Local weather forecast

Weather in South Portland, ME

Updated 2026-09-26 08:45 local time · ZIP codes 04106

Overcast
Now58°F

Overcast

High / Low63° / 57°
Rain chance82%
Wind19 mph
Weather alerts

Active alerts

1
High Surf Advisory issued September 26 at 2:22AM EDT until September 27 at 8:00PM EDT by NWS Gray ME

* WHAT...Large breaking waves of 6 to 10 feet and a high risk of rip currents. * WHERE...Coastal Cumberland, Sagadahoc, Lincoln and Knox Counties. * WHEN...Until 8 PM EDT Sunday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion.

Safety instructions

Inexperienced swimmers should remain out of the water due to dangerous surf conditions.

Hourly

Next hours

NowOvercast58°19% rain
10 AMOvercast59°18% rain
11 AMOvercast60°17% rain
12 PMOvercast62°15% rain
1 PMOvercast63°15% rain
2 PMPatchy rain nearby63°16% rain
3 PMLight rain61°58% rain
4 PMLight drizzle60°57% rain
5 PMLight rain59°67% rain
6 PMLight rain58°69% rain
7 PMLight drizzle58°61% rain
8 PMLight drizzle58°64% rain
Forecast

3-day weather forecast

Today2026-09-26
Overcast
63° 57°Overcast
Rain 82%Gust 25 mph
Tomorrow2026-09-27
Light rain shower
58° 55°Light rain shower
Rain 90%Gust 29 mph
Monday2026-09-28
Light rain shower
57° 53°Light rain shower
Rain 93%Gust 25 mph
Conditions

Weather details

Feels like47°F
Humidity73%
Pressure30.04 inHg
Visibility6 mi
Wind19 mph NNE
Wind gusts31 mph
Precipitation0.00 in
UV index0
Daylight

Sunrise, sunset and moon

Sunrise06:32 AM
Sunset06:31 PM
Moonrise06:18 PM
Moon phaseFull Moon
Next 24 hours

Key weather changes ahead

Warmest hour2 PM · 63°F
Coolest hour9 PM · 57°F
Highest rain chance6 PM · 69%
Strongest gusts10 PM · 41 mph
Practical guide

Weather insights for today

Take an umbrella

Rain chance reaches about 69% over the next 12 hours.

A jacket or sweater is a good idea

It feels like 47°F with winds near 19 mph.

Best window: 12 PM

62°F, 15% rain chance and 17 mph wind.

Use extra caution while driving

Visibility is around 6 mi; gusts may reach 40 mph.

Running conditions are less comfortable

Current temperature is 58°F, wind 19 mph, rain chance up to 69%.

Low UV protection needs

UV index is 0.

Local weather characteristics in South Portland

Maine has cold winters, mild summers and strong coastal influence in the east. Snow, nor'easters and rapid temperature changes are common in the colder season.

South Portland is part of the Northeast weather region. The forecast point is near 43.64°N latitude and 70.24°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.

South Portland weather today

Overcast and 58°F in South Portland, ME. Today's high is 63°F with a 82% rain chance. Winds are around 19 mph with gusts near 31 mph. Relative humidity is 73%, pressure is 30.04 inHg, and visibility is about 6 miles.

Tonight and tomorrow in South Portland

Sunrise is at 06:32 AM and sunset is at 06:31 PM. Tomorrow's forecast calls for Light rain shower with a high near 58°F and a low near 55°F. The maximum rain chance is 90%.

Nearby

Weather near South Portland

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