Hourly Weather Forecast - Southwest Harbor, ME

10 AM
31°F
20%
7mph
NNE
Cloudy
Humidity
68%
Feels like
24°F
Dew Point
22°F
11 AM
31°F
20%
8mph
NNE
Cloudy
Humidity
68%
Feels like
24°F
Dew Point
22°F
12 PM
32°F
30%
9mph
NNE
30% Chance of Flurries
Humidity
66%
Feels like
24°F
Dew Point
22°F
1 PM
31°F
30%
9mph
NNE
30% Chance of Flurries
Humidity
67%
Feels like
23°F
Dew Point
22°F
2 PM
30°F
30%
10mph
NNE
30% Chance of Snow
Humidity
67%
Feels like
22°F
Dew Point
21°F
3 PM
29°F
30%
11mph
N
30% Chance of Snow
Humidity
66%
Feels like
20°F
Dew Point
19°F
3:54 PM
4 PM
28°F
30%
11mph
N
30 % Chance of Heavy Snow
Humidity
69%
Feels like
18°F
Dew Point
19°F
5 PM
26°F
30%
12mph
N
30 % Chance of Heavy Snow
Humidity
70%
Feels like
16°F
Dew Point
18°F
6 PM
26°F
30%
11mph
N
30 % Chance of Heavy Snow
Humidity
69%
Feels like
15°F
Dew Point
17°F
7 PM
26°F
10%
11mph
N
Cloudy
Humidity
66%
Feels like
15°F
Dew Point
16°F
8 PM
25°F
10%
12mph
N
Cloudy
Humidity
67%
Feels like
14°F
Dew Point
16°F
9 PM
24°F
0%
13mph
N
Mostly Cloudy
Humidity
65%
Feels like
12°F
Dew Point
14°F
10 PM
22°F
0%
13mph
NNW
Partly Cloudy
Humidity
66%
Feels like
9°F
Dew Point
12°F
11 PM
20°F
0%
14mph
NNW
Partly Cloudy
Humidity
68%
Feels like
7°F
Dew Point
11°F

Wind chill temperatures Monday A.M.

Cold Weather Chills the Nation Down to the Gulf

Extreme cold paired with their wind chill values will shiver much of the nation.

Snowfall forecast through Monday evening.

Mid-Atlantic, Great Lakes Snow Piles Up

Sunday Weather Outlook

Today's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

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

Cold Air Damming - Cause And Effects

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