Norristown weather in July: Norristown, Pennsylvania: normal highs, lows, rain and records for July
Norristown in July has a normal high of 89°F and a normal low of 67°F, a daily mean of 78°F, holding near 89°F all month. Measurable precipitation falls on 11 days in a normal July, 4.70 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 19°C, 119 mm of precipitation in July.
- 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 July?
The normal high is 89°F and the normal low 67°F, for a daily mean of 77.7°F. July is 4.7°F warmer than June and 1.8°F warmer than August. July is the warmest month of the year in Norristown and the 4th wettest. From one year to the next July's mean temperature typically moves about 2.5°F either way (NOAA's standard deviation), so roughly two Julys in three average between 75°F and 80°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 37%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 88°F | 66°F | 35% | 24% |
| July 8 | 89°F | 67°F | 35% | 24% |
| July 15 | 89°F | 67°F | 35% | 25% |
| July 22 | 89°F | 67°F | 36% | 25% |
| July 31 | 88°F | 66°F | 37% | 25% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 10, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 88°F | 66°F | 35% | 24% | 15 h |
| July 2 | 88°F | 66°F | 35% | 24% | 15 h |
| July 3 | 89°F | 66°F | 35% | 24% | 15 h |
| July 4 | 89°F | 66°F | 34% | 24% | 15 h |
| July 5 | 89°F | 66°F | 34% | 24% | 15 h |
| July 6 | 89°F | 66°F | 34% | 24% | 15 h |
| July 7 | 89°F | 67°F | 34% | 24% | 15 h |
| July 8 | 89°F | 67°F | 35% | 24% | 14 h 50 min |
| July 9 | 89°F | 67°F | 35% | 24% | 14 h 50 min |
| July 10 | 89°F | 67°F | 35% | 24% | 14 h 50 min |
| July 11 | 89°F | 67°F | 35% | 24% | 14 h 50 min |
| July 12 | 89°F | 67°F | 35% | 24% | 14 h 50 min |
| July 13 | 89°F | 67°F | 35% | 24% | 14 h 50 min |
| July 14 | 89°F | 67°F | 35% | 25% | 14 h 50 min |
| July 15 | 89°F | 67°F | 35% | 25% | 14 h 50 min |
| July 16 | 89°F | 67°F | 35% | 25% | 14 h 50 min |
| July 17 | 89°F | 67°F | 35% | 25% | 14 h 40 min |
| July 18 | 89°F | 67°F | 35% | 25% | 14 h 40 min |
| July 19 | 89°F | 67°F | 35% | 25% | 14 h 40 min |
| July 20 | 89°F | 67°F | 36% | 25% | 14 h 40 min |
| July 21 | 89°F | 67°F | 36% | 25% | 14 h 40 min |
| July 22 | 89°F | 67°F | 36% | 25% | 14 h 40 min |
| July 23 | 89°F | 67°F | 36% | 26% | 14 h 30 min |
| July 24 | 89°F | 67°F | 36% | 26% | 14 h 30 min |
| July 25 | 89°F | 67°F | 37% | 26% | 14 h 30 min |
| July 26 | 89°F | 67°F | 37% | 26% | 14 h 30 min |
| July 27 | 88°F | 67°F | 37% | 26% | 14 h 30 min |
| July 28 | 88°F | 67°F | 37% | 26% | 14 h 30 min |
| July 29 | 88°F | 67°F | 37% | 26% | 14 h 20 min |
| July 30 | 88°F | 67°F | 37% | 26% | 14 h 20 min |
| July 31 | 88°F | 66°F | 37% | 25% | 14 h 20 min |
- Normal high
- 89°FJuly average
- Normal low
- 67°FJuly average
- Precipitation
- 4.70 inmonth total
- Days with precipitation
- 110.01 inch or more
- Days at 90°F or more
- 15
- Daylight
- 15 h to 14 h 20 minJuly 1 to July 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 29
- Sunshine
- 79%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 in Norristown in July?
On a given July day the chance of 0.01 inch or more is 35% on average, highest around July 29 (37%). In all, 4.70 in falls on 11 days of a normal July, 2 of them with an inch or more.
In a normal July in Norristown, 15 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00366370.
What are the records for July in Norristown?
The warmest July temperature on this station's record (since 1951) is 108°F, on July 24, 2011; the coldest is 48°F, on July 6, 1979. The wettest July brought 10.82 in (2004).
The July mean against the 1991-2020 normal of 77.7°F: 2021 78.0°F (+0.3), 2022 80.0°F (+2.3), 2023 78.9°F (+1.2), 2024 79.6°F (+1.9), 2025 80.5°F (+2.8), 2026 78.3°F (+0.6). 6 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 78.0°F | +0.3°F | 3.77 in |
| 2022 | 80.0°F | +2.3°F | 1.83 in |
| 2023 | 78.9°F | +1.2°F | 9.58 in |
| 2024 | 79.6°F | +1.9°F | 2.71 in |
| 2025 | 80.5°F | +2.8°F | 4.27 in |
| 2026 | 78.3°F | +0.6°F | 4.21 in |
Source: records: ACIS, station USC00366370; recent months: ACIS, station USC00366370. Records and recent months use complete months only.
How does July in Norristown compare across Pennsylvania?
Across the 108 places PlainClimate covers in Pennsylvania, July normal highs run from 78°F in Laporte to 89°F in Marcus Hook; Norristown's is 89°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.