Hourly Weather Forecast - Southwest Harbor, ME

12 AM
18°F
0%
18mph
W
Partly Cloudy
Humidity
66%
Feels like
2°F
Dew Point
9°F
1 AM
18°F
0%
19mph
W
Partly Cloudy
Humidity
67%
Feels like
2°F
Dew Point
9°F
2 AM
18°F
0%
19mph
W
Partly Cloudy
Humidity
67%
Feels like
1°F
Dew Point
9°F
3 AM
17°F
0%
19mph
W
Mostly Cloudy
Humidity
67%
Feels like
1°F
Dew Point
9°F
4 AM
18°F
0%
19mph
W
Cloudy
Humidity
67%
Feels like
1°F
Dew Point
9°F
5 AM
18°F
0%
19mph
W
Mostly Cloudy
Humidity
68%
Feels like
1°F
Dew Point
9°F
6 AM
18°F
0%
19mph
W
Partly Cloudy
Humidity
68%
Feels like
2°F
Dew Point
10°F
6:59 AM
7 AM
19°F
0%
19mph
W
Partly Cloudy
Humidity
68%
Feels like
3°F
Dew Point
10°F
8 AM
20°F
0%
19mph
W
Mostly Sunny
Humidity
67%
Feels like
5°F
Dew Point
11°F
9 AM
21°F
0%
19mph
W
Mostly Sunny
Humidity
67%
Feels like
6°F
Dew Point
12°F
10 AM
22°F
0%
20mph
W
Mostly Sunny
Humidity
65%
Feels like
7°F
Dew Point
12°F
11 AM
23°F
0%
19mph
W
Mostly Sunny
Humidity
65%
Feels like
9°F
Dew Point
13°F
12 PM
24°F
0%
20mph
W
Mostly Sunny
Humidity
64%
Feels like
10°F
Dew Point
14°F
1 PM
24°F
0%
19mph
W
Partly Cloudy
Humidity
64%
Feels like
10°F
Dew Point
14°F
2 PM
24°F
0%
19mph
W
Mostly Sunny
Humidity
65%
Feels like
10°F
Dew Point
14°F
3 PM
24°F
0%
18mph
W
Mostly Sunny
Humidity
67%
Feels like
10°F
Dew Point
15°F
3:54 PM
4 PM
23°F
0%
17mph
W
Mostly Clear
Humidity
68%
Feels like
9°F
Dew Point
14°F
5 PM
22°F
0%
17mph
W
Mostly Clear
Humidity
71%
Feels like
8°F
Dew Point
14°F
6 PM
22°F
0%
15mph
W
Mostly Clear
Humidity
71%
Feels like
9°F
Dew Point
15°F
7 PM
23°F
0%
14mph
W
Mostly Clear
Humidity
70%
Feels like
10°F
Dew Point
15°F
8 PM
23°F
0%
13mph
W
Mostly Clear
Humidity
70%
Feels like
11°F
Dew Point
15°F
9 PM
23°F
0%
13mph
W
Mostly Clear
Humidity
72%
Feels like
11°F
Dew Point
15°F
10 PM
22°F
0%
12mph
W
Clear
Humidity
74%
Feels like
11°F
Dew Point
15°F
11 PM
22°F
0%
11mph
W
Clear
Humidity
74%
Feels like
10°F
Dew Point
15°F

Snow and ice forecast through Friday A.M.

Multiple Snow Threats Across the Northern U.S.

Multiple systems will bring snow across the Northern U.S. through the end of the week.

Rainfall Forecast for Northwest through Friday A.M.

Unrelenting Rains Soak the Northwest

Thursday's Weather Outlook

Thursday's Weather Outlook

Weekly Drought Map for December 4, 2025

Active Week of Weather Leads to Mixed Drought Results

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide