Portland

The tables below display average monthly climate and weather indicators in Portland Maine.

Temperature by: Fahrenheit / Centigrade

Portland Temperature Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Avg. Temperature4.26.48.510.613.917.520.120.317.412.57.84.612.0
Avg. Max Temperature7.410.613.315.919.523.326.626.823.717.811.47.617.0
Avg. Min Temperature0.92.33.75.28.311.613.613.811.17.24.21.66.9
Days with Max Temp of 32 C or Higher0.00.00.00.0< 0.51.04.04.02.00.00.00.011.0
Days with Min Temp Below Freezing13.08.04.01.02.00.00.00.00.01.05.09.041.0
 
Portland Heating and Cooling Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Heating Degree Days78759954942024991.028.035.01023265677694522
Cooling Degree Days0.00.00.00.00.046.012714751.00.00.00.0371
 
Portland Precipitation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Precipitation (inches)5.43.93.62.42.11.50.61.11.82.75.36.136.3
Days with Precipitation 0.01 inch or More18.016.017.014.012.09.04.05.08.012.018.019.0152
Monthly Snowfall (inches)3.21.10.43.00.00.00.00.0< 0.050.00.41.46.5
 
Other Portland Weather Indicators Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Average Wind Speed10.09.28.37.47.17.27.67.16.56.58.69.67.9
Clear Days3.03.03.03.05.06.013.011.010.05.03.02.068.0
Partly Cloudy Days4.04.05.06.07.08.08.010.08.08.04.03.074.0
Cloudy Days24.021.023.021.019.016.010.010.012.018.023.026.0222
Percent of Possible Sunshine28.038.048.052.057.056.069.066.062.044.028.023.048.0
Avg. Relative Humidity71.580.076.073.070.068.065.564.065.569.075.080.081.5

Weather information for other cities in Maine

Portions of this site are based on the CIA World Fact Book, a public-domain work
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