Weather History for Groton, CT

Change the Weather History Date:

Tuesday, May 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 63 °F -  
Max Temperature 72 °F 68 °F 83 °F (1962)
Min Temperature 55 °F 49 °F 37 °F (2002)
Degree Days  
Heating Degree Days 2    
Growing Degree Days 13 (Base 50)    
Moisture  
Dew Point 57 °F    
Average Humidity 89    
Maximum Humidity 97    
Minimum Humidity 70    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.93 in    
Wind  
Wind Speed 5 mph (SSE)    
Max Wind Speed 12 mph    
Max Gust Speed 18 mph    
Visibility 2 miles    
Events Fog    
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

Search for Another Location

Airport:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

May. 21, 2013 Rise Set
Actual Time 5:24 AM EDT 8:06 PM EDT
Civil Twilight 4:51 AM EDT 8:38 PM EDT
Nautical Twilight 4:11 AM EDT 9:18 PM EDT
Astronomical Twilight 3:25 AM EDT 10:04 PM EDT
Moon 4:14 PM EDT (5/21) 2:52 AM EDT (5/21)
Length of Visible Light 15h 46m
Length of Day
14h 42m
Waxing Gibbous, 84% of the Moon is Illuminated
May 21
Waxing Gibbous
May 25
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 64.0 °F 61.0 °F 90% 29.97 in 5.0 mi WSW 4.6 mph - N/A   Clear
1:15 AM 57.2 °F 55.4 °F 94% 29.96 in 2.0 mi SSE 4.6 mph - N/A   Clear
1:29 AM 57.2 °F 55.4 °F 94% 29.96 in 1.8 mi SSE 4.6 mph - N/A   Partly Cloudy
1:32 AM 57.2 °F 55.4 °F 94% 29.97 in 0.8 mi SSE 4.6 mph - N/A   Mist
1:39 AM 57.2 °F 55.4 °F 94% 29.96 in 0.2 mi SSE 3.5 mph - N/A Fog Fog
1:51 AM 55.4 °F 53.6 °F 94% 29.96 in 0.5 mi SSE 3.5 mph - N/A Fog Fog
1:56 AM 55.9 °F 54.0 °F 93% 29.96 in 0.5 mi South 4.6 mph - N/A Fog Fog
2:08 AM 55.4 °F 53.6 °F 94% 29.96 in 0.2 mi SSE 3.5 mph - N/A Fog Fog
2:17 AM 55.4 °F 53.6 °F 94% 29.96 in 0.2 mi Calm Calm - N/A Fog Fog
2:34 AM 55.4 °F 53.6 °F 94% 29.95 in 3.0 mi Calm Calm - N/A   Mostly Cloudy
2:56 AM 55.9 °F 53.1 °F 90% 29.94 in 4.0 mi Calm Calm - N/A   Mostly Cloudy
3:07 AM 55.4 °F 53.6 °F 94% 29.93 in 2.5 mi SSE 3.5 mph - N/A   Overcast
3:10 AM 55.4 °F 53.6 °F 94% 29.93 in 1.0 mi Calm Calm - N/A   Mist
3:17 AM 55.4 °F 53.6 °F 94% 29.93 in 0.5 mi South 4.6 mph - N/A Fog Fog
3:24 AM 55.4 °F 53.6 °F 94% 29.93 in 0.2 mi South 5.8 mph - N/A Fog Fog
3:31 AM 55.4 °F 53.6 °F 94% 29.93 in 0.2 mi SSW 3.5 mph - N/A Fog Fog
3:56 AM 57.0 °F 55.0 °F 93% 29.94 in 0.2 mi Calm Calm - N/A Fog Fog
4:56 AM 57.0 °F 55.9 °F 96% 29.94 in 0.2 mi Calm Calm - N/A Fog Fog
5:13 AM 57.2 °F 55.4 °F 94% 29.95 in 0.2 mi Calm Calm - N/A Fog Fog
