Norristown weather in October: Norristown, Pennsylvania: normal highs, lows, rain and records for October
Norristown in October has a normal high of 68°F and a normal low of 45°F, a daily mean of 57°F, falling from 74°F on the 1st to 63°F by the 31st. Measurable precipitation falls on 11 days in a normal October, 4.32 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 20°C and low of 7°C, 110 mm of precipitation and 0 cm of snow in October.
- 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 October?
The normal high is 68°F and the normal low 45°F, for a daily mean of 56.5°F. October is 12.3°F cooler than September and 10.6°F warmer than November. October is the 6th warmest month of the year in Norristown and the 6th wettest. Across the month the normal high falls 11°F, from 74°F on October 1 to 63°F on October 31. From one year to the next October's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 54°F and 59°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 35%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 74°F | 51°F | 33% | 20% |
| October 8 | 71°F | 48°F | 34% | 21% |
| October 15 | 69°F | 45°F | 35% | 22% |
| October 22 | 66°F | 42°F | 34% | 22% |
| October 31 | 63°F | 39°F | 33% | 22% |
Every day of October: normal high, low and chance of precipitation (warmest afternoon October 1, coldest night October 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| October 1 | 74°F | 51°F | 33% | 20% | 11 h 50 min |
| October 2 | 74°F | 50°F | 33% | 20% | 11 h 50 min |
| October 3 | 73°F | 50°F | 33% | 20% | 11 h 40 min |
| October 4 | 73°F | 50°F | 34% | 21% | 11 h 40 min |
| October 5 | 73°F | 49°F | 34% | 21% | 11 h 40 min |
| October 6 | 72°F | 49°F | 34% | 21% | 11 h 40 min |
| October 7 | 72°F | 48°F | 34% | 21% | 11 h 30 min |
| October 8 | 71°F | 48°F | 34% | 21% | 11 h 30 min |
| October 9 | 71°F | 47°F | 34% | 21% | 11 h 30 min |
| October 10 | 71°F | 47°F | 35% | 21% | 11 h 30 min |
| October 11 | 70°F | 46°F | 35% | 21% | 11 h 20 min |
| October 12 | 70°F | 46°F | 35% | 21% | 11 h 20 min |
| October 13 | 69°F | 46°F | 35% | 21% | 11 h 20 min |
| October 14 | 69°F | 45°F | 35% | 22% | 11 h 20 min |
| October 15 | 69°F | 45°F | 35% | 22% | 11 h 10 min |
| October 16 | 68°F | 44°F | 35% | 22% | 11 h 10 min |
| October 17 | 68°F | 44°F | 35% | 22% | 11 h 10 min |
| October 18 | 68°F | 44°F | 35% | 22% | 11 h 10 min |
| October 19 | 67°F | 43°F | 35% | 22% | 11 h |
| October 20 | 67°F | 43°F | 35% | 22% | 11 h |
| October 21 | 67°F | 43°F | 34% | 22% | 11 h |
| October 22 | 66°F | 42°F | 34% | 22% | 11 h |
| October 23 | 66°F | 42°F | 34% | 22% | 10 h 50 min |
| October 24 | 65°F | 41°F | 34% | 22% | 10 h 50 min |
| October 25 | 65°F | 41°F | 34% | 22% | 10 h 50 min |
| October 26 | 65°F | 41°F | 34% | 22% | 10 h 50 min |
| October 27 | 64°F | 40°F | 34% | 22% | 10 h 40 min |
| October 28 | 64°F | 40°F | 34% | 22% | 10 h 40 min |
| October 29 | 64°F | 40°F | 34% | 22% | 10 h 40 min |
| October 30 | 63°F | 39°F | 33% | 22% | 10 h 40 min |
| October 31 | 63°F | 39°F | 33% | 22% | 10 h 30 min |
- Normal high
- 68°FOctober average
- Normal low
- 45°FOctober average
- Precipitation
- 4.32 inmonth total
- Days with precipitation
- 110.01 inch or more
- Snowfall
- 0.1 inmonth total
- Nights at 32°F or colder
- 1
- Daylight
- 11 h 50 min to 10 h 30 minOctober 1 to October 31
- Days at 70°F or more
- 15
- Days at 80°F or more
- 4
- Sunshine
- 69%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 October?
On a given October day the chance of 0.01 inch or more is 34% on average, highest around October 12 (35%). In all, 4.32 in falls on 11 days of a normal October, 1 of them with an inch or more.
In a normal October in Norristown, 1 nights fall to freezing and snowfall averages 0.1 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00366370.
What are the records for October in Norristown?
The warmest October temperature on this station's record (since 1951) is 92°F, on October 3, 2019; the coldest is 26°F, on October 26, 1952. The wettest October brought 10.33 in (2007); the snowiest, 1.0 inches (2011).
The October mean against the 1991-2020 normal of 56.5°F: 2022 53.3°F (−3.2), 2023 58.6°F (+2.1), 2024 57.3°F (+0.8), 2025 56.4°F (−0.1). 2 of 4 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 53.3°F | −3.2°F | 5.44 in |
| 2023 | 58.6°F | +2.1°F | 1.49 in |
| 2024 | 57.3°F | +0.8°F | 0.00 in |
| 2025 | 56.4°F | −0.1°F | 3.74 in |
Source: records: ACIS, station USC00366370; recent months: ACIS, station USC00366370. Records and recent months use complete months only.
How does October in Norristown compare across Pennsylvania?
Across the 108 places PlainClimate covers in Pennsylvania, October normal highs run from 56°F in Laporte to 68°F in Marcus Hook; Norristown's is 68°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Norristown in September80°F by day, 58°F at night
- Norristown in November57°F by day, 35°F at night
- Norristown through the yearEvery month, frost dates, records and recent years
- Pennsylvania in OctoberThe statewide normal and the warmest and coolest places
- Marcus Hook: Pennsylvania's warmest Octobernormal high 68°F