Pennsylvania · NWS PHI office

Norristown, PA weather

It is 39°F and clear at Pottstown, Pottstown Limerick Airport as of Oct 28, 5:05 AM EDT. Overnight: Partly Cloudy, low near 41°F. Forecast from the National Weather Service, issued Oct 28, 4:08 AM EDT.

Updated Oct 28, 5:23 AM EDT (snapshot)

Current conditions

Temperature

39°F

Clear

Wind

Calm

Humidity 100%

Pressure · visibility

30.44 inHg

Visibility 9 mi

Observed at Pottstown, Pottstown Limerick Airport (KPTW), Oct 28, 5:05 AM EDT. Station readings can lag or be missing.

Alerts for this area

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

Around the NWS PHI forecast area

No active alerts in zones served by the PHI office near Norristown.

From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. No alerts are active anywhere in Pennsylvania.

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 Norristown (local time)
TimeTempForecastPrecip. chanceWind
Wed 7 AM41°FPatchy Fog0% 0 mph
Wed 8 AM42°FPatchy Fog0% 0 mph
Wed 9 AM48°FMostly Sunny0% 0 mph
Wed 10 AM53°FMostly Sunny0% 0 mph
Wed 11 AM57°FMostly Sunny0% 0 mph
Wed 12 PM60°FMostly Sunny0%SE 5 mph
Wed 1 PM62°FMostly Sunny0%SE 5 mph
Wed 2 PM64°FPartly Sunny0%SE 5 mph
Wed 3 PM64°FPartly Sunny0%SE 5 mph
Wed 4 PM64°FMostly Cloudy0%SE 5 mph
Wed 5 PM63°FMostly Cloudy0% 0 mph
Wed 6 PM61°FMostly Cloudy0% 0 mph
Wed 7 PM59°FMostly Cloudy0% 0 mph
Wed 8 PM56°FMostly Cloudy0% 0 mph
Wed 9 PM55°FPartly Cloudy0% 0 mph
Wed 10 PM53°FMostly Clear0% 0 mph
Wed 11 PM52°FMostly Clear0% 0 mph
Thu 12 AM51°FClear0% 0 mph
Thu 1 AM51°FMostly Clear0% 0 mph
Thu 2 AM50°FMostly Clear0% 0 mph
Thu 3 AM49°FPartly Cloudy0% 0 mph
Thu 4 AM49°FPartly Cloudy0% 0 mph
Thu 5 AM48°FPartly Cloudy0% 0 mph
Thu 6 AM48°FPartly Sunny0% 0 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 Norristown can differ.

7-day forecast

Overnight

Low 41°F

Partly cloudy, with a low around 41. Wind around 0 mph.

Wednesday

High 66°F·Low 45°F

Partly sunny, with a high near 66. East wind 0 to 5 mph.

Wednesday Night: Partly cloudy, with a low around 45. Southeast wind around 0 mph.

Thursday

High 71°F·Low 51°F

Mostly sunny, with a high near 71. West wind 0 to 5 mph.

Thursday Night: Partly cloudy, with a low around 51. Southwest wind 0 to 5 mph.

Friday

High 72°F·Low 42°F

Sunny, with a high near 72.

Friday Night: Mostly clear, with a low around 42.

Saturday

High 64°F·Low 43°F

Mostly sunny, with a high near 64.

Saturday Night: Mostly cloudy, with a low around 43.

Sunday

High 68°F·Low 48°F

Partly sunny, with a high near 68.

Sunday Night: A slight chance of rain showers after 1am. Mostly cloudy, with a low around 48.

Monday

High 68°F·Low 50°F

A chance of rain showers. Mostly cloudy, with a high near 68. Chance of precipitation is 30%.

Monday Night: A chance of rain showers. Mostly cloudy, with a low around 50. Chance of precipitation is 40%.

Tuesday

High 67°F

A chance of rain showers. Partly sunny, with a high near 67.

Nearby cities

Larger cities in the area

Other cities in Montgomery County

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

About this forecast

Forecast office
Norristown is served by the National Weather Service PHI forecast office, forecast zone PAZ104, county zone PAC091.
Location used
The Census Bureau's internal point for Norristown (40.1221, -75.3399), in Montgomery County. Population: 36,075 (2024 estimate), number 14 of the 30 Pennsylvania cities on this site.
Radar
Nearest NWS radar: KDIX. 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/40.1221,-75.3399 (forecast issued Oct 28, 4:08 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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