Gaithersburg, MD

8:33 AM EST on November 21, 2019 (GMT -0500)
Montgomery County

Weather History for KGAI - September, 2019

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Thursday, September 26, 2019

  Actual Average (KCGS) Record (KCGS)
Temperature  
Mean Temperature 70 °F -  
Max Temperature 86 °F 74 °F 95 °F (1970)
Min Temperature 57 °F 54 °F 39 °F (1967)
Cooling Degree Days 6    
Growing Degree Days 20 (Base 50)    
Moisture  
Dew Point 58 °F    
Average Humidity 73    
Maximum Humidity 96    
Minimum Humidity 44    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.89 in    
Wind  
Wind Speed 2 mph (West)    
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. 26, 2019 Rise Set
Actual Time 6:59 AM EDT 6:59 PM EDT
Civil Twilight 6:33 AM EDT 7:26 PM EDT
Nautical Twilight 6:01 AM EDT 7:57 PM EDT
Astronomical Twilight 5:30 AM EDT 8:28 PM EDT
Moon 4:05 AM EDT (9/26) 6:09 PM EDT (9/26)
Length of Visible Light 12h 53m
Length of Day
11h 59m
Waning Crescent, 7% of the Moon is Illuminated
Sep 26
Waning Crescent
Sep 28
New
Oct 5
First Quarter
Oct 13
Full
Oct 21
Last 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 60.1 °F - 55.0 °F 83% 29.92 in 10.0 mi Calm Calm - N/A   Clear
1:56 AM 59.0 °F - 55.0 °F 87% 29.91 in 10.0 mi Calm Calm - N/A   Clear
2:56 AM 59.0 °F - 55.9 °F 90% 29.89 in 10.0 mi Calm Calm - N/A   Clear
3:56 AM 59.0 °F - 55.9 °F 90% 29.88 in 10.0 mi Calm Calm - N/A   Clear
4:56 AM 57.9 °F - 55.9 °F 93% 29.87 in 10.0 mi Calm Calm - N/A   Clear
5:56 AM 57.0 °F - 55.0 °F 93% 29.87 in 10.0 mi Calm Calm - N/A   Clear
6:56 AM 57.0 °F - 55.9 °F 96% 29.86 in 10.0 mi Calm Calm - N/A   Clear
7:56 AM 57.9 °F - 55.9 °F 93% 29.88 in 10.0 mi Calm Calm - N/A   Clear
8:56 AM 64.9 °F - 59.0 °F 81% 29.88 in 10.0 mi Calm Calm - N/A   Scattered Clouds
9:56 AM 72.0 °F - 60.1 °F 66% 29.88 in 10.0 mi SSW 3.5 mph - N/A   Clear
10:56 AM 78.1 °F - 61.0 °F 56% 29.86 in 10.0 mi WSW 4.6 mph - N/A   Clear
11:56 AM 80.1 °F 80.9 °F 60.1 °F 50% 29.86 in 10.0 mi Variable 4.6 mph - N/A   Overcast
12:56 PM 84.9 °F 85.0 °F 61.0 °F 44% 29.84 in 10.0 mi SSW 5.8 mph - N/A   Mostly Cloudy
1:56 PM 82.0 °F 83.1 °F 63.0 °F 52% 29.84 in 10.0 mi West 6.9 mph - N/A   Mostly Cloudy
2:56 PM 82.9 °F 83.7 °F 62.1 °F 49% 29.83 in 10.0 mi NW 6.9 mph - N/A   Overcast
3:56 PM 79.0 °F - 62.1 °F 56% 29.85 in 10.0 mi NW 8.1 mph - N/A   Overcast
4:56 PM 79.0 °F - 63.0 °F 58% 29.86 in 10.0 mi Variable 5.8 mph - N/A   Overcast
5:56 PM 79.0 °F - 59.0 °F 50% 29.87 in 10.0 mi NW 9.2 mph - N/A   Clear
6:56 PM 75.0 °F - 59.0 °F 57% 29.90 in 10.0 mi Calm Calm - N/A   Clear
7:56 PM 70.0 °F - 60.1 °F 71% 29.94 in 10.0 mi Calm Calm - N/A   Clear
8:56 PM 64.9 °F - 59.0 °F 81% 29.96 in 10.0 mi Calm Calm - N/A   Clear
9:56 PM 63.0 °F - 57.0 °F 81% 29.99 in 10.0 mi Calm Calm - N/A   Clear
10:56 PM 60.1 °F - 57.0 °F 90% 30.01 in 10.0 mi Calm Calm - N/A   Clear
11:56 PM 61.0 °F - 55.9 °F 83% 30.02 in 10.0 mi Calm Calm - N/A   Clear