Hourly Weather Forecast - Southwest Harbor, ME

12 AM
15°F
20%
8mph
WNW
Mostly Cloudy
Humidity
81%
Feels like
4°F
Dew Point
10°F
1 AM
15°F
20%
7mph
WNW
Mostly Cloudy
Humidity
83%
Feels like
4°F
Dew Point
10°F
2 AM
15°F
20%
7mph
WNW
Mostly Cloudy
Humidity
84%
Feels like
5°F
Dew Point
11°F
3 AM
16°F
20%
7mph
WNW
Mostly Cloudy
Humidity
85%
Feels like
6°F
Dew Point
12°F
4 AM
17°F
20%
7mph
WNW
Mostly Cloudy
Humidity
84%
Feels like
7°F
Dew Point
13°F
5 AM
17°F
20%
7mph
WNW
Mostly Cloudy
Humidity
85%
Feels like
8°F
Dew Point
13°F
6 AM
17°F
20%
7mph
WNW
Mostly Cloudy
Humidity
87%
Feels like
7°F
Dew Point
14°F
7 AM
17°F
20%
7mph
WNW
Mostly Cloudy
Humidity
88%
Feels like
7°F
Dew Point
14°F
7:02 AM
8 AM
18°F
10%
8mph
WNW
Partly Cloudy
Humidity
85%
Feels like
8°F
Dew Point
14°F
9 AM
21°F
10%
8mph
WNW
Mostly Sunny
Humidity
78%
Feels like
11°F
Dew Point
15°F
10 AM
24°F
10%
9mph
WNW
Sunny
Humidity
70%
Feels like
15°F
Dew Point
15°F
11 AM
26°F
10%
9mph
WNW
Sunny
Humidity
65%
Feels like
17°F
Dew Point
16°F
12 PM
28°F
10%
10mph
WNW
Mostly Sunny
Humidity
63%
Feels like
19°F
Dew Point
17°F
1 PM
28°F
10%
11mph
WNW
Mostly Sunny
Humidity
64%
Feels like
19°F
Dew Point
18°F
2 PM
27°F
20%
10mph
WNW
Partly Cloudy
Humidity
67%
Feels like
18°F
Dew Point
18°F
3 PM
26°F
20%
10mph
WNW
Mostly Sunny
Humidity
72%
Feels like
17°F
Dew Point
18°F
3:55 PM
4 PM
25°F
20%
9mph
WNW
Mostly Clear
Humidity
74%
Feels like
16°F
Dew Point
18°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