South Harpswell, ME Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Mon
Jul 13 		Partly Cloudy
Close Hourly 		-º / 66º 7% SW 17 mph 83%
7pm Mostly Sunny 71º 2% SSW 15 mph 79%
8pm Partly Cloudy 71º 4% SSW 16 mph 81%
9pm Mostly Cloudy 70º 5% SSW 14 mph 84%
10pm Mostly Cloudy 70º 5% SSW 12 mph 82%
11pm Partly Cloudy 70º 4% SW 12 mph 82%
Tue
Jul 14 		AM Clouds/PM Sun
View Hourly 		83º / 69º 5% SW 16 mph 67%
12am Mostly Cloudy 70º 2% SW 11 mph 84%
1am Mostly Cloudy 69º 4% SW 10 mph 85%
2am Partly Cloudy 69º 7% WSW 8 mph 85%
3am Partly Cloudy 69º 7% WSW 7 mph 86%
4am Partly Cloudy 68º 7% WSW 7 mph 86%
5am Partly Cloudy 68º 7% WSW 6 mph 86%
6am Mostly Cloudy 67º 6% WSW 6 mph 87%
7am Mostly Cloudy 70º 6% WSW 6 mph 82%
8am Partly Cloudy 72º 5% WSW 6 mph 76%
9am Cloudy 74º 4% WSW 7 mph 72%
10am Mostly Cloudy 76º 3% SSW 9 mph 69%
11am Cloudy 76º 3% SSW 11 mph 66%
12pm Mostly Cloudy 78º 3% SSW 12 mph 63%
1pm Partly Cloudy 79º 3% SSW 14 mph 61%
2pm Partly Cloudy 79º 3% SSW 16 mph 63%
3pm Partly Cloudy 79º 3% SSW 16 mph 63%
4pm Mostly Cloudy 80º 3% SSW 15 mph 61%
5pm Mostly Cloudy 79º 3% SSW 14 mph 63%
6pm Partly Cloudy 82º 3% SW 13 mph 60%
7pm Partly Cloudy 82º 2% SW 10 mph 59%
8pm Mostly Sunny 82º 17% WSW 10 mph 61%
9pm Partly Cloudy 79º 12% WSW 9 mph 67%
10pm Isolated Thunderstorms 78º 31% WSW 8 mph 70%
11pm Scattered Thunderstorms 76º 44% WSW 7 mph 76%
Wed
Jul 15 		Mostly Sunny
View Hourly 		84º / 64º 16% WNW 15 mph 54%
12am Showers 75º 52% WNW 8 mph 81%
1am Scattered Thunderstorms 74º 49% WNW 6 mph 80%
2am Cloudy 74º 20% WNW 6 mph 81%
3am Mostly Cloudy 73º 18% WNW 6 mph 84%
4am Mostly Cloudy 72º 10% W 6 mph 86%
5am Cloudy 71º 24% WNW 5 mph 89%
6am Cloudy 70º 16% WNW 6 mph 88%
7am Mostly Cloudy 72º 14% NW 7 mph 85%
8am Partly Cloudy 75º 7% WNW 8 mph 79%
9am Partly Cloudy 76º 17% NW 10 mph 74%
10am Mostly Sunny 77º 3% NW 11 mph 65%
11am Sunny 80º 2% WNW 11 mph 55%
12pm Sunny 81º 1% WNW 12 mph 47%
1pm Mostly Sunny 82º 0% WNW 13 mph 43%
2pm Mostly Sunny 83º 0% WNW 13 mph 41%
3pm Sunny 83º 0% WNW 15 mph 41%
4pm Sunny 83º 0% WNW 14 mph 40%
5pm Sunny 83º 0% WNW 14 mph 40%
6pm Sunny 82º 0% WNW 13 mph 42%
Thu
Jul 16 		Mostly Sunny 80º / 61º 24% W 14 mph 54%
Fri
Jul 17 		Mostly Sunny 78º / 60º 1% WNW 12 mph 50%
Sat
Jul 18 		Mostly Sunny 75º / 62º 4% SW 12 mph 58%
Sun
Jul 19 		Showers 74º / 61º 56% SE 11 mph 70%
Mon
Jul 20 		PM Showers 75º / 63º 33% SSW 12 mph 70%

Weather Radar for South Harpswell, ME See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for South Harpswell, ME

This Afternoon
High : 77ºF
S wind around 15 kt, with gusts as high as 30 kt. Mostly sunny. Seas 1 ft or less.
Tonight
Low : 67ºF
SW wind 12 to 15 kt decreasing to 10 to 13 kt after midnight. Winds could gust as high as 30 kt. A slight chance of showers between 8pm and midnight. Seas 1 ft or less.
Tuesday
High : 82ºF
SSW wind 10 to 13 kt increasing to 12 to 15 kt in the afternoon. Winds could gust as high as 30 kt. Mostly cloudy, then gradually becoming sunny. Seas 1 ft or less.
Tuesday Night
Low : 70ºF
WSW wind around 10 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms between 10pm and 2am, then a chance of showers after 2am. Seas 1 ft or less.
Wednesday
High : 81ºF
WNW wind 10 to 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas 1 ft or less.
Wednesday Night
Low : 66ºF
W wind 5 to 10 kt. Mostly clear. Seas 1 ft or less.
Thursday
High : 76ºF
WSW wind 10 to 15 kt, with gusts as high as 25 kt. Sunny. Seas 1 ft or less.
Thursday Night
Low : 63ºF
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Friday
High : 75ºF
W wind 5 to 10 kt. Sunny. Seas 1 ft or less.

NOAA Buoy Data Near South Harpswell, ME See Map

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    Wind Speed Forecast for South Harpswell, ME

    MondayTuesdayWednesday
    Wind Speed (MPH) 1512761116107671115
    11pm3am7am11am3pm7pm11pm3am7am11am3pm7pm
    MPH 1512761116107671115
    DIR SSWSWWSWWSWSSWSSWSWWSWWNWNWWNWWNW

    Current Weather Conditions In South Harpswell, ME

    As Of: 21 minutes ago

    • 71ºF
    • 71ºF
    • 15mph
    • 0º (SSW)
    • 24mph
    • Mostly Sunny
    • 10mi
    • 30.00"
    • 79%
    • 0ºF

    The weather right now in South Harpswell, ME is Mostly Sunny. The current temperature is 71°F, and the expected high and low for today, Monday, July 13, 2026, are -° high temperature and 66°F low temperature. The wind is currently blowing at 15 miles per hour, and coming from the South Southwest. The wind is gusting to 24 mph. With the wind and the atmosphere the temperature feels like 71° Fahrenheit. Expected precipitation is 2 percent, with current humidity at 79 percent, and air pressure at 30 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Heat Advisory - 2:22pm Mon Jul 13 2026

    ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT TUESDAY...

    WHAT: Heat index values in the mid to upper 90s expected.

    WHERE: Coastal Cumberland County.

    WHEN: From 11 AM to 8 PM EDT Tuesday.

    IMPACTS: Hot temperatures and high humidity may cause heat
    illnesses.

    ADDITIONAL DETAILS: Low temperatures in the lower 70s will cause
    heat stress to accumulate overnight Tuesday, ahead of another hot
    day Wednesday.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Drink plenty of fluids, stay in an air-conditioned room, stay out of
    the sun, and check up on relatives and neighbors.

    Take extra precautions when outside. Wear lightweight and loose
    fitting clothing. Try to limit strenuous activities to early morning
    or evening. Take action when you see symptoms of heat exhaustion and
    heat stroke.

    &&