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.

Partly Cloudy

89°F

32°C

Humidity 50%
Wind Speed W 14 mph
Barometer 29.77 in (1007.9 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 4 Jul 2:51 pm EDT
Extended Forecast for

Riverton ME

  • Independence Day

    Independence Day: Isolated showers and thunderstorms. Mostly sunny and hot, with a high near 92. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 92 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 62. Northwest wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 85. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 59. Southeast wind around 5 mph becoming calm.

    Low: 59 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 80. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 80 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers before 3pm. Partly sunny, with a high near 76.

    High: 76 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 55.

    Low: 55 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

Independence Day
Isolated showers and thunderstorms. Mostly sunny and hot, with a high near 92. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 62. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 85. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 59. Southeast wind around 5 mph becoming calm.
Monday
Mostly cloudy, with a high near 80. Calm wind becoming southeast around 5 mph in the afternoon.
Monday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 56.
Tuesday
A 30 percent chance of showers before 3pm. Partly sunny, with a high near 76.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Mostly sunny and hot, with a high near 92.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 67.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Saturday
Mostly sunny, with a high near 86.
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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:
2:40 pm EDT Jul 4, 2026
Forecast Valid:
3pm EDT Jul 4, 2026-6pm EDT Jul 11, 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