Gaithersburg, MD

9:52 AM EST on November 15, 2019 (GMT -0500)
Montgomery County

Weather History for KGAI - September, 2019

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Friday, September 27, 2019

  Actual Average (KCGS) Record (KCGS)
Temperature  
Mean Temperature 68 °F -  
Max Temperature 82 °F 76 °F 95 °F (1986)
Min Temperature 53 °F 55 °F 38 °F (1957)
Cooling Degree Days 2    
Growing Degree Days 18 (Base 50)    
Moisture  
Dew Point 55 °F    
Average Humidity 68    
Maximum Humidity 97    
Minimum Humidity 39    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.13 in    
Wind  
Wind Speed 2 mph (SE)    
Max Wind Speed 12 mph    
Max Gust Speed 17 mph    
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. 27, 2019 Rise Set
Actual Time 7:00 AM EDT 6:58 PM EDT
Civil Twilight 6:34 AM EDT 7:24 PM EDT
Nautical Twilight 6:02 AM EDT 7:55 PM EDT
Astronomical Twilight 5:31 AM EDT 8:27 PM EDT
Moon 5:20 AM EDT (9/27) 6:46 PM EDT (9/27)
Length of Visible Light 12h 50m
Length of Day
11h 57m
Waning Crescent, 2% of the Moon is Illuminated
Sep 27
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% 30.03 in 10.0 mi Calm Calm - N/A   Clear
1:56 AM 57.0 °F - 55.0 °F 93% 30.05 in 10.0 mi Calm Calm - N/A   Clear
2:56 AM 57.0 °F - 54.0 °F 89% 30.06 in 10.0 mi Calm Calm - N/A   Clear
3:56 AM 55.9 °F - 54.0 °F 93% 30.07 in 10.0 mi Calm Calm - N/A   Clear
4:56 AM 54.0 °F - 53.1 °F 97% 30.10 in 10.0 mi Calm Calm - N/A   Clear
5:56 AM 54.0 °F - 53.1 °F 97% 30.11 in 9.0 mi Calm Calm - N/A   Clear
6:56 AM 53.1 °F - 52.0 °F 96% 30.13 in 6.0 mi Calm Calm - N/A   Clear
7:56 AM 54.0 °F - 53.1 °F 97% 30.17 in 10.0 mi Calm Calm - N/A   Clear
8:56 AM 64.9 °F - 55.0 °F 70% 30.18 in 10.0 mi Variable 3.5 mph - N/A   Clear
9:56 AM 69.1 °F - 54.0 °F 58% 30.19 in 10.0 mi Variable 4.6 mph - N/A   Clear
10:56 AM 73.9 °F - 55.9 °F 53% 30.21 in 10.0 mi South 5.8 mph - N/A   Clear
11:56 AM 77.0 °F - 52.0 °F 42% 30.20 in 10.0 mi SSE 5.8 mph - N/A   Clear
12:56 PM 78.1 °F - 55.0 °F 45% 30.18 in 10.0 mi Variable 3.5 mph - N/A   Clear
1:56 PM 79.0 °F - 53.1 °F 40% 30.15 in 10.0 mi SE 5.8 mph - N/A   Clear
2:56 PM 82.0 °F 81.4 °F 55.0 °F 39% 30.13 in 7.0 mi South 11.5 mph 17.3 mph N/A   Clear
3:56 PM 80.1 °F 80.2 °F 55.9 °F 43% 30.11 in 10.0 mi South 5.8 mph - N/A   Clear
4:56 PM 80.1 °F 80.4 °F 57.0 °F 45% 30.11 in 10.0 mi SSE 8.1 mph - N/A   Clear
5:56 PM 80.1 °F 80.6 °F 57.9 °F 47% 30.12 in 10.0 mi SSE 6.9 mph - N/A   Clear
6:56 PM 73.9 °F - 57.9 °F 57% 30.14 in 10.0 mi ESE 4.6 mph - N/A   Partly Cloudy
7:56 PM 70.0 °F - 59.0 °F 68% 30.15 in 10.0 mi Calm Calm - N/A   Partly Cloudy
8:56 PM 68.0 °F - 59.0 °F 73% 30.17 in 10.0 mi ESE 4.6 mph - N/A   Clear
9:56 PM 68.0 °F - 57.9 °F 70% 30.15 in 10.0 mi SE 8.1 mph - N/A   Clear
10:56 PM 68.0 °F - 57.9 °F 70% 30.15 in 10.0 mi SE 10.4 mph - N/A   Clear
11:56 PM 66.9 °F - 57.9 °F 73% 30.15 in 10.0 mi SE 4.6 mph - N/A   Clear