Portland, ME

11:59 AM EST on December 15, 2017 (GMT -0500)
Portland International

Weather History for KPWM - December, 2012

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Tuesday, December 18, 2012

  Actual Average Record
Temperature  
Mean Temperature 41 °F 28 °F  
Max Temperature 48 °F 37 °F 53 °F (1996)
Min Temperature 33 °F 20 °F -9 °F (1963)
Degree Days  
Heating Degree Days 24 37  
Month to date heating degree days 553 610  
Since 1 July heating degree days 1890 2101  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 492 359  
Moisture  
Dew Point 40 °F    
Average Humidity 93    
Maximum Humidity 100    
Minimum Humidity 86    
Precipitation  
Precipitation 3.50 in 0.13 in 3.50 in (2012)
Month to date precipitation 5.20 2.46  
Year to date precipitation 51.37 45.69  
Snow  
Snow 0.00 in 0.40 in 8.90 in (1975)
Month to date snowfall 4.6 6.4  
Since 1 July snowfall 7.5 8.3  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.59 in    
Wind  
Wind Speed 15 mph (NE)    
Max Wind Speed 23 mph    
Max Gust Speed 34 mph    
Visibility 2 miles    
Events Fog , Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 18, 2012 Rise Set
Actual Time 7:10 AM EST 4:06 PM EST
Civil Twilight 6:37 AM EST 4:39 PM EST
Nautical Twilight 6:00 AM EST 5:15 PM EST
Astronomical Twilight 5:25 AM EST 5:50 PM EST
Moon 10:38 AM EST (12/18) 10:39 PM EST (12/18)
Length of Visible Light 10h 01m
Length of Day
8h 56m
Waxing Crescent, 34% of the Moon is Illuminated
Dec 18
Waxing Crescent
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:42 AM 33.8 °F 27.0 °F 30.2 °F 87% 29.90 in 4.0 mi North 8.1 mph - 0.02 in Rain Light Rain
12:51 AM 33.1 °F 25.5 °F 30.9 °F 92% 29.90 in 3.0 mi North 9.2 mph - 0.02 in Rain Light Rain
1:51 AM 34.0 °F 24.6 °F 32.0 °F 92% 29.86 in 4.0 mi NNE 13.8 mph - 0.02 in   Overcast
2:18 AM 35.6 °F 27.5 °F 33.8 °F 93% 29.84 in 2.0 mi NE 11.5 mph - 0.00 in   Overcast
2:51 AM 35.1 °F 26.9 °F 33.1 °F 92% 29.83 in 2.5 mi NNE 11.5 mph - 0.01 in   Overcast
3:46 AM 35.6 °F 27.5 °F 33.8 °F 93% 29.77 in 1.8 mi NNE 11.5 mph - 0.07 in Rain Light Rain
3:51 AM 36.0 °F 28.0 °F 34.0 °F 93% 29.78 in 1.8 mi NE 11.5 mph - 0.08 in Rain Rain
3:56 AM 35.6 °F 28.0 °F 33.8 °F 93% 29.77 in 2.0 mi NNE 10.4 mph - 0.02 in Rain Rain
4:08 AM 35.6 °F 28.0 °F 35.6 °F 100% 29.76 in 3.0 mi NNE 10.4 mph - 0.04 in Rain Rain
4:31 AM 35.6 °F 29.2 °F 35.6 °F 100% 29.75 in 2.5 mi NNE 8.1 mph - 0.09 in Rain Rain
4:51 AM 37.4 °F 31.4 °F 35.6 °F 93% 29.74 in 1.5 mi NNE 8.1 mph - N/A Rain Rain
