Gaithersburg, MD

3:12 AM EST on November 15, 2019 (GMT -0500)
Montgomery County

Weather History for KGAI - September, 2019

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Saturday, September 21, 2019

  Actual Average (WUND) Record (WUND)
Temperature  
Mean Temperature 70 °F -  
Max Temperature 89 °F - - (-1)
Min Temperature 53 °F - - (-1)
Cooling Degree Days 5    
Growing Degree Days 20 (Base 50)    
Moisture  
Dew Point 59 °F    
Average Humidity 72    
Maximum Humidity 97    
Minimum Humidity 43    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.26 in    
Wind  
Wind Speed 1 mph (South)    
Max Wind Speed 7 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. 21, 2019 Rise Set
Actual Time 6:55 AM EDT 7:07 PM EDT
Civil Twilight 6:28 AM EDT 7:34 PM EDT
Nautical Twilight 5:57 AM EDT 8:05 PM EDT
Astronomical Twilight 5:25 AM EDT 8:37 PM EDT
Moon 11:46 PM EDT (9/21) 1:56 PM EDT (9/21)
Length of Visible Light 13h 05m
Length of Day
12h 12m
Waning Gibbous, 55% of the Moon is Illuminated
Sep 21
Waning Gibbous
Sep 21
Last Quarter
Sep 28
New
Oct 5
First Quarter
Oct 13
Full

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 55.9 °F - 54.0 °F 93% 30.29 in 10.0 mi Calm Calm - N/A   Clear
1:56 AM 55.9 °F - 55.0 °F 97% 30.29 in 10.0 mi Calm Calm - N/A   Clear
2:56 AM 55.9 °F - 55.0 °F 97% 30.28 in 10.0 mi Calm Calm - N/A   Clear
3:56 AM 55.0 °F - 54.0 °F 96% 30.27 in 10.0 mi Calm Calm - N/A   Clear
4:56 AM 55.0 °F - 53.1 °F 93% 30.27 in 10.0 mi Calm Calm - N/A   Clear
5:56 AM 53.1 °F - 52.0 °F 96% 30.28 in 10.0 mi Calm Calm - N/A   Clear
6:56 AM 53.1 °F - 52.0 °F 96% 30.30 in 10.0 mi Calm Calm - N/A   Clear
7:56 AM 55.0 °F - 54.0 °F 96% 30.30 in 10.0 mi Calm Calm - N/A   Clear
8:56 AM 64.9 °F - 57.9 °F 78% 30.32 in 10.0 mi Calm Calm - N/A   Clear
9:56 AM 71.1 °F - 57.9 °F 63% 30.32 in 10.0 mi West 3.5 mph - N/A   Clear
10:56 AM 75.9 °F - 59.0 °F 56% 30.30 in 10.0 mi Variable 3.5 mph - N/A   Clear
11:56 AM 82.0 °F 82.4 °F 60.1 °F 47% 30.29 in 10.0 mi Calm Calm - N/A   Clear
12:56 PM 82.0 °F 82.4 °F 60.1 °F 47% 30.27 in 10.0 mi West 4.6 mph - N/A   Clear
1:56 PM 84.9 °F 85.4 °F 62.1 °F 46% 30.25 in 10.0 mi Variable 4.6 mph - N/A   Clear
2:56 PM 86.0 °F 86.3 °F 62.1 °F 44% 30.23 in 10.0 mi SSW 4.6 mph - N/A   Clear
3:56 PM 87.1 °F 87.5 °F 62.1 °F 43% 30.21 in 10.0 mi Variable 3.5 mph - N/A   Clear
4:56 PM 87.1 °F 87.8 °F 63.0 °F 44% 30.21 in 10.0 mi SSE 6.9 mph - N/A   Clear
5:56 PM 82.9 °F 84.4 °F 64.0 °F 53% 30.21 in 10.0 mi Variable 3.5 mph - N/A   Clear
6:56 PM 77.0 °F - 63.0 °F 62% 30.22 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:56 PM 75.0 °F - 64.0 °F 69% 30.22 in 10.0 mi ESE 4.6 mph - N/A   Clear
8:56 PM 72.0 °F - 63.0 °F 73% 30.23 in 10.0 mi Variable 3.5 mph - N/A   Mostly Cloudy
9:56 PM 72.0 °F - 63.0 °F 73% 30.24 in 10.0 mi SE 3.5 mph - N/A   Scattered Clouds
10:56 PM 70.0 °F - 64.0 °F 81% 30.24 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
11:56 PM 68.0 °F - 64.0 °F 87% 30.25 in 10.0 mi Calm Calm - N/A   Scattered Clouds