Gaithersburg, MD

3:42 PM EST on November 15, 2019 (GMT -0500)
Montgomery County

Weather History for KGAI - September, 2019

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Sunday, September 29, 2019

  Actual Average (KCGS) Record (KCGS)
Temperature  
Mean Temperature 75 °F -  
Max Temperature 86 °F 73 °F 93 °F (1954)
Min Temperature 66 °F 52 °F 35 °F (1951)
Cooling Degree Days 10    
Growing Degree Days 25 (Base 50)    
Moisture  
Dew Point 65 °F    
Average Humidity 74    
Maximum Humidity 96    
Minimum Humidity 53    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.25 in    
Wind  
Wind Speed 1 mph (NNE)    
Max Wind Speed 5 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. 29, 2019 Rise Set
Actual Time 7:02 AM EDT 6:54 PM EDT
Civil Twilight 6:35 AM EDT 7:21 PM EDT
Nautical Twilight 6:04 AM EDT 7:52 PM EDT
Astronomical Twilight 5:33 AM EDT 8:23 PM EDT
Moon 7:50 AM EDT (9/29) 7:54 PM EDT (9/29)
Length of Visible Light 12h 45m
Length of Day
11h 52m
New Moon, 1% of the Moon is Illuminated
Sep 29
New Moon
Oct 5
First Quarter
Oct 13
Full
Oct 21
Last Quarter
Oct 27
New

Hourly Weather History & Observations

Time (EDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 70.0 °F - 68.0 °F 93% 30.16 in 10.0 mi Calm Calm - N/A   Clear
1:56 AM 69.1 °F - 66.9 °F 93% 30.17 in 10.0 mi Calm Calm - N/A   Clear
2:56 AM 68.0 °F - 66.0 °F 93% 30.17 in 10.0 mi Calm Calm - N/A   Clear
3:56 AM 66.0 °F - 64.9 °F 96% 30.19 in 10.0 mi WNW 3.5 mph - N/A   Clear
4:56 AM 69.1 °F - 66.0 °F 90% 30.19 in 10.0 mi Calm Calm - N/A   Clear
5:56 AM 66.9 °F - 64.9 °F 93% 30.21 in 10.0 mi Calm Calm - N/A   Clear
6:56 AM 68.0 °F - 64.9 °F 90% 30.23 in 10.0 mi NE 3.5 mph - N/A   Clear
7:56 AM 70.0 °F - 64.9 °F 84% 30.25 in 10.0 mi Calm Calm - N/A   Clear
8:56 AM 73.0 °F - 66.0 °F 79% 30.27 in 10.0 mi Calm Calm - N/A   Clear
9:56 AM 77.0 °F - 66.0 °F 69% 30.29 in 10.0 mi Variable 4.6 mph - N/A   Clear
10:56 AM 80.1 °F 82.1 °F 66.0 °F 62% 30.30 in 10.0 mi Variable 3.5 mph - N/A   Clear
11:56 AM 81.0 °F 83.3 °F 66.9 °F 62% 30.30 in 10.0 mi Variable 4.6 mph - N/A   Partly Cloudy
12:56 PM 84.0 °F 86.5 °F 66.9 °F 56% 30.28 in 10.0 mi Variable 3.5 mph - N/A   Partly Cloudy
1:56 PM 82.9 °F 85.0 °F 66.0 °F 56% 30.27 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:56 PM 82.9 °F 85.4 °F 66.9 °F 58% 30.26 in 10.0 mi Variable 3.5 mph - N/A   Mostly Cloudy
3:56 PM 84.0 °F 85.8 °F 64.9 °F 53% 30.25 in 10.0 mi Variable 3.5 mph - N/A   Scattered Clouds
4:56 PM 82.0 °F 83.8 °F 64.9 °F 56% 30.24 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:56 PM 80.1 °F 81.9 °F 64.9 °F 60% 30.25 in 10.0 mi Variable 4.6 mph - N/A   Clear
6:56 PM 75.9 °F - 64.9 °F 69% 30.27 in 10.0 mi Variable 3.5 mph - N/A   Clear
7:56 PM 73.9 °F - 63.0 °F 68% 30.27 in 10.0 mi Calm Calm - N/A   Clear
8:56 PM 72.0 °F - 63.0 °F 73% 30.28 in 10.0 mi Variable 3.5 mph - N/A   Clear
10:56 PM 71.1 °F - 62.1 °F 73% 30.31 in 10.0 mi Calm Calm - N/A   Partly Cloudy
11:56 PM 70.0 °F - 63.0 °F 78% 30.30 in 10.0 mi East 3.5 mph - N/A   Clear