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.

Mostly Cloudy

75°F

24°C

Humidity 48%
Wind Speed W 14 G 25 mph
Barometer 29.49 in (998.6 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 19 Jun 4:51 pm EDT
Extended Forecast for

South Harpswell ME

  • Tonight

    Tonight: Increasing clouds, with a low around 59. West wind around 15 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 69. Northwest wind around 15 mph, with gusts as high as 20 mph.

    High: 69 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 57. West wind 5 to 10 mph.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers after 2pm. Partly sunny, with a high near 67. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 67 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 7pm. Partly cloudy, with a low around 56. South wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Rain likely, mainly after 5pm. Partly sunny, with a high near 66. Chance of precipitation is 60%.

    High: 66 °F

    Partly Sunny
    then Rain
    Likely

  • Monday Night

    Monday Night: Rain likely before 8pm, then showers, mainly after 8pm. Low around 57. Breezy. Chance of precipitation is 90%.

    Low: 57 °F

    Showers and
    Breezy

  • Tuesday

    Tuesday: Showers likely, mainly before 8am. Partly sunny, with a high near 71. Chance of precipitation is 60%.

    High: 71 °F

    Showers
    Likely then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 59. West wind around 15 mph.
Saturday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 69. Northwest wind around 15 mph, with gusts as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 57. West wind 5 to 10 mph.
Sunday
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 67. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Sunday Night
A 30 percent chance of showers before 7pm. Partly cloudy, with a low around 56. South wind around 5 mph becoming calm in the evening.
Monday
Rain likely, mainly after 5pm. Partly sunny, with a high near 66. Chance of precipitation is 60%.
Monday Night
Rain likely before 8pm, then showers, mainly after 8pm. Low around 57. Breezy. Chance of precipitation is 90%.
Tuesday
Showers likely, mainly before 8am. Partly sunny, with a high near 71. Chance of precipitation is 60%.
Tuesday Night
Partly cloudy, with a low around 60.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 57.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Harpswell ME
 43.74°N 70°W (Elev. 0 ft)
Last Update:
2:17 pm EDT Jun 19, 2026
Forecast Valid:
5pm EDT Jun 19, 2026-6pm EDT Jun 26, 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