Weather History for Gaithersburg, MD

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Sunday, August 31, 2014

  Actual Average (KCGS) Record (KCGS)
Temperature  
Mean Temperature 80 °F -  
Max Temperature 89 °F 86 °F 98 °F (1962)
Min Temperature 71 °F 64 °F 46 °F (1986)
Cooling Degree Days 15    
Growing Degree Days 30 (Base 50)    
Moisture  
Dew Point 71 °F    
Average Humidity 80    
Maximum Humidity 94    
Minimum Humidity 52    
Precipitation  
Precipitation 0.08 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.11 in    
Wind  
Wind Speed 6 mph (SSW)    
Max Wind Speed 13 mph    
Max Gust Speed 20 mph    
Visibility 9 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

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Date:

Astronomy

Aug. 31, 2014 Rise Set
Actual Time 6:36 AM EDT 7:40 PM EDT
Civil Twilight 6:08 AM EDT 8:08 PM EDT
Nautical Twilight 5:36 AM EDT 8:40 PM EDT
Astronomical Twilight 5:01 AM EDT 9:14 PM EDT
Moon 12:18 PM EDT (8/31) 10:57 PM EDT (8/31)
Length of Visible Light 13h 59m
Length of Day
13h 04m
Waxing Crescent, 32% of the Moon is Illuminated
Aug 31
Waxing Crescent
Sep 2
First Quarter
Sep 8
Full
Sep 15
Last Quarter
Sep 24
New

