Weather History for Portland, ME

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Friday, September 20, 2013

  Actual Average Record
Temperature  
Mean Temperature 61 °F 59 °F  
Max Temperature 74 °F 68 °F 87 °F (1985)
Min Temperature 47 °F 49 °F 27 °F (1964)
Degree Days  
Heating Degree Days 4 7  
Month to date heating degree days 92 85  
Since 1 July heating degree days 110 130  
Cooling Degree Days 0 1  
Month to date cooling degree days 37 27  
Year to date cooling degree days 454 355  
Growing Degree Days 10 (Base 50)    
Moisture  
Dew Point 51 °F    
Average Humidity 72    
Maximum Humidity 100    
Minimum Humidity 44    
Precipitation  
Precipitation 0.00 in 0.12 in 2.04 in (1987)
Month to date precipitation 6.38 2.30  
Year to date precipitation 34.60 32.04  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2002)
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 0.0 0.0  
Since 1 September snowfall 0.0 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.05 in    
Wind  
Wind Speed 3 mph (ESE)    
Max Wind Speed 12 mph    
Max Gust Speed 14 mph    
Visibility 8 miles    
Events Fog    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 20, 2013 Rise Set
Actual Time 6:26 AM EDT 6:41 PM EDT
Civil Twilight 5:57 AM EDT 7:10 PM EDT
Nautical Twilight 5:24 AM EDT 7:44 PM EDT
Astronomical Twilight 4:49 AM EDT 8:18 PM EDT
Moon 7:09 PM EDT (9/20) 7:41 AM EDT (9/20)
Length of Visible Light 13h 12m
Length of Day
12h 15m
Full, 98% of the Moon is Illuminated
Sep 20
Full
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
Full

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:51 AM 50.0 °F 48.0 °F 93% 30.05 in 10.0 mi West 4.6 mph - N/A   Clear
1:51 AM 50.0 °F 48.0 °F 93% 30.06 in 10.0 mi Calm Calm - N/A   Clear
2:51 AM 50.0 °F 46.9 °F 89% 30.04 in 10.0 mi Calm Calm - N/A   Clear
3:51 AM 48.9 °F 46.0 °F 90% 30.04 in 10.0 mi Calm Calm - N/A   Clear
4:51 AM 48.0 °F 46.0 °F 93% 30.04 in 10.0 mi Calm Calm - N/A   Clear
5:51 AM 48.0 °F 46.0 °F 93% 30.06 in 10.0 mi West 3.5 mph - N/A   Clear
6:51 AM 51.1 °F 50.0 °F 96% 30.07 in 10.0 mi Calm Calm - N/A   Clear
7:51 AM 55.0 °F 52.0 °F 89% 30.08 in 10.0 mi West 4.6 mph - N/A   Clear
8:51 AM 61.0 °F 54.0 °F 78% 30.09 in 10.0 mi Calm Calm - N/A   Clear
9:51 AM 68.0 °F 54.0 °F 61% 30.11 in 10.0 mi North 3.5 mph - N/A   Clear
10:51 AM 70.0 °F 52.0 °F 53% 30.10 in 10.0 mi East 3.5 mph - N/A   Clear
11:51 AM 72.0 °F 48.9 °F 44% 30.09 in 10.0 mi East 5.8 mph - N/A   Clear
12:51 PM 72.0 °F 50.0 °F 46% 30.07 in 10.0 mi East 8.1 mph - N/A   Clear
1:51 PM 73.0 °F 52.0 °F 48% 30.05 in 10.0 mi ESE 10.4 mph - N/A   Clear
2:51 PM 70.0 °F 51.1 °F 51% 30.04 in 10.0 mi East 10.4 mph - N/A   Clear
3:51 PM 71.1 °F 48.9 °F 45% 30.04 in 10.0 mi SSE 6.9 mph - N/A   Clear
4:51 PM 69.1 °F 52.0 °F 54% 30.04 in 10.0 mi Calm Calm - N/A   Clear
5:51 PM 66.9 °F 53.1 °F 61% 30.04 in 10.0 mi SSE 4.6 mph - N/A   Clear
6:51 PM 61.0 °F 51.1 °F 70% 30.04 in 10.0 mi SE 4.6 mph - N/A   Clear
7:51 PM 57.9 °F 53.1 °F 84% 30.05 in 10.0 mi East 3.5 mph - N/A   Clear
8:51 PM 55.9 °F 53.1 °F 90% 30.05 in 10.0 mi East 3.5 mph - N/A   Clear
9:51 PM 55.9 °F 54.0 °F 93% 30.05 in 8.0 mi Calm Calm - N/A   Clear
10:10 PM 55.9 °F 55.0 °F 97% 30.04 in 9.0 mi Calm Calm - N/A   Partly Cloudy
10:20 PM 54.0 °F 52.0 °F 93% 30.04 in 2.5 mi Calm Calm - N/A   Mostly Cloudy
10:29 PM 55.0 °F 53.1 °F 93% 30.04 in 5.0 mi Calm Calm - N/A   Mostly Cloudy
10:40 PM 55.9 °F 55.0 °F 97% 30.03 in 1.8 mi SSE 3.5 mph - N/A   Overcast
10:43 PM 57.0 °F 55.9 °F 96% 30.03 in 0.8 mi SSE 3.5 mph - N/A   Overcast
10:49 PM 57.2 °F 55.4 °F 94% 30.03 in 0.2 mi Calm Calm - N/A Fog Fog
10:51 PM 57.0 °F 55.9 °F 96% 30.03 in 0.2 mi Calm Calm - N/A Fog Fog
11:51 PM 55.9 °F 55.0 °F 97% 30.03 in 0.2 mi Calm Calm - N/A Fog Fog