Hourly Weather Forecast - South Portland, ME

12 AM
21°F
0%
8mph
WNW
Cloudy
Humidity
64%
Feels like
12°F
Dew Point
11°F
1 AM
21°F
10%
7mph
WNW
Cloudy
Humidity
66%
Feels like
12°F
Dew Point
11°F
2 AM
20°F
10%
7mph
WNW
Mostly Cloudy
Humidity
66%
Feels like
11°F
Dew Point
11°F
3 AM
20°F
10%
7mph
WNW
Partly Cloudy
Humidity
67%
Feels like
12°F
Dew Point
11°F
4 AM
21°F
10%
7mph
W
Partly Cloudy
Humidity
67%
Feels like
12°F
Dew Point
11°F
5 AM
21°F
10%
7mph
W
Mostly Clear
Humidity
67%
Feels like
13°F
Dew Point
12°F
6 AM
22°F
10%
6mph
W
Mostly Clear
Humidity
67%
Feels like
13°F
Dew Point
12°F
7 AM
22°F
10%
6mph
W
Mostly Clear
Humidity
67%
Feels like
14°F
Dew Point
13°F
7:12 AM
8 AM
24°F
10%
7mph
W
Mostly Sunny
Humidity
69%
Feels like
16°F
Dew Point
15°F
9 AM
26°F
20%
6mph
W
Partly Cloudy
Humidity
67%
Feels like
19°F
Dew Point
16°F
10 AM
27°F
20%
6mph
W
Cloudy
Humidity
65%
Feels like
20°F
Dew Point
17°F
11 AM
28°F
40%
6mph
WSW
40% Chance of Flurries
Humidity
65%
Feels like
22°F
Dew Point
18°F
12 PM
29°F
50%
6mph
WSW
50% Chance of Flurries
Humidity
67%
Feels like
23°F
Dew Point
20°F
1 PM
30°F
50%
6mph
SW
50% Chance of Snow
Humidity
68%
Feels like
24°F
Dew Point
21°F
2 PM
30°F
50%
6mph
SW
50% Chance of Snow
Humidity
69%
Feels like
24°F
Dew Point
21°F

Rainfall and Snowfall Totals Through Thursday

Flooding Rain, Heavy Snow and Winds Slam Northwest, North-Central U.S.

The atmospheric river this week will keep buffeting the Pacific Northwest with heavy rain, snow, and high winds.

Thursday's Weather Outlook

Thursday'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 person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

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

Cold Air Damming - Cause And Effects

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