Hourly Weather History & Observations

Time (EDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 73.4 °F - 69.8 °F 88% 30.18 in 10.0 mi SE 6.9 mph - N/A   Mostly Cloudy
12:35 AM 73.4 °F - 69.8 °F 88% 30.18 in 10.0 mi SE 6.9 mph - N/A   Mostly Cloudy
12:55 AM 73.4 °F - 69.8 °F 88% 30.18 in 10.0 mi SE 6.9 mph - N/A   Mostly Cloudy
1:15 AM 73.4 °F - 69.8 °F 88% 30.17 in 10.0 mi SSE 6.9 mph - N/A   Mostly Cloudy
1:35 AM 73.4 °F - 69.8 °F 88% 30.17 in 10.0 mi SSE 6.9 mph - N/A   Mostly Cloudy
1:55 AM 73.4 °F - 69.8 °F 88% 30.17 in 10.0 mi SSE 4.6 mph - N/A   Scattered Clouds
2:15 AM 73.4 °F - 69.8 °F 88% 30.16 in 10.0 mi SSE 5.8 mph - N/A   Clear
2:35 AM 73.4 °F - 69.8 °F 88% 30.16 in 10.0 mi SSE 4.6 mph - N/A   Clear
2:55 AM 73.4 °F - 69.8 °F 88% 30.16 in 10.0 mi SSE 4.6 mph - N/A   Clear
3:15 AM 73.4 °F - 69.8 °F 88% 30.16 in 10.0 mi SSE 4.6 mph - N/A   Partly Cloudy
3:35 AM 73.4 °F - 69.8 °F 88% 30.16 in 8.0 mi SSE 5.8 mph - N/A   Partly Cloudy
3:55 AM 73.4 °F - 69.8 °F 88% 30.15 in 7.0 mi SSE 5.8 mph - N/A   Scattered Clouds
4:15 AM 73.4 °F - 71.6 °F 94% 30.14 in 7.0 mi SSE 5.8 mph - N/A   Partly Cloudy
4:35 AM 73.4 °F - 69.8 °F 88% 30.14 in 7.0 mi SSE 3.5 mph - N/A   Clear
4:55 AM 73.4 °F - 71.6 °F 94% 30.14 in 7.0 mi SSE 4.6 mph - N/A   Scattered Clouds
5:15 AM 73.4 °F - 69.8 °F 88% 30.14 in 6.0 mi SSE 3.5 mph - N/A   Mostly Cloudy
5:35 AM 73.4 °F - 71.6 °F 94% 30.14 in 6.0 mi SSE 5.8 mph - N/A   Scattered Clouds
5:55 AM 73.4 °F - 69.8 °F 88% 30.14 in 6.0 mi SSE 4.6 mph - N/A   Partly Cloudy
6:15 AM 73.4 °F - 69.8 °F 88% 30.15 in 6.0 mi SSE 4.6 mph - N/A   Partly Cloudy
6:35 AM 73.4 °F - 69.8 °F 88% 30.15 in 5.0 mi SSE 5.8 mph - N/A   Mostly Cloudy
6:55 AM 73.4 °F - 71.6 °F 94% 30.15 in 4.0 mi South 3.5 mph - N/A   Overcast
7:15 AM 73.4 °F - 71.6 °F 94% 30.15 in 4.0 mi SSE 3.5 mph - N/A   Overcast
7:35 AM 73.4 °F - 71.6 °F 94% 30.15 in 5.0 mi South 3.5 mph - N/A   Overcast
7:55 AM 73.4 °F - 71.6 °F 94% 30.15 in 6.0 mi South 3.5 mph - N/A   Overcast
8:15 AM 73.4 °F - 71.6 °F 94% 30.16 in 8.0 mi SSW 3.5 mph - N/A   Overcast
8:35 AM 75.2 °F - 71.6 °F 89% 30.16 in 10.0 mi SSW 3.5 mph - N/A   Overcast
8:55 AM 75.2 °F - 71.6 °F 89% 30.15 in 10.0 mi SSW 6.9 mph - N/A   Overcast
9:15 AM 77.0 °F - 71.6 °F 83% 30.15 in 10.0 mi WSW 6.9 mph - N/A   Mostly Cloudy
9:35 AM 78.8 °F - 73.4 °F 83% 30.15 in 10.0 mi SSW 6.9 mph - N/A   Mostly Cloudy
9:55 AM 78.8 °F - 73.4 °F 83% 30.14 in 10.0 mi SSW 4.6 mph - N/A   Partly Cloudy
10:15 AM 80.6 °F 85.4 °F 73.4 °F 79% 30.13 in 10.0 mi SSW 3.5 mph - N/A   Clear
10:35 AM 82.4 °F 88.2 °F 73.4 °F 74% 30.12 in 10.0 mi SSW 4.6 mph - N/A   Clear
10:55 AM 84.2 °F 90.9 °F 73.4 °F 70% 30.12 in 10.0 mi SSW 6.9 mph - N/A   Partly Cloudy
11:15 AM 84.2 °F 90.9 °F 73.4 °F 70% 30.12 in 10.0 mi South 6.9 mph - N/A   Partly Cloudy
11:35 AM 84.2 °F 90.9 °F 73.4 °F 70% 30.12 in 10.0 mi SSW 4.6 mph - N/A   Partly Cloudy
11:55 AM 84.2 °F 90.9 °F 73.4 °F 70% 30.11 in 10.0 mi South 6.9 mph - N/A   Partly Cloudy
