Norristown weather in March: Norristown, Pennsylvania: normal highs, lows, rain and records for March
Norristown in March has a normal high of 52°F and a normal low of 32°F, a daily mean of 42°F, rising from 47°F on the 1st to 58°F by the 31st. Measurable precipitation falls on 11 days in a normal March, 4.41 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 11°C and low of 0°C, 112 mm of precipitation and 8 cm of snow in March.
- NOAA stationNorristown
- Station IDUSC00366370
- Location40.11°N 75.34°W
- Elevation62 ft (19 m)
- From the centerunder 1 mile
- Population36,075
- Jan 42° 23°
- Feb 44° 25°
- Mar 52° 32°
- Apr 65° 42°
- May 75° 52°
- Jun 84° 62°
- Jul 89° 67°
- Aug 87° 65°
- Sep 80° 58°
- Oct 68° 45°
- Nov 57° 35°
- Dec 46° 28°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Norristown in March?
The normal high is 52°F and the normal low 32°F, for a daily mean of 41.8°F. March is 7.7°F warmer than February and 11.3°F cooler than April. March is the 9th warmest month of the year in Norristown and the 5th wettest. Across the month the normal high rises 11°F, from 47°F on March 1 to 58°F on March 31. From one year to the next March's mean temperature typically moves about 3.7°F either way (NOAA's standard deviation), so roughly two Marchs in three average between 38°F and 46°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 40%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| March 1 | 47°F | 28°F | 33% | 22% |
| March 8 | 49°F | 30°F | 34% | 22% |
| March 15 | 52°F | 31°F | 35% | 23% |
| March 22 | 54°F | 33°F | 37% | 24% |
| March 31 | 58°F | 36°F | 40% | 25% |
Every day of March: normal high, low and chance of precipitation (warmest afternoon March 31, coldest night March 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| March 1 | 47°F | 28°F | 33% | 22% | 11 h 20 min |
| March 2 | 47°F | 28°F | 33% | 22% | 11 h 20 min |
| March 3 | 47°F | 28°F | 33% | 22% | 11 h 20 min |
| March 4 | 48°F | 29°F | 33% | 22% | 11 h 20 min |
| March 5 | 48°F | 29°F | 33% | 22% | 11 h 30 min |
| March 6 | 48°F | 29°F | 33% | 22% | 11 h 30 min |
| March 7 | 49°F | 29°F | 34% | 22% | 11 h 30 min |
| March 8 | 49°F | 30°F | 34% | 22% | 11 h 30 min |
| March 9 | 49°F | 30°F | 34% | 22% | 11 h 40 min |
| March 10 | 50°F | 30°F | 34% | 22% | 11 h 40 min |
| March 11 | 50°F | 30°F | 34% | 22% | 11 h 40 min |
| March 12 | 50°F | 31°F | 35% | 22% | 11 h 40 min |
| March 13 | 51°F | 31°F | 35% | 22% | 11 h 50 min |
| March 14 | 51°F | 31°F | 35% | 23% | 11 h 50 min |
| March 15 | 52°F | 31°F | 35% | 23% | 11 h 50 min |
| March 16 | 52°F | 32°F | 36% | 23% | 11 h 50 min |
| March 17 | 52°F | 32°F | 36% | 23% | 12 h |
| March 18 | 53°F | 32°F | 36% | 23% | 12 h |
| March 19 | 53°F | 32°F | 37% | 23% | 12 h |
| March 20 | 54°F | 33°F | 37% | 24% | 12 h 10 min |
| March 21 | 54°F | 33°F | 37% | 24% | 12 h 10 min |
| March 22 | 54°F | 33°F | 37% | 24% | 12 h 10 min |
| March 23 | 55°F | 33°F | 38% | 24% | 12 h 10 min |
| March 24 | 55°F | 34°F | 38% | 24% | 12 h 20 min |
| March 25 | 56°F | 34°F | 38% | 24% | 12 h 20 min |
| March 26 | 56°F | 34°F | 39% | 24% | 12 h 20 min |
| March 27 | 56°F | 35°F | 39% | 24% | 12 h 20 min |
| March 28 | 57°F | 35°F | 39% | 25% | 12 h 30 min |
| March 29 | 57°F | 35°F | 40% | 25% | 12 h 30 min |
| March 30 | 58°F | 36°F | 40% | 25% | 12 h 30 min |
| March 31 | 58°F | 36°F | 40% | 25% | 12 h 30 min |
- Normal high
- 52°FMarch average
- Normal low
- 32°FMarch average
- Precipitation
- 4.41 inmonth total
- Days with precipitation
- 110.01 inch or more
- Snowfall
- 3.0 inmonth total
- Nights at 32°F or colder
- 17
- Daylight
- 11 h 20 min to 12 h 30 minMarch 1 to March 31
- Days at 70°F or more
- 3
- Sunshine
- 67%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00366370; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Norristown in March?
On a given March day the chance of 0.01 inch or more is 36% on average, highest around March 31 (40%). In all, 4.41 in falls on 11 days of a normal March, 1 of them with an inch or more.
In a normal March in Norristown, 17 nights fall to freezing, 1 days stay below freezing all day and snowfall averages 3.0 inches.
Snow falls on 2 days in a normal March.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00366370.
What are the records for March in Norristown?
The warmest March temperature on this station's record (since 1951) is 86°F, on March 30, 2025; the coldest is 8°F, on March 1, 1980. The wettest March brought 8.21 in (2010); the snowiest, 19.0 inches (1956).
The March mean against the 1991-2020 normal of 41.8°F: 2021 44.6°F (+2.8), 2022 42.3°F (+0.5), 2023 41.7°F (−0.1), 2024 45.3°F (+3.5), 2025 45.4°F (+3.6), 2026 44.1°F (+2.3). 5 of 6 ran warmer than normal.
| March | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 44.6°F | +2.8°F | 4.94 in |
| 2022 | 42.3°F | +0.5°F | 2.91 in |
| 2023 | 41.7°F | −0.1°F | 2.34 in |
| 2024 | 45.3°F | +3.5°F | 7.10 in |
| 2025 | 45.4°F | +3.6°F | 2.84 in |
| 2026 | 44.1°F | +2.3°F | 2.67 in |
Source: records: ACIS, station USC00366370; recent months: ACIS, station USC00366370. Records and recent months use complete months only.
How does March in Norristown compare across Pennsylvania?
Across the 108 places PlainClimate covers in Pennsylvania, March normal highs run from 40°F in Laporte to 53°F in Marcus Hook; Norristown's is 52°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Norristown in February44°F by day, 25°F at night
- Norristown in April65°F by day, 42°F at night
- Norristown through the yearEvery month, frost dates, records and recent years
- Pennsylvania in MarchThe statewide normal and the warmest and coolest places
- Marcus Hook: Pennsylvania's warmest Marchnormal high 53°F