Norristown, PA Weather

Montgomery County9:53 AM EDT40.12°N, 75.34°WElevation 157 ft

Current conditions

Clear
44°
Clear
Feels like 44°
High 67°·Low 38°
WindCalm
Humidity76%
Dew point37°
Pressure30.60 inHg
Visibility10.0 mi
Cloud cover18%
UV index1 Low
Sunrise7:23 AM
Sunset6:09 PM

Observed at Philadelphia, Northeast Philadelphia Airport · 59 min ago

Forecast

10-day

  • Sunday

    Areas of frost before 9am. Sunny, with a high near 67. Northwest wind around 0 mph.

  • Sunday Night

    Clear, with a low around 38. Northwest wind around 0 mph.

  • Monday

    Sunny, with a high near 69. West wind 0 to 5 mph.

National Weather Service forecast updated 1 day ago.

Hourly

Hourly forecast
  1. Now Sunny 42°
  2. 10 AM Sunny 51°
  3. 11 AM Sunny 57°
  4. 12 PM Sunny 60°
  5. 1 PM Sunny 63°
  6. 2 PM Sunny 64°
  7. 3 PM Sunny 65°
  8. 4 PM Sunny 66°
  9. 5 PM Sunny 64°
  10. 6 PM Clear 62°
  11. 7 PM Clear 57°
  12. 8 PM Clear 52°
  13. 9 PM Clear 49°
  14. 10 PM Clear 47°
  15. 11 PM Clear 45°
  16. Mon12 AM Clear 44°
  17. 1 AM Clear 43°
  18. 2 AM Mostly Clear 42°
  19. 3 AM Mostly Clear 41°
  20. 4 AM Mostly Clear 40°
  21. 5 AM Mostly Clear 40°
  22. 6 AM Sunny 38°
  23. 7 AM Sunny 38°
  24. 8 AM Sunny 40°

10-day forecast

Details
  1. SatOct 24 Sunny Sunny36°64°
  2. TodayOct 25 Areas Of Frost then Sunny Areas Of Frost then Sunny38°67°
  3. MonOct 26 Sunny Sunny46°69°
  4. TueOct 27 Sunny Sunny39°64°
  5. WedOct 28 Mostly Sunny Mostly Sunny43°63°
  6. ThuOct 29 Mostly Sunny Mostly Sunny49°69°
  7. FriOct 30 Sunny Sunny47°71°
  8. SatOct 31 Partly cloudy Partly cloudy51°74°
  9. SunNov 1 Cloudy Cloudy53°71°
  10. MonNov 2 Partly cloudy Partly cloudy0.03 in60°76°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
Open the National Weather Service radar (the map here needs JavaScript).

Weather news near Norristown

More weather news

Air quality

85
Moderate
Fine particles (PM2.5)

Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Forecast

  • SunModerate (65)
  • MonGood (50)
  • TueGood

Philadelphia, PA reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:23 AM
Sunset 6:09 PM
Daylight 10 h 45 min (−2 min 26 s tomorrow)
Full Moon · 99% lit
Moonrise 5:28 PM Moonset 6:45 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low64° / 46°
Record high78° (2021)
Record low25° (1962)
Wettest3.82 in (1980)
Yesterday63° / 40°
Month to date2.82 in (normal 2.75 in)

Philadelphia Area, records since 1873. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in PHI, issued 6 hrs ago

What Has Changed

All sections updated. No significant changes.

Key Messages

1. Another round of frost and freeze impacts are expected tonight where the growing season continues.

2. Spotty minor tidal flooding may linger today.

Discussion

KEY MESSAGE 1...Another round of frost and freeze impacts are expected tonight where the growing season continues.

Little change in the overall synoptic pattern is expected today and tonight with strong surface high pressure essentially overhead. The high will weaken Monday and drift to the south. Slow moderation of temperatures begin today and continue Monday.

Frost Advisories and Freeze Warnings will continue into the morning with clear skies and calm air across the area. We'll see lows in the 30s across most areas with 40s along the shore. Colder temps, perhaps some upper 20s, may be observed in the Pine Barrens and up across the deeper valleys of North NJ and across into the southern Poconos. Like yesterday, we'll evaluate the overnight lows to determine if more counties will join the 'Growing Season Ended' list. Check out our recent Public Information Statements to see the Current status of the growing season.

Temperatures today will be a few degrees milder than on Saturday under sunny skies. With skies remaining clear tonight, another round of frost is possible tonight into Monday morning. Lows around the region will mainly be in the mid 30s to low 40s. Depending on how Sat night's frost advisories pan out will determine where frost advisories may be warranted for the upcoming night...more details to come in future updates.

KEY MESSAGE 2...Spotty minor tidal flooding may linger today.

Water levels are continuing to decrease in the back bay areas of Ocean County, NJ and Sussex County, Delaware and no further widespread tidal flooding is expected. Spotty minor tidal flooding may linger in the back bays though today.

Aviation

The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

thru 12Z Sunday...VFR/SKC. Calm winds. High confidence.

Sunday...VFR/SKC. Calm winds in the morning, settling out of the southwest less than 5 kts after 15-16Z. High confidence.

Outlook...

Sunday night through Thursday...VFR. No significant weather expected.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use. How to use Weather