Hourly Weather Forecast - Southwest Harbor, ME

12 AM
22°F
0%
11mph
W
Clear
Humidity
78%
Feels like
10°F
Dew Point
16°F
1 AM
21°F
0%
11mph
W
Clear
Humidity
78%
Feels like
10°F
Dew Point
16°F
2 AM
21°F
0%
10mph
W
Clear
Humidity
79%
Feels like
10°F
Dew Point
16°F
3 AM
21°F
0%
10mph
WNW
Clear
Humidity
80%
Feels like
10°F
Dew Point
16°F
4 AM
21°F
0%
9mph
WNW
Clear
Humidity
80%
Feels like
10°F
Dew Point
16°F
5 AM
20°F
0%
9mph
WNW
Mostly Clear
Humidity
82%
Feels like
10°F
Dew Point
16°F
6 AM
20°F
0%
8mph
WNW
Mostly Clear
Humidity
83%
Feels like
10°F
Dew Point
16°F
7 AM
21°F
0%
8mph
WNW
Partly Cloudy
Humidity
81%
Feels like
11°F
Dew Point
16°F
7:00 AM
8 AM
23°F
0%
7mph
WNW
Partly Cloudy
Humidity
76%
Feels like
14°F
Dew Point
16°F
9 AM
25°F
0%
7mph
WNW
Mostly Cloudy
Humidity
70%
Feels like
17°F
Dew Point
17°F
10 AM
27°F
0%
7mph
WNW
Cloudy
Humidity
65%
Feels like
19°F
Dew Point
17°F
11 AM
28°F
0%
7mph
WNW
Cloudy
Humidity
62%
Feels like
21°F
Dew Point
17°F
12 PM
29°F
0%
7mph
W
Cloudy
Humidity
60%
Feels like
22°F
Dew Point
17°F
1 PM
29°F
0%
7mph
W
Cloudy
Humidity
60%
Feels like
23°F
Dew Point
18°F
2 PM
29°F
0%
6mph
W
Cloudy
Humidity
64%
Feels like
22°F
Dew Point
18°F
3 PM
28°F
0%
6mph
WSW
Mostly Cloudy
Humidity
69%
Feels like
21°F
Dew Point
19°F
3:54 PM
4 PM
27°F
0%
5mph
WSW
Mostly Cloudy
Humidity
74%
Feels like
21°F
Dew Point
19°F
5 PM
26°F
0%
5mph
W
Mostly Cloudy
Humidity
79%
Feels like
20°F
Dew Point
20°F
6 PM
26°F
10%
5mph
W
Mostly Cloudy
Humidity
80%
Feels like
21°F
Dew Point
21°F
7 PM
27°F
10%
5mph
W
Mostly Cloudy
Humidity
80%
Feels like
22°F
Dew Point
22°F
8 PM
28°F
10%
4mph
WNW
Partly Cloudy
Humidity
79%
Feels like
23°F
Dew Point
22°F
9 PM
28°F
10%
4mph
WNW
Partly Cloudy
Humidity
81%
Feels like
23°F
Dew Point
22°F
10 PM
27°F
10%
4mph
WNW
Partly Cloudy
Humidity
82%
Feels like
22°F
Dew Point
22°F
11 PM
26°F
10%
4mph
NW
Partly Cloudy
Humidity
84%
Feels like
21°F
Dew Point
22°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