Weather History for Portland, ME

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Saturday, July 20, 2013

  Actual Average Record
Temperature  
Mean Temperature 81 °F 70 °F  
Max Temperature 91 °F 79 °F 96 °F (1949)
Min Temperature 70 °F 60 °F 45 °F (1943)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 5 12  
Since 1 June heating degree days 86 118  
Since 1 July heating degree days 5 12  
Cooling Degree Days 16 5  
Month to date cooling degree days 181 90  
Year to date cooling degree days 279 154  
Since 1 June cooling degree days 264 147  
Growing Degree Days 32 (Base 50)    
Moisture  
Dew Point 66 °F    
Average Humidity 66    
Maximum Humidity 84    
Minimum Humidity 47    
Precipitation  
Precipitation T in 0.12 in 1.39 in (1889)
Month to date precipitation 1.96 2.33  
Year to date precipitation 25.08 25.32  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2002)
Month to date snowfall 0.0 0.0  
Since 1 June snowfall 0.0 0.0  
Since 1 July snowfall 0.0 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.67 in    
Wind  
Wind Speed 9 mph (WSW)    
Max Wind Speed 20 mph    
Max Gust Speed 31 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jul. 20, 2013 Rise Set
Actual Time 5:18 AM EDT 8:16 PM EDT
Civil Twilight 4:44 AM EDT 8:50 PM EDT
Nautical Twilight 4:00 AM EDT 9:33 PM EDT
Astronomical Twilight 3:09 AM EDT 10:24 PM EDT
Moon 6:16 PM EDT (7/20) 2:55 AM EDT (7/20)
Length of Visible Light 16h 06m
Length of Day
14h 58m
Waxing Gibbous, 93% of the Moon is Illuminated
Jul 20
Waxing Gibbous
Jul 22
Full
Jul 29
Last Quarter
Aug 6
New
Aug 14
First Quarter

Hourly Weather History & Observations

Time (EDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:51 AM 82.0 °F 87.4 °F 73.0 °F 74% 29.69 in 9.0 mi SW 3.5 mph - N/A   Clear
1:51 AM 81.0 °F 84.4 °F 70.0 °F 69% 29.62 in 10.0 mi SSW 9.2 mph - N/A   Clear
2:51 AM 80.1 °F 81.9 °F 64.9 °F 60% 29.64 in 10.0 mi WSW 12.7 mph 20.7 mph N/A   Clear
3:51 AM 77.0 °F - 64.0 °F 64% 29.65 in 10.0 mi WSW 9.2 mph - N/A   Clear
4:51 AM 75.0 °F - 64.9 °F 71% 29.67 in 10.0 mi WSW 8.1 mph - N/A   Clear
5:51 AM 73.9 °F - 64.9 °F 73% 29.67 in 10.0 mi SW 4.6 mph - N/A   Clear
6:51 AM 75.9 °F - 64.9 °F 69% 29.68 in 10.0 mi WSW 6.9 mph - N/A   Clear
7:51 AM 79.0 °F - 66.0 °F 64% 29.70 in 10.0 mi WSW 9.2 mph - N/A   Clear
8:51 AM 82.0 °F 84.5 °F 66.9 °F 60% 29.68 in 10.0 mi WSW 6.9 mph - N/A   Clear
9:51 AM 84.0 °F 86.3 °F 66.0 °F 55% 29.68 in 10.0 mi SW 9.2 mph - N/A   Scattered Clouds
10:51 AM 84.9 °F 87.1 °F 66.0 °F 53% 29.67 in 10.0 mi WSW 12.7 mph 18.4 mph N/A   Scattered Clouds
11:51 AM 87.1 °F 89.2 °F 66.0 °F 49% 29.66 in 10.0 mi WNW 11.5 mph - N/A   Scattered Clouds
12:51 PM 89.1 °F 91.3 °F 66.0 °F 46% 29.64 in 10.0 mi WNW 11.5 mph - N/A   Partly Cloudy
1:51 PM 88.0 °F 90.3 °F 66.0 °F 48% 29.63 in 10.0 mi West 15.0 mph - N/A   Scattered Clouds
2:51 PM 87.1 °F 89.9 °F 66.9 °F 51% 29.62 in 10.0 mi WSW 9.2 mph - N/A   Partly Cloudy
3:51 PM 89.1 °F 92.9 °F 68.0 °F 50% 29.62 in 10.0 mi WSW 12.7 mph - N/A   Partly Cloudy
4:51 PM 88.0 °F 90.3 °F 66.0 °F 48% 29.62 in 10.0 mi West 15.0 mph 26.5 mph N/A   Partly Cloudy
5:51 PM 86.0 °F 88.8 °F 66.9 °F 53% 29.64 in 10.0 mi WSW 8.1 mph - N/A   Clear
6:51 PM 81.0 °F 82.5 °F 64.0 °F 56% 29.67 in 10.0 mi West 12.7 mph 21.9 mph 0.00 in   Partly Cloudy
7:51 PM 77.0 °F - 66.0 °F 69% 29.68 in 10.0 mi WNW 10.4 mph - N/A   Scattered Clouds
8:51 PM 75.9 °F - 66.9 °F 74% 29.70 in 10.0 mi West 4.6 mph - N/A   Clear
9:51 PM 75.0 °F - 68.0 °F 79% 29.73 in 10.0 mi West 8.1 mph - N/A   Clear
10:51 PM 73.9 °F - 66.9 °F 79% 29.76 in 10.0 mi West 5.8 mph - N/A   Clear
11:51 PM 72.0 °F - 66.0 °F 81% 29.78 in 10.0 mi Calm Calm - N/A   Clear