Maine · NWS GYX office

Portland, ME weather

It is 28°F and clear at Portland, Portland International Jetport as of Oct 28, 8:00 AM EDT. Today: Mostly Sunny, high near 49°F, 2% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 2:31 AM EDT.

Updated Oct 28, 8:20 AM EDT (snapshot)

Current conditions

Temperature

28°F

Clear

Wind

Calm

Humidity 86% · dew point 25°F

Pressure · visibility

30.51 inHg

Visibility 10 mi

Observed at Portland, Portland International Jetport (KPWM), Oct 28, 8:00 AM EDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Portland forecast zone right now.

Around the NWS GYX forecast area

No active alerts in zones served by the GYX office near Portland.

From the alert snapshot of Oct 28, 2026, 8:14 AM EDT. No alerts are active anywhere in Maine.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Portland (local time)
TimeTempForecastPrecip. chanceWind
Wed 8 AM39°FMostly Sunny0%N 5 mph
Wed 9 AM40°FMostly Sunny1%N 5 mph
Wed 10 AM42°FMostly Sunny1% 0 mph
Wed 11 AM44°FMostly Sunny1% 0 mph
Wed 12 PM45°FMostly Sunny1%SE 5 mph
Wed 1 PM46°FMostly Sunny1%S 5 mph
Wed 2 PM47°FPartly Sunny1%S 5 mph
Wed 3 PM48°FMostly Sunny1%S 5 mph
Wed 4 PM49°FPartly Sunny1%S 5 mph
Wed 5 PM49°FPartly Sunny2%S 10 mph
Wed 6 PM49°FPartly Cloudy2%SW 10 mph
Wed 7 PM49°FPartly Cloudy2%SW 10 mph
Wed 8 PM49°FPartly Cloudy4%SW 10 mph
Wed 9 PM49°FMostly Clear5%SW 10 mph
Wed 10 PM48°FMostly Clear7%SW 10 mph
Wed 11 PM47°FMostly Clear4%SW 10 mph
Thu 12 AM47°FMostly Clear4%SW 10 mph
Thu 1 AM47°FMostly Clear4%SW 10 mph
Thu 2 AM47°FMostly Clear3%SW 10 mph
Thu 3 AM46°FMostly Clear3%SW 10 mph
Thu 4 AM46°FMostly Clear2%SW 10 mph
Thu 5 AM46°FClear2%SW 10 mph
Thu 6 AM46°FSunny2%SW 10 mph
Thu 7 AM46°FSunny2%SW 10 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Portland can differ.

7-day forecast

Today

High 49°F·Low 46°F

Mostly sunny, with a high near 49. South wind 0 to 10 mph.

Tonight: Mostly clear, with a low around 46. Southwest wind around 10 mph.

Thursday

High 60°F·Low 54°F

Sunny, with a high near 60. Southwest wind 10 to 15 mph.

Thursday Night: Partly cloudy, with a low around 54. Southwest wind 10 to 15 mph.

Friday

High 62°F·Low 44°F

Sunny, with a high near 62. West wind 10 to 15 mph.

Friday Night: Mostly clear, with a low around 44.

Saturday

High 52°F·Low 40°F

Sunny, with a high near 52.

Saturday Night: Clear, with a low around 40.

Sunday

High 55°F·Low 45°F

Sunny, with a high near 55.

Sunday Night: Partly cloudy, with a low around 45.

Monday

High 58°F·Low 45°F

A slight chance of rain showers after noon. Mostly sunny, with a high near 58.

Monday Night: A chance of rain showers. Mostly cloudy, with a low around 45. Chance of precipitation is 30%.

Tuesday

High 53°F·Low 43°F

A slight chance of rain showers. Partly sunny, with a high near 53.

Tuesday Night: A chance of rain showers. Mostly cloudy, with a low around 43.

Nearby cities

Larger cities in the area

Other cities in Cumberland County

See every city we cover in Maine, or check all active alerts.

About this forecast

Forecast office
Portland is served by the National Weather Service GYX forecast office, forecast zone MEZ024, county zone MEC005.
Location used
The Census Bureau's internal point for Portland (43.6332, -70.1853), in Cumberland County. Population: 69,568 (2024 estimate), number 1 of the 9 Maine cities on this site.
Radar
Nearest NWS radar: KGYX. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/43.6332,-70.1853 (forecast issued Oct 28, 2:31 AM EDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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