Gaithersburg, MD

10:47 PM EST on November 11, 2019 (GMT -0500)
Montgomery County

Weather History for KGAI - September, 2019

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Monday, September 2, 2019

  Actual Average (KCGS) Record (KCGS)
Temperature  
Mean Temperature 78 °F -  
Max Temperature 87 °F 82 °F 102 °F (1953)
Min Temperature 69 °F 63 °F 32 °F (2006)
Cooling Degree Days 13    
Growing Degree Days 28 (Base 50)    
Moisture  
Dew Point 68 °F    
Average Humidity 82    
Maximum Humidity 97    
Minimum Humidity 55    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.10 in    
Wind  
Wind Speed 6 mph (South)    
Max Wind Speed 12 mph    
Max Gust Speed 20 mph    
Visibility 10 miles    
Events Thunderstorm    
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. 02, 2019 Rise Set
Actual Time 6:38 AM EDT 7:38 PM EDT
Civil Twilight 6:10 AM EDT 8:05 PM EDT
Nautical Twilight 5:38 AM EDT 8:37 PM EDT
Astronomical Twilight 5:04 AM EDT 9:11 PM EDT
Moon 10:16 AM EDT (9/2) 10:00 PM EDT (9/2)
Length of Visible Light 13h 54m
Length of Day
13h 00m
Waxing Crescent, 15% of the Moon is Illuminated
Sep 2
Waxing Crescent
Sep 5
First Quarter
Sep 14
Full
Sep 21
Last Quarter
Sep 28
New

Hourly Weather History & Observations

Time (EDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:13 AM 71.6 °F - 66.2 °F 83% 30.18 in 10.0 mi ESE 8.1 mph - N/A   Mostly Cloudy
12:46 AM 69.8 °F - 66.2 °F 88% 30.18 in 10.0 mi SE 5.8 mph - N/A   Mostly Cloudy
12:56 AM 70.0 °F - 66.9 °F 90% 30.21 in 10.0 mi ESE 8.1 mph - N/A   Overcast
1:37 AM 69.8 °F - 66.2 °F 88% 30.18 in 10.0 mi SE 5.8 mph - N/A   Mostly Cloudy
1:56 AM 70.0 °F - 66.9 °F 90% 30.20 in 10.0 mi SE 8.1 mph - N/A   Overcast
2:29 AM 69.8 °F - 66.2 °F 88% 30.16 in 10.0 mi SE 6.9 mph - N/A   Overcast
2:56 AM 69.1 °F - 68.0 °F 96% 30.18 in 10.0 mi SE 6.9 mph - N/A   Overcast
3:14 AM 69.8 °F - 68.0 °F 94% 30.13 in 10.0 mi SE 10.4 mph - N/A   Overcast
3:56 AM 70.0 °F - 68.0 °F 93% 30.14 in 10.0 mi SE 6.9 mph - N/A   Overcast
4:56 AM 71.1 °F - 69.1 °F 93% 30.15 in 10.0 mi South 4.6 mph - N/A   Overcast
5:56 AM 72.0 °F - 69.1 °F 91% 30.15 in 10.0 mi South 4.6 mph - N/A   Overcast
6:56 AM 72.0 °F - 69.1 °F 91% 30.16 in 10.0 mi Variable 3.5 mph - N/A   Overcast
7:48 AM 71.6 °F - 69.8 °F 94% 30.13 in 10.0 mi SW 4.6 mph - N/A   Mostly Cloudy
7:56 AM 72.0 °F - 69.1 °F 91% 30.16 in 10.0 mi Variable 3.5 mph - N/A   Overcast
8:56 AM 73.9 °F - 68.0 °F 82% 30.15 in 10.0 mi SSW 5.8 mph - N/A   Overcast
9:56 AM 73.9 °F - 69.1 °F 85% 30.13 in 10.0 mi SW 4.6 mph - N/A   Overcast
10:56 AM 75.9 °F - 69.1 °F 79% 30.12 in 10.0 mi South 5.8 mph - N/A   Mostly Cloudy
11:54 AM 78.8 °F - 69.8 °F 74% 30.08 in 10.0 mi SW 6.9 mph - N/A   Scattered Clouds
11:56 AM 79.0 °F - 69.1 °F 72% 30.10 in 9.0 mi SW 6.9 mph - N/A   Scattered Clouds
12:56 PM 82.9 °F 87.0 °F 70.0 °F 65% 30.08 in 10.0 mi South 6.9 mph - N/A   Scattered Clouds
1:56 PM 84.0 °F 88.4 °F 70.0 °F 63% 30.06 in 10.0 mi SSW 8.1 mph - N/A   Clear
2:56 PM 87.1 °F 91.3 °F 69.1 °F 55% 30.03 in 10.0 mi WSW 6.9 mph - N/A   Partly Cloudy
3:56 PM 86.0 °F 90.1 °F 69.1 °F 57% 30.01 in 10.0 mi Variable 4.6 mph - N/A   Clear
4:56 PM 80.1 °F 83.6 °F 71.1 °F 74% 30.00 in 10.0 mi Calm Calm - N/A   Scattered Clouds
5:18 PM 80.6 °F 83.2 °F 68.0 °F 65% 29.99 in 10.0 mi SW 11.5 mph 19.6 mph N/A Thunderstorm Thunderstorm
5:35 PM 75.2 °F - 64.4 °F 69% 29.99 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
5:56 PM 79.0 °F - 66.9 °F 66% 30.02 in 10.0 mi SSE 4.6 mph - N/A   Partly Cloudy
6:56 PM 75.0 °F - 69.1 °F 82% 30.02 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:56 PM 75.0 °F - 70.0 °F 84% 30.04 in 9.0 mi West 4.6 mph - N/A   Mostly Cloudy
8:56 PM 72.0 °F - 71.1 °F 97% 30.05 in 10.0 mi WNW 3.5 mph - N/A   Scattered Clouds
9:56 PM 71.1 °F - 68.0 °F 90% 30.07 in 10.0 mi Calm Calm - N/A   Scattered Clouds
10:56 PM 71.1 °F - 68.0 °F 90% 30.08 in 10.0 mi Calm Calm - N/A   Partly Cloudy
11:56 PM 69.1 °F - 66.9 °F 93% 30.08 in 10.0 mi Calm Calm - N/A   Scattered Clouds