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

Hazardous Weather Conditions

Current conditions at

Portland, Portland International Jetport (KPWM)

Lat: 43.64°NLon: 70.3°WElev: 72ft.

Overcast

34°F

1°C

Humidity 100%
Wind Speed NW 6 mph
Barometer 29.66 in (1004.5 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 11 Jan 11:51 am EST
Extended Forecast for

South Harpswell ME

  • This Afternoon

    This Afternoon: A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 38. Northwest wind around 10 mph.

    High: 38 °F

    Chance Rain

  • Tonight

    Tonight: A slight chance of rain and snow before 9pm, then a slight chance of rain between 9pm and 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 25. Windy, with a west wind 15 to 20 mph increasing to 25 to 30 mph after midnight. Chance of precipitation is 20%.

    Low: 25 °F

    Slight Chance
    Rain/Snow and
    Windy

  • Monday

    Monday: Increasing clouds, with a high near 35. Breezy, with a west wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 35 °F

    Increasing
    Clouds and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31. Southwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 40. Southwest wind 10 to 15 mph.

    High: 40 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Cloudy, with a low around 36.

    Low: 36 °F

    Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers before 1pm. Cloudy, with a high near 43.

    High: 43 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain after 9pm. Cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain before 3pm, then a chance of rain and snow. Cloudy, with a high near 39. Chance of precipitation is 50%.

    High: 39 °F

    Chance Rain
    then Chance
    Rain/Snow

Detailed Forecast

This Afternoon
A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 38. Northwest wind around 10 mph.
Tonight
A slight chance of rain and snow before 9pm, then a slight chance of rain between 9pm and 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 25. Windy, with a west wind 15 to 20 mph increasing to 25 to 30 mph after midnight. Chance of precipitation is 20%.
Monday
Increasing clouds, with a high near 35. Breezy, with a west wind 15 to 25 mph, with gusts as high as 35 mph.
Monday Night
Partly cloudy, with a low around 31. Southwest wind around 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 40. Southwest wind 10 to 15 mph.
Tuesday Night
Cloudy, with a low around 36.
Wednesday
A 30 percent chance of showers before 1pm. Cloudy, with a high near 43.
Wednesday Night
A 40 percent chance of rain after 9pm. Cloudy, with a low around 35.
Thursday
A chance of rain before 3pm, then a chance of rain and snow. Cloudy, with a high near 39. Chance of precipitation is 50%.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 19. Blustery.
Friday
A 30 percent chance of snow. Partly sunny, with a high near 27. Blustery.
Friday Night
Partly cloudy, with a low around 21.
Saturday
Mostly sunny, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Harpswell ME
 43.74°N 70°W (Elev. 0 ft)
Last Update:
12:06 pm EST Jan 11, 2026
Forecast Valid:
12pm EST Jan 11, 2026-6pm EST Jan 17, 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