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.

Fair

28°F

-2°C

Humidity 92%
Wind Speed Calm
Barometer 30.26 in (1024.8 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 3 Nov 1:51 am EST
Extended Forecast for

South Harpswell ME

  • Overnight

    Overnight: Mostly clear, with a low around 34. Calm wind becoming west around 5 mph.

    Low: 34 °F

    Mostly Clear

  • Monday

    Monday: Showers likely, mainly after 5pm. Increasing clouds, with a high near 55. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Mostly Sunny
    then Showers
    Likely and
    Breezy

  • Monday Night

    Monday Night: Showers, mainly before 1am. Low around 46. Breezy, with a south wind 20 to 25 mph becoming west after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 46 °F

    Breezy.
    Showers then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 52. Breezy, with a northwest wind 20 to 25 mph, with gusts as high as 35 mph.

    High: 52 °F

    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 43. Breezy, with a west wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.

    Low: 43 °F

    Mostly Clear
    and Breezy
    then Partly
    Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers after 4pm. Mostly cloudy, with a high near 53.

    High: 53 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers. Low around 42. Breezy. Chance of precipitation is 80%.

    Low: 42 °F

    Showers and
    Breezy

  • Thursday

    Thursday: A 50 percent chance of showers before 10am. Mostly sunny, with a high near 48. Breezy.

    High: 48 °F

    Breezy.
    Chance
    Showers then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 34. Calm wind becoming west around 5 mph.
Monday
Showers likely, mainly after 5pm. Increasing clouds, with a high near 55. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Showers, mainly before 1am. Low around 46. Breezy, with a south wind 20 to 25 mph becoming west after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Sunny, with a high near 52. Breezy, with a northwest wind 20 to 25 mph, with gusts as high as 35 mph.
Tuesday Night
Mostly clear, with a low around 43. Breezy, with a west wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.
Wednesday
A 30 percent chance of showers after 4pm. Mostly cloudy, with a high near 53.
Wednesday Night
Showers. Low around 42. Breezy. Chance of precipitation is 80%.
Thursday
A 50 percent chance of showers before 10am. Mostly sunny, with a high near 48. Breezy.
Thursday Night
Mostly clear, with a low around 37.
Friday
Partly sunny, with a high near 51. Breezy.
Friday Night
Showers likely. Cloudy, with a low around 47. Breezy. Chance of precipitation is 70%.
Saturday
Showers likely. Partly sunny, with a high near 53. Chance of precipitation is 60%.
Saturday Night
Mostly cloudy, with a low around 39.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 47.
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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:
12:44 am EST Nov 3, 2025
Forecast Valid:
2am EST Nov 3, 2025-6pm EST Nov 9, 2025
 
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