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WeatherLivePennsylvaniaNorristown

Norristown, PA Weather (19401)

ZIP codes: 19401 · 19404
Current WeatherNorristown · 3:58 PM EDT
88° | 71°
88°F
Feels like 98°
Partly cloudy
WindNW 6 mph · Gusts 13 mph
Precip63% · 0.07 in
Humidity66% · Dew point 75°
UV index6 Moderate
Air Quality78 Moderate
Pressure29.88 inHg
Visibility6 mi
Sunrise / Sunset6:31 AM · 7:28 PM · 12h 57m

Weather map — Norristown

Full radar →
Now
88°
20%
6 mph
16:00
84°
20%
5 mph
17:00
81°
12%
8 mph
18:00
82°
4%
8 mph
19:00
78°
8%
5 mph
20:00
77°
7%
4 mph
21:00
75°
19%
4 mph
22:00
76°
18%
4 mph
23:00
74°
29%
4 mph
00:00
73°
34%
3 mph
01:00
73°
30%
3 mph
02:00
71°
21%
4 mph
03:00
71°
21%
4 mph
04:00
70°
18%
4 mph
05:00
69°
18%
4 mph
06:00
69°
18%
3 mph
07:00
69°
17%
3 mph
08:00
69°
16%
3 mph
09:00
70°
16%
3 mph
10:00
71°
15%
4 mph
11:00
71°
15%
4 mph
12:00
71°
16%
4 mph
13:00
73°
11%
3 mph
14:00
80°
6%
4 mph

Today · Fri 9/4

High 88°
63% / 0.07 in

Showers. Winds NW at 9 mph.

Tonight · Fri 9/4

Low 69°
19% / –

Mostly cloudy. Winds NW at 4 mph.

Tomorrow · Sat 9/5

81° | 69°
21% / 0.01 in

Mostly cloudy. Winds NE at 12 mph.

7-day trend

Norristown · temperature + precipitation

10-day forecast

Updated 3:58 PM

Details & indices

Wind
6 mph NW
Gusts 13 mph
Humidity
66%
Dew point 75°
Pressure
29.88 inHg
Falling
UV index
6 — Moderate
High today
Air Quality
Moderate
AQI 78 · US EPA
Allergy
Very high
Ragweed
Visibility
6 mi
Clear view
Allergy — Norristown

🌿 Conditions right now

View all →
Birch
None
Grass
Moderate
Oak
None
Alder
None
Hazel
None
Mugwort
Low
Ragweed
High

Sun & moon

Sunrise6:31 AM
Sunset7:28 PM
Length of day12h 57m
Moonrise11:49 PM
Moonset2:58 PM
Next full moonSep 26 Harvest Moon
Latitude40.1215°N
Longitude-75.3399°E

Water temps nearby

View all →
No beaches within 50 miles
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Fair
Line-drying weather
Grilling
Fair
Fire up the grill
Running
Poor
Lace up outside
Patio
Fair
Dinner outdoors
Nearby places in {{REGION}}
Philadelphia
Partly cloudy
87°
Pittsburgh
Light rain
75°
Data sources · Friday, September 4
Where the Norristown forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 40.1215°N, -75.3399°.
NBM + global weather models
Updated: 3:58 PM
Weather in Norristown
The 10-day span for Norristown runs from a high near 88° on Friday down to 51° overnight on Saturday. About 0.14 in of precipitation is expected in total; the most likely wet day is Sunday (70% chance). Wind is the one to watch: gusts to 37 mph around Thursday. No active NWS alerts at the moment — quiet on the hazards front. Right now Norristown is running about 17° warmer than Bridgeport. Longer view: classic Northeast mix — nor'easters, humid spells and a glorious fall.
Norristown, PA · Elev 157 ft · 40.12°N, 75.34°W · Pennsylvania · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 3:58 PM