Norristown, PA Live Doppler Radar
Live radar for Norristown, Montgomery County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Norristown?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 211 days in the Eastern Montgomery forecast zone and Montgomery County — the most common reported hazard around Norristown, mostly in July and June. Next come flash flooding (114 days) and flooding (65 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 211 | Jun 2026 | Jun 10, 2008 · 1 death · $200,000 damage |
| Flash flooding | 114 | Jun 2026 | Sep 16, 1999 · 3 deaths · $12 million damage |
| Flooding | 65 | Jan 2024 | Oct 1, 2010 · 1 death · $750,000 damage |
| Lightning casualties & damage | 36 | Jun 2023 | Jun 6, 2005 · $750,000 damage |
| Heavy snow & winter storms | 28 | Feb 2026 | Feb 12, 2014 · $25,000 damage |
| Excessive heat | 19 | Jul 2025 | — |
| Extreme cold & wind chill | 11 | Dec 2022 | Feb 5, 2015 · 1 death |
| High winds | 7 | Feb 2025 | Mar 2, 2018 · 1 death |
Source: NOAA NCEI Storm Events Database, 1996–2026 (the latest year is partial). A "day" is a date with at least one report in the Eastern Montgomery forecast zone and Montgomery County; damage is as reported, not adjusted for inflation.
How much snow does Norristown get?
A normal year brings about 25 inches of snow to Norristown, based on NOAA's 1991–2020 climate normals for the Norristown weather station in town. The snowiest month is usually February (10.9 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.1 | 0.1 | 4.2 | 6.8 | 10.9 | 3.0 | 0.2 | 0.0 |
Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.
Which radars cover Norristown?
The closest NEXRAD Doppler radar is KDIX (Philadelphia, NJ), about 51 miles east-southeast. Radar beams climb as they travel, so the height of the lowest scan over town decides how low in a storm the radar can see.
| Radar | Distance | Lowest beam over Norristown | View |
|---|---|---|---|
| KDIX Philadelphia, NJ | 51 mi east-southeast | 3,600 ft | Good — most storms and steady rain or snow show clearly |
| KDOX Dover AFB, DE | 90 mi south | 8,200 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KLWX Sterling, MD | 139 mi southwest | 16,100 ft | Limited — the beam overshoots the lowest part of storms |
Beam height is the center of the 0.5° scan above the radar, with standard refraction. Mountains near a radar can block it further.
Tornado & hail history near Norristown
Since 1950, NOAA has recorded 88 tornadoes within 25 miles of Norristown, 20 of them EF2/F2 or stronger. Most came in July and September. The strongest was an F3 on July 27, 1994, which touched down about 12 miles northwest of town and caused 3 deaths. The most recent was an EF1 on August 10, 2023, which touched down about 24 miles south of town.
Hail: 228 reports of 1-inch or larger hail within 25 miles since 1955, 10 of them 2 inches or more; the largest was 3.00-inch hail on June 23, 1969.
Source: NOAA Storm Prediction Center — tornadoes 1950–2025, hail 1955–2025. Distances are to each tornado's track; ratings before February 2007 use the original Fujita scale.
On TALON you get Norristown's live radar loop, rain/snow/ice colors, flash-flood risk, storm tracks with arrival times and NWS warnings free; close-up radar and rotation detection are part of TALON Pro.
Norristown radar FAQ
Where is the nearest weather radar to Norristown, PA?
KDIX (Philadelphia, NJ), about 51 miles east-southeast. KDOX (Dover AFB, DE) is 90 miles away and also covers the area.
Does radar show snow in Norristown?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Norristown the lowest scan from KDIX is about 3,600 ft up.
Is TALON's radar for Norristown free?
Yes — the US radar loop, rain/snow/ice colors, flash-flood risk, storm tracks and NWS warnings are free in any browser. Close-up radar, rotation detection and longer forecasts are part of TALON Pro.
Should I rely on radar for my safety?
No app replaces official warnings. When the National Weather Service issues a warning for Norristown, follow it right away — see watch vs. warning.
Radar for nearby towns
- Bridgeport, PA radar 1 mi
- Conshohocken, PA radar 4 mi
- West Conshohocken, PA radar 4 mi
- Ambler, PA radar 7 mi
- North Wales, PA radar 7 mi
- Collegeville, PA radar 8 mi
- Lansdale, PA radar 9 mi
- Narberth, PA radar 9 mi
- Trappe, PA radar 9 mi
- Phoenixville, PA radar 10 mi