12:15 PM 87.8 °F 95.6 °F 73.4 °F 62% 30.11 in 10.0 mi SSW 6.9 mph - N/A   Partly Cloudy
12:35 PM 86.0 °F 91.8 °F 71.6 °F 62% 30.10 in 10.0 mi West 6.9 mph - N/A   Scattered Clouds
12:55 PM 86.0 °F 93.4 °F 73.4 °F 66% 30.10 in 10.0 mi West 4.6 mph - N/A   Mostly Cloudy
1:15 PM 89.6 °F 98.2 °F 73.4 °F 59% 30.09 in 10.0 mi SSW 5.8 mph - N/A   Scattered Clouds
1:35 PM 87.8 °F 95.6 °F 73.4 °F 62% 30.09 in 10.0 mi SW 5.8 mph - N/A   Scattered Clouds
1:55 PM 87.8 °F 93.8 °F 71.6 °F 58% 30.08 in 10.0 mi SSW 6.9 mph - N/A   Mostly Cloudy
2:15 PM 87.8 °F 93.8 °F 71.6 °F 58% 30.08 in 10.0 mi SW 8.1 mph - N/A   Scattered Clouds
2:35 PM 87.8 °F 92.6 °F 69.8 °F 55% 30.07 in 10.0 mi SSW 6.9 mph - N/A   Mostly Cloudy
2:55 PM 89.6 °F 96.2 °F 71.6 °F 55% 30.06 in 10.0 mi WSW 6.9 mph - N/A   Mostly Cloudy
3:15 PM 89.6 °F 96.2 °F 71.6 °F 55% 30.05 in 10.0 mi WSW 12.7 mph 19.6 mph N/A   Scattered Clouds
3:35 PM 89.6 °F 94.7 °F 69.8 °F 52% 30.04 in 10.0 mi SW 5.8 mph 16.1 mph N/A   Partly Cloudy
3:55 PM 89.6 °F 94.7 °F 69.8 °F 52% 30.03 in 10.0 mi WSW 5.8 mph - N/A   Partly Cloudy
4:15 PM 89.6 °F 94.7 °F 69.8 °F 52% 30.03 in 10.0 mi WSW 8.1 mph - N/A   Scattered Clouds
4:35 PM 89.6 °F 94.7 °F 69.8 °F 52% 30.03 in 10.0 mi WSW 9.2 mph - N/A   Clear
4:55 PM 87.8 °F 91.4 °F 68.0 °F 52% 30.05 in 10.0 mi NW 12.7 mph 18.4 mph N/A   Partly Cloudy
5:15 PM 78.8 °F - 68.0 °F 69% 30.06 in 10.0 mi NW 6.9 mph - N/A   Mostly Cloudy
5:35 PM 77.0 °F - 66.2 °F 69% 30.06 in 10.0 mi NW 3.5 mph - N/A   Mostly Cloudy
5:55 PM 77.0 °F - 66.2 °F 69% 30.04 in 10.0 mi NE 3.5 mph - N/A   Scattered Clouds
6:15 PM 75.2 °F - 68.0 °F 78% 30.07 in 8.0 mi WSW 6.9 mph - N/A Thunderstorm Mostly Cloudy
6:35 PM 73.4 °F - 69.8 °F 88% 30.07 in 10.0 mi SSE 6.9 mph - 0.07 in Thunderstorm Overcast
6:55 PM 73.4 °F - 71.6 °F 94% 30.07 in 10.0 mi SSE 4.6 mph - 0.07 in   Mostly Cloudy
7:15 PM 73.4 °F - 69.8 °F 88% 30.06 in 10.0 mi SSE 6.9 mph - N/A Thunderstorm Partly Cloudy
7:35 PM 73.4 °F - 69.8 °F 88% 30.07 in 10.0 mi SSE 3.5 mph - N/A   Clear
7:55 PM 73.4 °F - 69.8 °F 88% 30.07 in 5.0 mi Calm Calm - N/A   Scattered Clouds
8:15 PM 71.6 °F - 69.8 °F 94% 30.07 in 2.5 mi Calm Calm - N/A   Clear
8:35 PM 73.4 °F - 69.8 °F 88% 30.07 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:55 PM 73.4 °F - 69.8 °F 88% 30.07 in 10.0 mi WNW 3.5 mph - N/A   Partly Cloudy
9:15 PM 73.4 °F - 69.8 °F 88% 30.08 in 10.0 mi NW 3.5 mph - N/A   Partly Cloudy
9:35 PM 73.4 °F - 69.8 °F 88% 30.08 in 10.0 mi NW 3.5 mph - N/A   Mostly Cloudy
10:15 PM 73.4 °F - 69.8 °F 88% 30.09 in 10.0 mi SW 3.5 mph - N/A   Mostly Cloudy
10:35 PM 73.4 °F - 69.8 °F 88% 30.09 in 10.0 mi West 3.5 mph - N/A   Overcast
10:55 PM 73.4 °F - 69.8 °F 88% 30.09 in 10.0 mi Calm Calm - 0.01 in   Overcast
11:15 PM 73.4 °F - 69.8 °F 88% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
11:35 PM 71.6 °F - 69.8 °F 94% 30.08 in 9.0 mi Calm Calm - N/A   Overcast
11:55 PM 71.6 °F - 69.8 °F 94% 30.07 in 9.0 mi Calm Calm - N/A   Scattered Clouds