Weather History for Portland, ME

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Tuesday, May 20, 2014

  Actual Average Record
Temperature  
Mean Temperature 58 °F 55 °F  
Max Temperature 69 °F 65 °F 86 °F (1959)
Min Temperature 46 °F 45 °F 32 °F (2002)
Degree Days  
Heating Degree Days 7 10  
Month to date heating degree days 195 259  
Since 1 July heating degree days 7246 6907  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Growing Degree Days 8 (Base 50)    
Moisture  
Dew Point 47 °F    
Average Humidity 69    
Maximum Humidity 93    
Minimum Humidity 44    
Precipitation  
Precipitation 0.01 in 0.13 in 2.31 in (1928)
Month to date precipitation 2.95 2.58  
Year to date precipitation 18.30 17.77  
Snow  
Snow 0.00 in 0.00 in T in (1912)
Month to date snowfall T 0.1  
Since 1 July snowfall 83.4 62.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.97 in    
Wind  
Wind Speed 10 mph (NNW)    
Max Wind Speed 21 mph    
Max Gust Speed 25 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

May. 20, 2014 Rise Set
Actual Time 5:11 AM EDT 8:04 PM EDT
Civil Twilight 4:37 AM EDT 8:38 PM EDT
Nautical Twilight 3:54 AM EDT 9:21 PM EDT
Astronomical Twilight 3:04 AM EDT 10:12 PM EDT
Moon 12:28 AM EDT (5/20) 11:19 AM EDT (5/20)
Length of Visible Light 16h 01m
Length of Day
14h 53m
Waning Gibbous, 60% of the Moon is Illuminated
May 20
Waning Gibbous
May 21
Last Quarter
May 28
New
Jun 5
First Quarter
Jun 13
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 48.9 °F 46.0 °F 90% 29.97 in 10.0 mi NW 9.2 mph - N/A   Mostly Cloudy
1:51 AM 48.2 °F 46.4 °F 93% 29.97 in 10.0 mi NW 6.9 mph - N/A   Overcast
2:51 AM 48.9 °F 45.0 °F 86% 29.96 in 10.0 mi WNW 10.4 mph - N/A   Overcast
3:31 AM 48.9 °F 45.0 °F 86% 29.97 in 10.0 mi NW 6.9 mph - N/A   Mostly Cloudy
3:51 AM 48.9 °F 45.0 °F 86% 29.97 in 10.0 mi NNW 5.8 mph - N/A   Overcast
4:17 AM 48.0 °F 44.1 °F 86% 29.97 in 10.0 mi NW 5.8 mph - N/A   Scattered Clouds
4:51 AM 48.0 °F 44.1 °F 86% 29.98 in 10.0 mi WNW 10.4 mph - N/A   Mostly Cloudy
5:51 AM 50.0 °F 43.0 °F 77% 29.99 in 10.0 mi NW 8.1 mph - N/A   Mostly Cloudy
6:51 AM 50.0 °F 43.0 °F 77% 30.00 in 10.0 mi NNW 6.9 mph - N/A   Partly Cloudy
7:51 AM 55.9 °F 45.0 °F 67% 29.99 in 10.0 mi North 13.8 mph 23.0 mph N/A   Scattered Clouds
8:51 AM 60.1 °F 46.0 °F 60% 29.98 in 10.0 mi NNW 12.7 mph 19.6 mph N/A   Scattered Clouds
9:51 AM 62.1 °F 46.9 °F 58% 29.97 in 10.0 mi NW 10.4 mph 21.9 mph N/A   Scattered Clouds
10:51 AM 62.6 °F 46.4 °F 55% 29.97 in 10.0 mi North 10.4 mph 23.0 mph N/A   Mostly Cloudy
11:51 AM 66.0 °F 48.0 °F 52% 29.96 in 10.0 mi North 15.0 mph 21.9 mph N/A   Mostly Cloudy
12:51 PM 64.9 °F 46.0 °F 50% 29.96 in 10.0 mi North 16.1 mph - N/A   Mostly Cloudy
1:51 PM 68.0 °F 46.9 °F 47% 29.95 in 10.0 mi NW 17.3 mph 24.2 mph N/A   Mostly Cloudy
2:51 PM 68.0 °F 46.9 °F 47% 29.94 in 10.0 mi NW 11.5 mph 17.3 mph N/A   Overcast
3:51 PM 69.1 °F 46.9 °F 45% 29.94 in 10.0 mi NW 12.7 mph - N/A   Mostly Cloudy
4:51 PM 68.0 °F 46.0 °F 45% 29.94 in 10.0 mi NW 13.8 mph 20.7 mph N/A   Overcast
5:51 PM 69.1 °F 46.0 °F 44% 29.93 in 10.0 mi NNW 12.7 mph - N/A   Scattered Clouds
6:51 PM 66.9 °F 44.1 °F 44% 29.94 in 10.0 mi NW 11.5 mph - N/A   Overcast
7:51 PM 60.1 °F 48.9 °F 67% 29.96 in 10.0 mi ESE 9.2 mph - N/A   Overcast
8:51 PM 59.0 °F 50.0 °F 72% 29.99 in 10.0 mi East 4.6 mph - N/A   Overcast
9:51 PM 57.0 °F 51.1 °F 81% 30.00 in 10.0 mi ESE 4.6 mph - 0.01 in   Overcast
10:51 PM 57.0 °F 51.1 °F 81% 29.99 in 10.0 mi NNE 4.6 mph - N/A   Mostly Cloudy
11:51 PM 55.9 °F 50.0 °F 80% 29.99 in 10.0 mi WNW 4.6 mph - N/A   Mostly Cloudy