Harrisburg weather in October: Harrisburg, Pennsylvania: normal highs, lows, rain and records for October
Harrisburg in October has a normal high of 67°F and a normal low of 47°F, a daily mean of 57°F, falling from 73°F on the 1st to 61°F by the 31st. Measurable precipitation falls on 11 days in a normal October, 3.68 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 8°C, 93 mm of precipitation in October.
- NOAA stationHarrisburg Capitol Cy Airport
- Station IDUSW00014751
- Location40.22°N 76.85°W
- Elevation340 ft (104 m)
- From the center4 miles
- Population50,649
- Jan 40° 25°
- Feb 43° 26°
- Mar 53° 34°
- Apr 65° 43°
- May 75° 53°
- Jun 83° 63°
- Jul 88° 67°
- Aug 85° 66°
- Sep 79° 58°
- Oct 67° 47°
- Nov 55° 37°
- Dec 44° 30°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Harrisburg in October?
The normal high is 67°F and the normal low 47°F, for a daily mean of 56.7°F. October is 11.8°F cooler than September and 10.7°F warmer than November. October is the 6th warmest month of the year in Harrisburg and the 5th wettest. Across the month the normal high falls 12°F, from 73°F on October 1 to 61°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 | 73°F | 53°F | 35% | 19% |
| October 8 | 70°F | 50°F | 35% | 20% |
| October 15 | 67°F | 47°F | 34% | 20% |
| October 22 | 64°F | 44°F | 33% | 20% |
| October 31 | 61°F | 41°F | 31% | 19% |
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 | 73°F | 53°F | 35% | 19% | 11 h 50 min |
| October 2 | 72°F | 52°F | 35% | 19% | 11 h 50 min |
| October 3 | 72°F | 52°F | 35% | 19% | 11 h 40 min |
| October 4 | 71°F | 51°F | 35% | 19% | 11 h 40 min |
| October 5 | 71°F | 51°F | 35% | 19% | 11 h 40 min |
| October 6 | 71°F | 51°F | 35% | 19% | 11 h 40 min |
| October 7 | 70°F | 50°F | 35% | 20% | 11 h 30 min |
| October 8 | 70°F | 50°F | 35% | 20% | 11 h 30 min |
| October 9 | 69°F | 49°F | 35% | 20% | 11 h 30 min |
| October 10 | 69°F | 49°F | 35% | 20% | 11 h 30 min |
| October 11 | 69°F | 49°F | 35% | 20% | 11 h 20 min |
| October 12 | 68°F | 48°F | 35% | 20% | 11 h 20 min |
| October 13 | 68°F | 48°F | 35% | 20% | 11 h 20 min |
| October 14 | 67°F | 47°F | 34% | 20% | 11 h 20 min |
| October 15 | 67°F | 47°F | 34% | 20% | 11 h 10 min |
| October 16 | 67°F | 47°F | 34% | 20% | 11 h 10 min |
| October 17 | 66°F | 46°F | 34% | 20% | 11 h 10 min |
| October 18 | 66°F | 46°F | 34% | 20% | 11 h 10 min |
| October 19 | 66°F | 45°F | 34% | 20% | 11 h |
| October 20 | 65°F | 45°F | 33% | 20% | 11 h |
| October 21 | 65°F | 45°F | 33% | 20% | 11 h |
| October 22 | 64°F | 44°F | 33% | 20% | 10 h 50 min |
| October 23 | 64°F | 44°F | 33% | 19% | 10 h 50 min |
| October 24 | 64°F | 44°F | 32% | 19% | 10 h 50 min |
| October 25 | 63°F | 43°F | 32% | 19% | 10 h 50 min |
| October 26 | 63°F | 43°F | 32% | 19% | 10 h 40 min |
| October 27 | 63°F | 43°F | 32% | 19% | 10 h 40 min |
| October 28 | 62°F | 42°F | 31% | 19% | 10 h 40 min |
| October 29 | 62°F | 42°F | 31% | 19% | 10 h 40 min |
| October 30 | 62°F | 42°F | 31% | 19% | 10 h 40 min |
| October 31 | 61°F | 41°F | 31% | 19% | 10 h 30 min |
- Normal high
- 67°FOctober average
- Normal low
- 47°FOctober average
- Precipitation
- 3.68 inmonth total
- Days with precipitation
- 110.01 inch or more
- 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
- 11
- Days at 80°F or more
- 3
- Sunshine
- 68%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014751; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Harrisburg in October?
On a given October day the chance of 0.01 inch or more is 34% on average, highest around October 3 (35%). In all, 3.68 in falls on 11 days of a normal October, 1 of them with an inch or more.
In a normal October in Harrisburg, 1 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014751.
What are the records for October in Harrisburg?
The warmest October temperature on this station's record (since 1939) is 97°F, on October 7, 1941; the coldest is 23°F, on October 24, 1969. The wettest October brought 11.65 in (2013); the snowiest, 1.2 inches (1940).
The October mean against the 1991-2020 normal of 56.7°F: 2021 63.5°F (+6.8), 2022 55.7°F (−1.0), 2023 59.5°F (+2.8), 2024 58.6°F (+1.9), 2025 55.8°F (−0.9). 3 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 63.5°F | +6.8°F | 2.57 in |
| 2022 | 55.7°F | −1.0°F | 2.98 in |
| 2023 | 59.5°F | +2.8°F | 1.69 in |
| 2024 | 58.6°F | +1.9°F | 0.48 in |
| 2025 | 55.8°F | −0.9°F | 4.49 in |
Source: records: ACIS, station USW00014751; recent months: ACIS, station USW00014751. Records and recent months use complete months only.
How does October in Harrisburg 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; Harrisburg's is 67°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Harrisburg in September79°F by day, 58°F at night
- Harrisburg in November55°F by day, 37°F at night
- Harrisburg 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