68.0 °F 53.1 °F 59% 30.37 in 10.0 mi WSW 5.8 mph - N/A   Clear
11:56 AM 72.0 °F 52.0 °F 49% 30.35 in 10.0 mi Calm Calm - N/A   Clear
12:56 PM 75.0 °F 50.0 °F 41% 30.33 in 10.0 mi WSW 8.1 mph - N/A   Clear
1:56 PM 75.9 °F 51.1 °F 42% 30.30 in 10.0 mi SSE 5.8 mph - N/A   Clear
2:56 PM 77.0 °F 51.1 °F 40% 30.28 in 10.0 mi SW 8.1 mph - N/A   Clear
3:56 PM 75.9 °F 50.0 °F 40% 30.27 in 10.0 mi Variable 4.6 mph - N/A   Clear
4:56 PM 79.0 °F 51.1 °F 38% 30.26 in 10.0 mi South 6.9 mph - N/A   Clear
5:56 PM 75.9 °F 53.1 °F 45% 30.26 in 10.0 mi SSE 5.8 mph - N/A   Clear
6:56 PM 75.0 °F 53.1 °F 46% 30.27 in 10.0 mi South 3.5 mph - N/A   Clear
7:56 PM 69.1 °F 53.1 °F 57% 30.27 in 10.0 mi South 3.5 mph - N/A   Clear
8:56 PM 61.0 °F 55.0 °F 81% 30.29 in 10.0 mi Calm Calm - N/A   Clear
9:56 PM 59.0 °F 54.0 °F 83% 30.29 in 10.0 mi Calm Calm - N/A   Clear
10:56 PM 59.0 °F 54.0 °F 83% 30.29 in 10.0 mi SE 3.5 mph - N/A   Clear
11:56 PM 57.0 °F 54.0 °F 89% 30.28 in 10.0 mi Calm Calm - N/A   Clear