Hourly Weather Forecast - South Portland, ME

12 AM
20°F
10%
17mph
W
Cloudy
Humidity
61%
Feels like
6°F
Dew Point
9°F
1 AM
20°F
10%
17mph
W
Cloudy
Humidity
62%
Feels like
5°F
Dew Point
9°F
2 AM
19°F
10%
17mph
W
Cloudy
Humidity
62%
Feels like
4°F
Dew Point
9°F
3 AM
19°F
10%
17mph
W
Cloudy
Humidity
63%
Feels like
4°F
Dew Point
8°F
4 AM
19°F
10%
16mph
W
Cloudy
Humidity
64%
Feels like
4°F
Dew Point
8°F
5 AM
18°F
10%
16mph
W
Mostly Cloudy
Humidity
64%
Feels like
4°F
Dew Point
8°F
6 AM
18°F
10%
15mph
W
Partly Cloudy
Humidity
66%
Feels like
3°F
Dew Point
8°F
7 AM
18°F
10%
15mph
W
Mostly Clear
Humidity
66%
Feels like
3°F
Dew Point
8°F
7:05 AM
8 AM
19°F
0%
15mph
W
Mostly Sunny
Humidity
64%
Feels like
4°F
Dew Point
8°F
9 AM
20°F
0%
15mph
W
Mostly Sunny
Humidity
60%
Feels like
7°F
Dew Point
9°F
10 AM
22°F
0%
15mph
W
Sunny
Humidity
57%
Feels like
9°F
Dew Point
9°F
11 AM
24°F
0%
15mph
W
Mostly Sunny
Humidity
55%
Feels like
11°F
Dew Point
10°F
12 PM
25°F
0%
16mph
W
Mostly Sunny
Humidity
55%
Feels like
13°F
Dew Point
11°F
1 PM
26°F
0%
16mph
W
Mostly Sunny
Humidity
55%
Feels like
14°F
Dew Point
12°F
2 PM
27°F
0%
15mph
W
Mostly Sunny
Humidity
55%
Feels like
15°F
Dew Point
13°F
3 PM
27°F
0%
15mph
W
Mostly Sunny
Humidity
55%
Feels like
15°F
Dew Point
13°F
4 PM
26°F
0%
13mph
W
Sunny
Humidity
57%
Feels like
15°F
Dew Point
13°F
4:04 PM
5 PM
26°F
0%
13mph
W
Clear
Humidity
58%
Feels like
14°F
Dew Point
13°F
6 PM
25°F
0%
12mph
W
Clear
Humidity
61%
Feels like
14°F
Dew Point
13°F
7 PM
24°F
0%
11mph
W
Clear
Humidity
62%
Feels like
13°F
Dew Point
13°F
8 PM
23°F
0%
11mph
W
Clear
Humidity
64%
Feels like
12°F
Dew Point
13°F
9 PM
22°F
10%
10mph
W
Clear
Humidity
66%
Feels like
12°F
Dew Point
13°F
10 PM
22°F
10%
9mph
W
Clear
Humidity
67%
Feels like
11°F
Dew Point
13°F
11 PM
21°F
10%
9mph
W
Clear
Humidity
68%
Feels like
11°F
Dew Point
12°F

Snow and ice forecast through Thursday A.M.

Snow Barrels Across the Northern U.S.

Low pressure will produce a swath of snow from Minnesota to Maine into Thursday.

Rainfall Forecast for Northwest through Thursday

Heavy Rain, Flooding Soaks The Northwest

Wednesday's Weather Outlook

Wednesday'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