South Portland, ME Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for South Portland, ME.

0 Active Alerts for South Portland

✅
No active weather alerts for South Portland at this time.
Subscribe to receive instant notifications when alerts are issued.

Current Conditions — South Portland, ME

PORTLAND (KPWM)

Cloudy

44.6 F
Humidity:81%
Wind Speed: 13.8 mph
Barometer:29.68 in
Dewpoint:39.2 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:38.1 F
May 3 2026, 10:25 AM EDT
Severe Weather Alerts
Severe Weather
 		Daily Weather Forecast
Daily Forecast
 		Observation Alert Monitoring
Observations
 		Storm Report Monitoring
Storm Reports

5-Day Forecast — South Portland, ME

Sunday

High 53 °F
Chance of Rain Showers
Sunday
Night
Low 41 °F
Partly Cloudy
Monday

High 62 °F
Partly Sunny
Monday
Night
Low 50 °F
Partly Cloudy
Tuesday

High 66 °F
Partly Sunny
Tuesday
Night
Low 53 °F
Chance of Rain
Wednesday

High 59 °F
Rain Showers Likely
Wednesday
Night
Low 48 °F
Rain
Thursday

High 53 °F
Rain Showers Likely

Detailed Forecast — South Portland, ME

Sunday
Chance of Rain Showers. High near 53°F. Wind 17 to 22 mph, with gusts as high as 33 mph.
Sunday Night
Partly Cloudy. Low around 41°F. Wind 8 to 18 mph, with gusts as high as 25 mph.
Monday
Partly Sunny. High near 62°F. Wind 10 to 14 mph, with gusts as high as 25 mph.
Monday Night
Partly Cloudy. Low around 50°F. Wind 9 to 10 mph, with gusts as high as 20 mph.
Tuesday
Partly Sunny. High near 66°F. Wind 12 to 18 mph, with gusts as high as 28 mph.
Tuesday Night
Chance of Rain. Low around 53°F. Wind 14 to 16 mph, with gusts as high as 25 mph.
Wednesday
Rain Showers Likely. High near 59°F. Wind 14 to 16 mph, with gusts as high as 25 mph.
Wednesday Night
Rain. Low around 48°F. Wind 8 to 13 mph, with gusts as high as 20 mph.
Thursday
Rain Showers Likely. High near 53°F. Wind 6 to 8 mph, with gusts as high as 16 mph.
Thursday Night
Rain Likely. Low around 44°F. Wind around 7 mph, with gusts as high as 14 mph.
Friday
Slight Chance of Rain Showers. High near 55°F. Wind 8 to 12 mph, with gusts as high as 22 mph.
Friday Night
Partly Cloudy. Low around 42°F. Wind 7 to 8 mph, with gusts as high as 16 mph.
Saturday
Slight Chance of Rain Showers. High near 55°F. Wind 6 to 10 mph, with gusts as high as 20 mph.
ME Radar
Current Radar • ME
Day 1 Outlook • May 3, 2026

Observation History — South Portland, ME

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
10:25 AM EDT 13.8 10.00 Cloudy -- 44.6 39.2 81% 38.1 NA 29.68 1005.1
10:20 AM EDT 12.7 10.00 Cloudy -- 44.6 39.2 81% 38.5 NA 29.69 1005.4
10:10 AM EDT 12.7 10.00 Cloudy -- 44.6 39.2 81% 38.5 NA 29.69 1005.4
10:05 AM EDT NW 11.5 10.00 Cloudy -- 44.6 39.2 81% 38.8 NA 29.69 1005.4
10:00 AM EDT 12.7 10.00 Cloudy -- 44.6 39.2 81% 38.5 NA 29.70 1005.8
09:50 AM EDT 9.2 10.00 Cloudy -- 44.6 39.2 81% 39.7 NA 29.70 1005.8
09:40 AM EDT 10.4 10.00 Cloudy -- 44.6 39.2 81% 39.2 NA 29.70 1005.8
09:35 AM EDT 12.7 G 19.6 10.00 Cloudy -- 44.6 39.2 81% 38.5 NA 29.70 1005.8
09:30 AM EDT 12.7 10.00 Cloudy -- 44.6 39.2 81% 38.5 NA 29.70 1005.8
09:25 AM EDT 12.7 10.00 Cloudy -- 44.6 39.2 81% 38.5 NA 29.71 1006.1
09:20 AM EDT 11.5 10.00 Cloudy -- 44.6 39.2 81% 38.8 NA 29.71 1006.1
09:05 AM EDT 12.7 G 18.4 10.00 Cloudy -- 44.6 41.0 87% 38.5 NA 29.70 1005.8
09:00 AM EDT 11.5 10.00 Cloudy -- 44.6 41.0 87% 38.8 NA 29.71 1006.1
08:50 AM EDT 11.5 G 17.3 10.00 Cloudy -- 44.6 41.0 87% 38.8 NA 29.71 1006.1
08:40 AM EDT 11.5 10.00 Cloudy -- 44.6 41.0 87% 38.8 NA 29.71 1006.1
08:25 AM EDT 10.4 10.00 Cloudy -- 44.6 39.2 81% 39.2 NA 29.71 1006.1
08:10 AM EDT 11.5 10.00 Cloudy -- 42.8 39.2 87% 36.5 NA 29.72 1006.4
08:05 AM EDT 12.7 10.00 Cloudy -- 42.8 39.2 87% 36.1 NA 29.72 1006.4
08:00 AM EDT 10.4 10.00 Cloudy -- 42.8 39.2 87% 37.0 NA 29.72 1006.4
07:50 AM EDT 10.4 10.00 Cloudy -- 42.8 41.0 93% 37.0 NA 29.72 1006.4
07:45 AM EDT 11.5 10.00 Cloudy -- 42.8 41.0 93% 36.5 NA 29.72 1006.4
07:40 AM EDT 8.1 10.00 Cloudy -- 42.8 41.0 93% 37.9 NA 29.72 1006.4
07:35 AM EDT 9.2 10.00 Cloudy -- 42.8 41.0 93% 37.4 NA 29.73 1006.8
07:25 AM EDT 9.2 10.00 Cloudy -- 42.8 41.0 93% 37.4 NA 29.73 1006.8

Regional Weather Observation

PORTLAND (KPWM)

Cloudy
44.6 F

FRYEBURG (KIZG)

Cloudy
42.8 F

AUBURN/LEWISTON (KLEW)

Cloudy
44.6 F

SANFORD MUNI (KSFM)

Partly Cloudy
46.4 F

ROCHESTER (KDAW)

Cloudy
46.4 F

WISCASSET (KIWI)

Light Rain
44.6 F
🔔    Sign-up to receive daily weather forecasts by email or text - subscribe