5:56 AM 55.9 °F 55.0 °F 97% 29.96 in 0.2 mi South 3.5 mph - N/A Fog Fog
6:56 AM 57.0 °F 55.9 °F 96% 29.96 in 0.2 mi Calm Calm - N/A Fog Fog
7:56 AM 57.9 °F 55.9 °F 93% 29.94 in 0.2 mi South 4.6 mph - N/A Fog Fog
8:56 AM 61.0 °F 60.1 °F 97% 29.96 in 0.2 mi South 3.5 mph - N/A Fog Fog
9:19 AM 60.8 °F 57.2 °F 88% 29.96 in 0.2 mi South 5.8 mph - N/A Fog Fog
9:27 AM 60.8 °F 57.2 °F 88% 29.96 in 1.0 mi South 4.6 mph - N/A   Overcast
9:36 AM 60.8 °F 59.0 °F 94% 29.95 in 2.0 mi South 5.8 mph - N/A   Mostly Cloudy
9:45 AM 62.6 °F 60.8 °F 94% 29.95 in 0.8 mi South 5.8 mph - N/A   Overcast
9:56 AM 63.0 °F 60.1 °F 90% 29.95 in 1.2 mi South 5.8 mph - N/A   Mostly Cloudy
10:01 AM 64.4 °F 60.8 °F 88% 29.96 in 3.0 mi SSW 5.8 mph - N/A   Mostly Cloudy
10:05 AM 64.4 °F 60.8 °F 88% 29.96 in 2.0 mi SSW 5.8 mph - N/A   Scattered Clouds
10:30 AM 68.0 °F 60.8 °F 78% 29.94 in 3.0 mi South 6.9 mph - N/A   Haze
10:56 AM 68.0 °F 61.0 °F 78% 29.94 in 3.0 mi SSW 6.9 mph - N/A   Haze
11:56 AM 71.1 °F 63.0 °F 75% 29.92 in 4.0 mi SSW 9.2 mph - N/A   Haze
12:56 PM 69.1 °F 60.1 °F 73% 29.91 in 5.0 mi South 10.4 mph - N/A   Haze
1:56 PM 69.1 °F 60.1 °F 73% 29.90 in 5.0 mi South 6.9 mph - N/A   Haze
2:56 PM 69.1 °F 59.0 °F 70% 29.89 in 6.0 mi South 8.1 mph - N/A   Haze
3:56 PM 70.0 °F 61.0 °F 73% 29.87 in 6.0 mi SW 8.1 mph - N/A   Haze
4:56 PM 71.1 °F 61.0 °F 70% 29.86 in 6.0 mi Variable 4.6 mph - N/A   Haze
5:56 PM 71.1 °F 62.1 °F 73% 29.86 in 7.0 mi SW 8.1 mph - N/A   Clear
6:56 PM 64.9 °F 59.0 °F 81% 29.89 in 7.0 mi SSW 5.8 mph - N/A   Clear
7:56 PM 66.9 °F 60.1 °F 79% 29.92 in 6.0 mi SE 4.6 mph - N/A   Haze
8:56 PM 63.0 °F 57.9 °F 84% 29.92 in 6.0 mi East 6.9 mph - N/A   Haze
9:41 PM 60.8 °F 57.2 °F 88% 29.91 in 4.0 mi ESE 8.1 mph - N/A   Scattered Clouds
9:49 PM 59.0 °F 57.2 °F 94% 29.92 in 2.5 mi ESE 6.9 mph - N/A   Mostly Cloudy
9:54 PM 57.2 °F 55.4 °F 94% 29.91 in 0.8 mi SE 5.8 mph - N/A   Mist
9:56 PM 57.9 °F 55.9 °F 93% 29.91 in 0.5 mi SE 8.1 mph - N/A Fog Fog
10:00 PM 57.2 °F 55.4 °F 94% 29.91 in 0.2 mi SE 9.2 mph - N/A Fog Fog
10:07 PM 59.0 °F 55.4 °F 88% 29.91 in 0.2 mi SE 10.4 mph - N/A Fog Fog
10:20 PM 59.0 °F 57.2 °F 94% 29.93 in 0.5 mi East 6.9 mph - N/A Fog Fog
10:28 PM 59.0 °F 57.2 °F 94% 29.93 in 2.0 mi East 9.2 mph - N/A   Overcast
10:36 PM 59.0 °F 55.4 °F 88% 29.92 in 5.0 mi East 6.9 mph - N/A   Overcast
10:47 PM 59.0 °F 55.4 °F 88% 29.91 in 6.0 mi ESE 11.5 mph 18.4 mph N/A   Overcast
10:56 PM 59.0 °F 55.9 °F 90% 29.91 in 6.0 mi East 11.5 mph - N/A   Overcast
11:56 PM 61.0 °F 57.0 °F 87% 29.93 in 6.0 mi ENE 8.1 mph - N/A   Overcast