5:51 AM 35.1 °F 27.4 °F 34.0 °F 96% 29.71 in 2.0 mi North 10.4 mph - 0.22 in Rain Rain
6:51 AM 43.0 °F 35.4 °F 41.0 °F 93% 29.69 in 1.5 mi ENE 16.1 mph 21.9 mph 0.24 in Rain Rain
7:51 AM 44.1 °F 35.2 °F 42.1 °F 93% 29.66 in 1.5 mi East 23.0 mph 32.2 mph 0.14 in Rain Light Rain
8:51 AM 45.0 °F 37.9 °F 43.0 °F 93% 29.63 in 1.5 mi East 16.1 mph 27.6 mph 0.25 in Rain Rain
9:26 AM 44.6 °F - 42.8 °F 93% 29.62 in 0.8 mi North - - 0.18 in Rain Rain
9:51 AM 46.0 °F 38.3 °F 43.0 °F 89% 29.61 in 1.5 mi East 20.7 mph 32.2 mph 0.30 in Rain Rain
10:51 AM 46.0 °F 38.5 °F 44.1 °F 93% 29.59 in 1.5 mi ENE 19.6 mph 34.5 mph 0.27 in Rain Rain
11:23 AM 46.4 °F 39.8 °F 44.6 °F 93% 29.57 in 1.0 mi ENE 16.1 mph 25.3 mph 0.15 in Rain Heavy Rain
11:51 AM 46.0 °F 38.8 °F 44.1 °F 93% 29.55 in 1.2 mi ENE 18.4 mph 26.5 mph 0.29 in Rain Rain
12:51 PM 46.0 °F 39.6 °F 45.0 °F 96% 29.52 in 0.5 mi ENE 15.0 mph - 0.28 in Fog , Rain Rain
1:12 PM 46.4 °F 39.8 °F 44.6 °F 93% 29.50 in 1.0 mi ENE 16.1 mph 23.0 mph 0.10 in Rain Rain
1:51 PM 46.9 °F - 45.0 °F 93% 29.48 in 1.2 mi ENE 17.3 mph - 0.25 in Rain Rain
2:00 PM 46.4 °F 39.8 °F 44.6 °F 93% 29.48 in 0.8 mi ENE 16.1 mph - 0.04 in Rain Rain
2:51 PM 46.9 °F - 46.0 °F 97% 29.48 in 0.8 mi ENE 19.6 mph 26.5 mph 0.28 in Rain Rain
3:51 PM 46.9 °F - 46.0 °F 97% 29.45 in 0.8 mi East 18.4 mph 29.9 mph 0.20 in Rain Rain
4:51 PM 46.9 °F - 45.0 °F 93% 29.44 in 1.0 mi ENE 16.1 mph 26.5 mph 0.12 in Rain Light Rain
5:51 PM 46.9 °F - 45.0 °F 93% 29.42 in 1.0 mi ENE 17.3 mph 25.3 mph 0.11 in Rain Light Rain
6:51 PM 46.0 °F 39.0 °F 44.1 °F 93% 29.42 in 1.0 mi NE 17.3 mph - 0.03 in Rain Light Rain
6:58 PM 46.4 °F 39.2 °F 44.6 °F 93% 29.42 in 1.8 mi NE 18.4 mph 23.0 mph 0.00 in Rain Light Rain
7:11 PM 46.4 °F 40.1 °F 44.6 °F 93% 29.41 in 1.0 mi NE 15.0 mph - 0.01 in Rain Light Rain
7:51 PM 45.0 °F 38.5 °F 44.1 °F 97% 29.41 in 1.0 mi NE 13.8 mph 23.0 mph 0.05 in Rain Light Rain
7:58 PM 44.6 °F 37.2 °F 44.6 °F 100% 29.40 in 1.5 mi NNE 17.3 mph - 0.00 in Rain Light Rain
8:51 PM 44.6 °F 37.8 °F 44.6 °F 100% 29.39 in 1.5 mi NNE 15.0 mph - N/A Rain Light Rain
9:51 PM 41.0 °F 33.9 °F 39.0 °F 93% 29.39 in 1.5 mi North 12.7 mph 19.6 mph 0.08 in Rain Light Rain
10:51 PM 39.0 °F 31.4 °F 37.9 °F 96% 29.39 in 2.5 mi North 12.7 mph 20.7 mph 0.02 in Rain Light Rain
11:51 PM 39.0 °F 31.0 °F 37.0 °F 93% 29.39 in 2.5 mi North 13.8 mph - 0.00 in   Overcast
11:58 PM 37.4 °F 29.3 °F 37.4 °F 100% 29.38 in 8.0 mi North 12.7 mph - N/A   Overcast