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Portland, Maine Weather, Forecast, Temperature and Precipitation - CLRSearch

Portland, Maine Weather, Forecast, Temperature and Precipitation

Portland, Maine Weather, Forecast, Temperature and Precipitation Statistics


2012 Weather Summary Portland, ME Maine United States
Weather Index 52 49 100
Hail Index 26 26 100
Hurricane Index 98 92 100
Tornado Index 0 1 100
Wind Index 28 33 100
 
Annual Maximum Avg. Temperature 55 °F 50 °F N/A
Annual Minimum Avg. Temperature 36 °F 30 °F N/A
Annual Avg. Temperature 45.4 °F 39.7 °F N/A
Percent of Possible Sunshine 57 51 N/A
Mean Sky Cover (Sunrise to Sunset - Out of 10) 6 7 N/A
Mean Number of Days Clear (Out of 365 Days) 101 65 N/A
Mean Number of Days Rain (Out of 365 Days) 129 156 N/A
Mean Number of Days Snow (Out of 365 Days) 17 27 N/A
Avg. Annual Precipitation (Total Inches) 44" 38" N/A
Avg. Annual Snowfall (Total Inches) 71" 104" N/A
2012 Average Monthly Low Temperature Portland, ME Maine United States
Avg. Annual Low Temperature 36 °F 30 °F N/A
Avg. January Low Temperature 13.17 °F 2.48 °F N/A
Avg. February Low Temperature 14.74 °F 3.47 °F N/A
Avg. March Low Temperature 24.28 °F 16.11 °F N/A
Avg. April Low Temperature 33.46 °F 29.08 °F N/A
Avg. May Low Temperature 42.85 °F 39.27 °F N/A
Avg. June Low Temperature 51.84 °F 48.74 °F N/A
Avg. July Low Temperature 57.38 °F 54.54 °F N/A
Avg. August Low Temperature 56.5 °F 52.43 °F N/A
Avg. September Low Temperature 49.01 °F 43.86 °F N/A
Avg. October Low Temperature 38.93 °F 33.75 °F N/A
Avg. November Low Temperature 30.6 °F 25.27 °F N/A
Avg. December Low Temperature 18.95 °F 10.63 °F N/A
2012 Average Monthly High Temperature Portland, ME Maine United States
Avg. Annual High Temperature 55 °F 50 °F N/A
Avg. January High Temperature 32.25 °F 25.74 °F N/A
Avg. February High Temperature 33.94 °F 28.98 °F N/A
Avg. March High Temperature 40.98 °F 38.75 °F N/A
Avg. April High Temperature 52.3 °F 51.01 °F N/A
Avg. May High Temperature 63.14 °F 65.03 °F N/A
Avg. June High Temperature 72.48 °F 74.1 °F N/A
Avg. July High Temperature 78.19 °F 79.25 °F N/A
Avg. August High Temperature 76.93 °F 77.47 °F N/A
Avg. September High Temperature 69.37 °F 68.5 °F N/A
Avg. October High Temperature 59.22 °F 56.43 °F N/A
Avg. November High Temperature 47.68 °F 43.05 °F N/A
Avg. December High Temperature 36.81 °F 30.4 °F N/A
2012 Average Monthly Precipitation Portland, ME Maine United States
Avg. Annual Precipitation 44" 38" N/A
Avg. January Precipitation 4.01" 3.52" N/A
Avg. February Precipitation 3.17" 2.47" N/A
Avg. March Precipitation 4.27" 3.51" N/A
Avg. April Precipitation 4.34" 3.72" N/A
Avg. May Precipitation 3.86" 3.73" N/A
Avg. June Precipitation 3.45" 3.85" N/A
Avg. July Precipitation 3.3" 3.57" N/A
Avg. August Precipitation 3.09" 3.59" N/A
Avg. September Precipitation 3.47" 4.01" N/A
Avg. October Precipitation 4.4" 3.82" N/A
Avg. November Precipitation 4.66" 3.95" N/A
Avg. December Precipitation 4.17" 3.81" N/A

Annual Heating Degree Days (HDD): A form of Degree Day used to estimate energy requirements for heating. Typically, heating degree days are calculated as how much colder the mean temperature at a location is than 65°F on a given day. For example, if a location experiences a mean temperature of 55°F on a certain day, there were 10 HDD that day because 65 - 55 = 10, according to the National Weather Service.

Annual Cooling Degree Days (CDD): A form of Degree Day used to estimate energy requirements for air conditioning or refrigeration. Typically, cooling degree days are calculated as how much warmer the mean temperature at a location is than 65°F on a given day. For example, if a location experiences a mean temperature of 75°F on a certain day, there were 10 CDD that day because 75 - 65 = 10, according to the National Weather Service.

Mean Sky Cover: Reflects the approximate amount that the sky is covered with clouds, sunrise to sunset on a scale of 0 to 10.

Index score: (100 = National Average) for an area is compared to the national average of 100. A score of 200 indicates twice the national average, while 50 indicates half the national average. Note: A higher Weather Index score represents better overall weather (higher number good). A higher Hail, Hurricane or Tornado Index means the chance of that weather event is higher (higher number bad).

Information is deemed reliable but not guaranteed. Demographic Information FAQ



Portland, Maine Demographics Summary