National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Portland, Portland International Jetport (KPWM)

Lat: 43.64°NLon: 70.3°WElev: 72ft.

Overcast

36°F

2°C

Humidity 67%
Wind Speed SW 10 G 22 mph
Barometer 29.93 in (1013.7 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 13 Mar 8:51 pm EDT
Extended Forecast for

Riverton ME

  • Tonight

    Tonight: Snow, mainly between 1am and 5am. Low around 31. Southeast wind around 5 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 3 inches possible.

    Low: 31 °F

    Chance Snow
    then Snow

  • Saturday

    Saturday: A chance of rain and snow before 3pm, then a chance of rain. Partly sunny, with a high near 46. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 22. West wind 5 to 10 mph, with gusts as high as 25 mph.

    Low: 22 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 42. Calm wind becoming southwest around 5 mph.

    High: 42 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 29. Calm wind becoming south around 5 mph after midnight.

    Low: 29 °F

    Mostly Cloudy

  • Monday

    Monday: Rain, mainly after 7am. High near 53. Chance of precipitation is 100%.

    High: 53 °F

    Rain

  • Monday Night

    Monday Night: Rain. Low around 37. Chance of precipitation is 100%.

    Low: 37 °F

    Rain

  • Tuesday

    Tuesday: Rain likely, mainly before 9am. Partly sunny, with a high near 49. Chance of precipitation is 60%.

    High: 49 °F

    Rain Likely
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 16.

    Low: 16 °F

    Mostly Clear

Detailed Forecast

Tonight
Snow, mainly between 1am and 5am. Low around 31. Southeast wind around 5 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 3 inches possible.
Saturday
A chance of rain and snow before 3pm, then a chance of rain. Partly sunny, with a high near 46. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Mostly clear, with a low around 22. West wind 5 to 10 mph, with gusts as high as 25 mph.
Sunday
Increasing clouds, with a high near 42. Calm wind becoming southwest around 5 mph.
Sunday Night
Mostly cloudy, with a low around 29. Calm wind becoming south around 5 mph after midnight.
Monday
Rain, mainly after 7am. High near 53. Chance of precipitation is 100%.
Monday Night
Rain. Low around 37. Chance of precipitation is 100%.
Tuesday
Rain likely, mainly before 9am. Partly sunny, with a high near 49. Chance of precipitation is 60%.
Tuesday Night
Mostly clear, with a low around 16.
Wednesday
Sunny, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
Mostly cloudy, with a high near 41.
Thursday Night
Partly cloudy, with a low around 25.
Friday
Mostly sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Riverton ME
 43.69°N 70.32°W (Elev. 75 ft)
Last Update:
8:00 pm EDT Mar 13, 2026
Forecast Valid:
9pm EDT Mar 13, 2026-6pm EDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation