Prospect Harbor, ME Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Fri
Jul 17
Partly Cloudy
Close Hourly
-º / 54º 5% W 5 mph 72%
9pm Clear 68º 1% W 4 mph 54%
10pm Clear 65º 1% W 4 mph 59%
11pm Mostly Clear 63º 1% W 4 mph 63%
Sat
Jul 18
Mostly Cloudy
View Hourly
68º / 62º 24% S 17 mph 74%
12am Partly Cloudy 60º 1% W 4 mph 73%
1am Partly Cloudy 59º 1% WNW 4 mph 75%
2am Partly Cloudy 58º 2% WNW 4 mph 78%
3am Partly Cloudy 57º 3% W 3 mph 81%
4am Partly Cloudy 56º 5% WNW 2 mph 84%
5am Partly Cloudy 55º 5% W 2 mph 88%
6am Partly Cloudy 57º 5% SW 2 mph 87%
7am Partly Cloudy 60º 4% SSW 2 mph 82%
8am Mostly Cloudy 63º 2% SSW 4 mph 75%
9am Partly Cloudy 66º 1% SSW 6 mph 68%
10am Partly Cloudy 67º 1% S 8 mph 63%
11am Mostly Cloudy 67º 1% S 8 mph 64%
12pm Cloudy 65º 3% S 9 mph 69%
1pm Cloudy 66º 4% S 10 mph 69%
2pm Cloudy 65º 9% S 11 mph 74%
3pm Cloudy 64º 10% S 12 mph 81%
4pm Cloudy 64º 24% S 14 mph 81%
5pm Cloudy 65º 22% S 15 mph 81%
6pm Showers 64º 41% S 17 mph 81%
7pm Rain 64º 72% S 18 mph 83%
8pm Rain 63º 88% SSW 18 mph 87%
9pm Rain 63º 70% SSW 19 mph 92%
10pm Thunderstorms/Wind 63º 64% SSW 20 mph 94%
11pm Rain 63º 76% SSW 19 mph 94%
Sun
Jul 19
Mostly Sunny
View Hourly
74º / 56º 20% WNW 16 mph 63%
12am Showers 63º 54% SSW 17 mph 95%
1am Showers 63º 45% SSW 16 mph 95%
2am Few Showers 64º 31% SW 15 mph 94%
3am Foggy 64º 18% SW 14 mph 96%
4am Foggy 63º 18% SW 12 mph 96%
5am Foggy 64º 15% WSW 11 mph 96%
6am Cloudy 64º 22% WSW 11 mph 96%
7am Partly Cloudy 65º 21% W 12 mph 91%
8am Mostly Sunny 65º 7% WNW 14 mph 87%
9am Sunny 68º 2% WNW 14 mph 75%
10am Partly Cloudy 69º 1% WNW 16 mph 67%
11am Sunny 71º 0% WNW 16 mph 60%
12pm Mostly Sunny 72º 0% WNW 16 mph 57%
1pm Mostly Sunny 72º 0% WNW 16 mph 55%
2pm Sunny 73º 0% WNW 16 mph 53%
3pm Sunny 72º 0% WNW 16 mph 53%
4pm Mostly Sunny 72º 0% WNW 15 mph 52%
5pm Sunny 73º 0% WNW 14 mph 51%
6pm Sunny 72º 0% WNW 14 mph 52%
7pm Mostly Sunny 70º 0% WNW 12 mph 54%
8pm Sunny 68º 0% WNW 10 mph 57%
Mon
Jul 20
Mostly Sunny 71º / 57º 1% WSW 14 mph 60%
Tue
Jul 21
PM Showers 67º / 60º 39% SSE 14 mph 78%
Wed
Jul 22
Rain 68º / 59º 89% SSW 15 mph 92%
Thu
Jul 23
AM Showers 70º / 58º 47% SW 11 mph 77%
Fri
Jul 24
Partly Cloudy 71º / 57º 24% SSW 9 mph 77%

Weather Radar for Prospect Harbor, ME See Radar

* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Prospect Harbor, ME

Tonight
Low : 56ºF
Variable winds 5 kt or less. Partly cloudy. Seas around 2 ft.
Saturday
High : 67ºF
Variable winds less than 5 kt becoming S 8 to 13 kt in the morning. Winds could gust as high as 19 kt. Isolated showers after 5pm. Patchy smoke after 3pm. Seas 1 to 2 ft.
Saturday Night
Low : 58ºF
SSW wind 15 to 19 kt, with gusts as high as 26 kt. Scattered showers and thunderstorms. Patchy smoke. Seas 5 to 6 ft.
Sunday
High : 71ºF
W wind 12 to 15 kt. Isolated showers before 7am. Seas 3 to 4 ft.
Sunday Night
Low : 57ºF
W wind around 9 kt. Mostly clear. Seas 2 to 3 ft.
Monday
High : 69ºF
W wind 7 to 11 kt becoming SW in the afternoon. Sunny. Seas 2 to 3 ft.
Monday Night
Low : 55ºF
SW wind 6 to 9 kt. Partly cloudy. Seas 2 to 3 ft.
Tuesday
High : 63ºF
S wind 8 to 11 kt. A slight chance of showers. Seas 2 to 3 ft.
Tuesday Night
Low : 56ºF
SSE wind 12 to 14 kt, with gusts as high as 20 kt. Showers likely, with thunderstorms also possible after 2am. Seas 3 to 4 ft.

NOAA Buoy Data Near Prospect Harbor, ME See Map

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    Wind Speed Forecast for Prospect Harbor, ME

    SaturdaySunday
    Wind Speed (MPH) 44261015191611141614
    1am5am9am1pm5pm9pm1am5am9am1pm5pm9pm
    MPH 44261015191611141614
    DIR WWNWWSSWSSSSWSSWWSWWNWWNWWNW

    Current Weather Conditions In Prospect Harbor, ME

    As Of: 5 minutes ago

    • 68ºF
    • 68ºF
    • 4mph
    • 0º (W)
    • 4mph
    • Clear
    • 10mi
    • 29.94"
    • 54%
    • 0ºF

    The weather right now in Prospect Harbor, ME is Clear. The current temperature is 68°F, and the expected high and low for today, Friday, July 17, 2026, are -° high temperature and 54°F low temperature. The wind is currently blowing at 4 miles per hour, and coming from the West. The wind is gusting to 4 mph. With the wind and the atmosphere the temperature feels like 68° Fahrenheit. Expected precipitation is 1 percent, with current humidity at 54 percent, and air pressure at 29.94 in. Visibility is 10 nautical miles. There are 2 current weather alert(s).

    Weather Alerts
    Air Quality Alert - 3:41pm Fri Jul 17 2026

    ...AIR QUALITY ALERT IN EFFECT FROM 10 AM SATURDAY TO MIDNIGHT EDT SATURDAY NIGHT...

    The Maine Department of Environmental Protection's Bureau of Air
    Quality has issued an Air Quality Alert for particle pollution from
    10 AM Saturday to midnight EDT Saturday night.

    Particle pollution levels are expected to rise into the Unhealthy for
    Sensitive Groups range during the day on Saturday. Smoke from
    wildfires in western Ontario and Manitoba is expected to move back
    into Maine during the day on Saturday. Moderate levels of ozone are
    also expected for the Mid-Coast including the high elevations of
    Acadia National Park.

    The Maine Department of Environmental Protection recommends that
    individuals consider limiting strenuous outdoor physical activity to
    reduce the risk of adverse health effects. People who may be
    especially sensitive to the effects of elevated levels of pollutants
    include the very young, older adults, those who work outdoors, those
    with pre-existing respiratory problems such as asthma, and those
    with heart disease. It is okay to be active outdoors. But if you
    experience symptoms such as shortness of breath, coughing, throat
    irritation or an uncomfortable sensation in your chest, please
    consider limiting the intensity and duration of your outdoor
    activities.

    A toll free air quality hotline has been established so Maine
    residents can stay informed on the air quality situations. The toll
    free number is: 1-800-223-1196.

    Additionally the Maine Department of Environmental Protection has
    the air quality forecast available on the web at
    www.maine.gov/dep/air/aqforecast.

    Small Craft Advisory - 1:30pm Fri Jul 17 2026

    ...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM SATURDAY TO 2 PM EDT SUNDAY...

    WHAT: Southwest winds 15 to 25 kt with gusts up to 30 kt and
    seas 5 to 9 ft expected.

    WHERE: Coastal Waters from Eastport, ME to Schoodic Point, ME
    out 25 NM, Coastal Waters from Schoodic Point, ME to
    Stonington, ME out 25 NM and Intra Coastal Waters from
    Schoodic Point, ME to Stonington, ME.

    WHEN: From 3 PM Saturday to 2 PM EDT Sunday.

    IMPACTS: Conditions will be hazardous to small craft.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Inexperienced mariners, especially those operating smaller
    vessels, should avoid navigating in hazardous conditions.

    &&