Portland, ME weather and climate
Cumberland County, ME · population 68,505 · about 0 ft elevation
Everything below is a 30 year average for 1991-2020, computed from daily climate history at Portland's own coordinates.
The year at a glance
- Sunny days
- 198
- clear or partly cloudy, per year
- Precipitation
- 49 in
- per year
- Wet days
- 127
- rain or snow per year
- Snowfall
- 66 in
- per year
- Hot days
- 5
- above 90 °F
- Freezing nights
- 138
- at or below 32 °F
- Humidity
- 74%
- average relative
- Average temperature
- 47 °F
- year round
Monthly temperatures
Average daily high and low for each month, in °F.
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daily high | 32 | 35 | 42 | 54 | 64 | 74 | 80 | 79 | 71 | 59 | 48 | 38 |
| Daily low | 15 | 17 | 26 | 35 | 45 | 55 | 61 | 60 | 52 | 41 | 32 | 22 |
Monthly precipitation
Total rain plus melted snow for each month, in inches.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Portland | 3.9 | 3.6 | 4.6 | 4.7 | 3.9 | 4.0 | 3.1 | 3.2 | 3.7 | 5.4 | 4.5 | 4.9 |
Monthly sunny days
Days each month with clear or partly cloudy skies.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Portland | 17 | 15 | 16 | 15 | 15 | 15 | 18 | 19 | 18 | 18 | 16 | 16 |
Compare Portland with another city
Nearby cities and popular picks. Any two cities can be compared from the home page.
- Portland vs South Portland, ME
- Portland vs Oak Hill, ME
- Portland vs Westbrook, ME
- Portland vs Old Orchard Beach, ME
- Portland vs Yarmouth, ME
- Portland vs Gorham, ME
- Portland vs New York, NY
- Portland vs Los Angeles, CA
- Portland vs Chicago, IL
- Portland vs Houston, TX
- Portland vs Phoenix, AZ
- Portland vs Philadelphia, PA
About this data
Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).