Rain forecast and rainfall this year
Portland, ME
Rain likely today: 81% chance, about 0.60 inches.
Updated Friday 8:40 PM ET.
Forecast
81 percent chance of rain
TodayHigh 57°, low 50°About 0.60 in of rain
85 percent chance of rain
TomorrowHigh 53°, low 46°About 0.06 in of rain
This year so far, since Jan 1
33.56 in
−6.66 in below normal for this point in the year (40.22 in).
National rank116th of 363
In Maine1st of 2
Biggest day1.98 in, May 14
Last measurable rain0.03 in, Nov 5, 2026
Month by month
Jan2.40
Feb1.36
Mar4.22
Apr3.09
May7.02
Jun5.31
Jul0.63
Aug2.71
Sep5.12
Oct1.67
Nov0.03
Dec–
This yearNormal
Records since 1941
Wettest year66.40 in, 2005
Biggest rain day11.74 in, Oct 21, 1996
Nearby cities
- North ConwayNH30.61 in this year51 miles
- ManchesterNH26.49 in this year76 miles
- LowellMA25.27 in this year88 miles
- CambridgeMA24.99 in this year98 miles
- BostonMA24.99 in this year99 miles
More Portland weather
Forecast based on National Weather Service forecast data. Rainfall records are from NOAA Regional Climate Centers for the Portland Jetport station, recorded since 1940; normals are NOAA’s 1991–2020 averages. Totals are preliminary. Records are this station’s own and may differ from official NWS city records, which can include earlier locations. Incomplete years and several-day totals are left out. Rain Scoreboard is not affiliated with the National Weather Service or NOAA.