5-Day Weather Forecast, South Portland (ME)

Fri   May 17

17°C | 10°C

E 18 km/h

broken clouds and no rain

hourly forecast

Sat   May 18

13°C | 9°C

E 14 km/h

1.2 mm

overcast and slight rain

hourly forecast

Sun   May 19

14°C | 9°C

NE 14 km/h

overcast and no rain

hourly forecast

Mon   May 20

17°C | 8°C

S 14 km/h

partly cloudy and no rain

Tue   May 21

21°C | 10°C

S 18 km/h

almost clear and no rain

See the 10-day forecast for popular European destinations

Europe Forecast

Get more details in the extended 10 day weather forecast for South Portland. Check out our May climate page to see if the current temperatures in South Portland is typical for this time of year.