Allentown weather in October: Allentown, Pennsylvania: normal highs, lows, rain and records for October
Allentown in October has a normal high of 66°F and a normal low of 44°F, a daily mean of 55°F, falling from 71°F on the 1st to 60°F by the 31st. Measurable precipitation falls on 10 days in a normal October, 4.14 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 7°C, 105 mm of precipitation and 1 cm of snow in October.
- NOAA stationAllentown Lehigh Valley International Airport
- Station IDUSW00014737
- Location40.65°N 75.45°W
- Elevation390 ft (119 m)
- From the center4 miles
- Population127,138
- Jan 38° 22°
- Feb 42° 23°
- Mar 51° 31°
- Apr 63° 40°
- May 74° 51°
- Jun 82° 60°
- Jul 86° 65°
- Aug 84° 63°
- Sep 77° 55°
- Oct 66° 44°
- Nov 54° 34°
- Dec 43° 27°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Allentown in October?
The normal high is 66°F and the normal low 44°F, for a daily mean of 54.6°F. October is 11.7°F cooler than September and 10.7°F warmer than November. October is the 6th warmest month of the year in Allentown and the 5th wettest. Across the month the normal high falls 11°F, from 71°F on October 1 to 60°F on October 31. From one year to the next October's mean temperature typically moves about 2.7°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 52°F and 57°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 33%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 71°F | 49°F | 33% | 21% |
| October 8 | 69°F | 47°F | 33% | 21% |
| October 15 | 66°F | 44°F | 32% | 20% |
| October 22 | 63°F | 42°F | 31% | 20% |
| October 31 | 60°F | 39°F | 30% | 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 | 71°F | 49°F | 33% | 21% | 11 h 50 min |
| October 2 | 71°F | 49°F | 33% | 21% | 11 h 50 min |
| October 3 | 71°F | 49°F | 33% | 21% | 11 h 40 min |
| October 4 | 70°F | 48°F | 33% | 21% | 11 h 40 min |
| October 5 | 70°F | 48°F | 33% | 21% | 11 h 40 min |
| October 6 | 69°F | 47°F | 33% | 21% | 11 h 40 min |
| October 7 | 69°F | 47°F | 33% | 21% | 11 h 30 min |
| October 8 | 69°F | 47°F | 33% | 21% | 11 h 30 min |
| October 9 | 68°F | 46°F | 33% | 21% | 11 h 30 min |
| October 10 | 68°F | 46°F | 33% | 21% | 11 h 30 min |
| October 11 | 67°F | 46°F | 33% | 21% | 11 h 20 min |
| October 12 | 67°F | 45°F | 33% | 21% | 11 h 20 min |
| October 13 | 67°F | 45°F | 33% | 20% | 11 h 20 min |
| October 14 | 66°F | 44°F | 33% | 20% | 11 h 10 min |
| October 15 | 66°F | 44°F | 32% | 20% | 11 h 10 min |
| October 16 | 65°F | 44°F | 32% | 20% | 11 h 10 min |
| October 17 | 65°F | 43°F | 32% | 20% | 11 h 10 min |
| October 18 | 65°F | 43°F | 32% | 20% | 11 h |
| October 19 | 64°F | 43°F | 32% | 20% | 11 h |
| October 20 | 64°F | 42°F | 32% | 20% | 11 h |
| October 21 | 64°F | 42°F | 31% | 20% | 11 h |
| October 22 | 63°F | 42°F | 31% | 20% | 10 h 50 min |
| October 23 | 63°F | 41°F | 31% | 20% | 10 h 50 min |
| October 24 | 63°F | 41°F | 31% | 19% | 10 h 50 min |
| October 25 | 62°F | 41°F | 31% | 19% | 10 h 50 min |
| October 26 | 62°F | 40°F | 30% | 19% | 10 h 40 min |
| October 27 | 61°F | 40°F | 30% | 19% | 10 h 40 min |
| October 28 | 61°F | 40°F | 30% | 19% | 10 h 40 min |
| October 29 | 61°F | 39°F | 30% | 19% | 10 h 40 min |
| October 30 | 60°F | 39°F | 30% | 19% | 10 h 30 min |
| October 31 | 60°F | 39°F | 30% | 19% | 10 h 30 min |
- Normal high
- 66°FOctober average
- Normal low
- 44°FOctober average
- Precipitation
- 4.14 inmonth total
- Days with precipitation
- 100.01 inch or more
- Snowfall
- 0.2 inmonth total
- Nights at 32°F or colder
- 3
- Daylight
- 11 h 50 min to 10 h 30 minOctober 1 to October 31
- Days at 70°F or more
- 10
- Days at 80°F or more
- 2
- Sunshine
- 69%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014737; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Allentown in October?
On a given October day the chance of 0.01 inch or more is 32% on average, highest around October 1 (33%). In all, 4.14 in falls on 10 days of a normal October, 1 of them with an inch or more.
In a normal October in Allentown, 3 nights fall to freezing and snowfall averages 0.2 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014737.
How humid and windy is Allentown in October?
At 3 p.m. the normal temperature is 57°F with 50% relative humidity and a dew point of 39°F; at 6 a.m. it is 42°F with 81% humidity. The wind averages 6.8 mph, most often from the west in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 42°F | 37°F | 81% | 5.5 mph | 61% |
| 9 a.m. | 48°F | 40°F | 71% | 7.2 mph | 54% |
| noon | 55°F | 39°F | 55% | 9.5 mph | 52% |
| 3 p.m. | 57°F | 39°F | 50% | 9.7 mph | 51% |
| 6 p.m. | 52°F | 38°F | 60% | 6.8 mph | 55% |
| 9 p.m. | 48°F | 38°F | 69% | 5.7 mph | 59% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014737. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for October in Allentown?
The warmest October temperature on Allentown's official record (since 1922) is 93°F, on October 2, 2019; the coldest is 21°F, on October 28, 1936. The wettest October brought 13.16 in (2005); the snowiest, 6.8 inches (2011).
The October mean against the 1991-2020 normal of 54.6°F: 2021 59.4°F (+4.8), 2022 51.5°F (−3.1), 2023 56.0°F (+1.4), 2024 55.6°F (+1.0), 2025 54.4°F (−0.2). 3 of 5 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 59.4°F | +4.8°F | 3.87 in |
| 2022 | 51.5°F | −3.1°F | 5.07 in |
| 2023 | 56.0°F | +1.4°F | 1.64 in |
| 2024 | 55.6°F | +1.0°F | 0.02 in |
| 2025 | 54.4°F | −0.2°F | 2.40 in |
Source: records: ACIS, NWS threaded record ABEthr; recent months: ACIS, station USW00014737. Records and recent months use complete months only.
How does October in Allentown 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; Allentown's is 66°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Allentown in September77°F by day, 55°F at night
- Allentown in November54°F by day, 34°F at night
- Allentown 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