Allentown, PA weather in October
Allentown is mild in October, with some rain: highs average 66°F and nights drop to about 44°F. Rain falls on about 10 days. A good month for most outdoor plans.
- Normal high
- 66°F
- Normal low
- 44°F
- Wet days
- 10
- 4.1 in total
- Muggy days
- 0
- dew point 65°F+
How October changes from start to finish
| October 1 | October 31 | |
|---|---|---|
| Normal high | 71°F | 60°F |
| Normal low | 49°F | 39°F |
| Chance of a wet day | 33% | 30% |
| Sunrise / sunset | 6:58 am / 6:44 pm | 7:31 am / 6:00 pm |
| Daylight | 11.8 h | 10.5 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical October day
- 6 am47°Fdew point 43°F
- 9 am54°Fdew point 46°F
- Noon61°Fdew point 45°F
- 3 pm63°Fdew point 45°F
- 6 pm58°Fdew point 44°F
- 9 pm53°Fdew point 45°F
NOAA hourly normals (local standard time) from Allentown Intl Airport (4 mi away); average wind 7 mph; clear or few clouds in 52% of daytime hours, mostly cloudy or overcast in 40%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F13 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow10 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below3 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per October, counted from daily records for each year 1991-2020.
Rain and snow in October
Normal precipitation is 4.1 in; a dry October brings about 2.5 in and a wet one about 5.1 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 1 an inch or more. Normal snowfall is 0.2 in.
How October varies from year to year
- Warmest October, 1991-20202007: average high 72°F
- Coolest October1992: average high 60°F
- Wettest October2005: 13.2 in
- Driest October2001: 0.8 in
- Highest reading93°F (October 2, 2019)
- Lowest reading24°F (October 29, 2001)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
October compared with September and November
| September | October | November | |
|---|---|---|---|
| Normal high | 77°F | 66°F | 54°F |
| Normal low | 55°F | 44°F | 34°F |
| Wet days | 10 | 10 | 9 |
| Comfortable days | 14 | 13 | 4 |
| Daylight | 12.5 h | 11.1 h | 9.9 h |
Highs change by -11°F from September and -12°F into November.
Nearby alternatives in October
- Warmer: Richmond, VA236 mi · high 71°F · 8 wet days
- Cooler: Syracuse, NY172 mi · high 60°F · 15 wet days
How Allentown ranks in October
- Normal high241st warmest of 378 cities; 2nd of 4 in Pennsylvania
- Wet days281st driest of 378
- Comfortable days130th most of 340
What to pack for Allentown in October
- A rain jacket or umbrella – rain on about 10 days
Frost in October
The first fall frost typically comes around Oct 24; in 1 year in 10 it comes before Oct 8. All frost dates for Allentown.
Heating and cooling
October has 334 heating degree days and 13 cooling degree days (base 65°F), 6% of the year's total heating and cooling demand.
Questions
How cold is Allentown in October?
The normal high is 66°F and the normal low is 44°F. From 1991 to 2020 the coldest October reading was 24°F (most recently on October 29, 2001).
Does it rain a lot in Allentown in October?
About 10 days in October have at least 0.01 in of precipitation, and the normal total is 4.1 in. The wettest October in 1991-2020 was in 2005 (13.2 in); the driest was in 2001 (0.8 in).
Does it snow in Allentown in October?
Yes. Normal snowfall in October is 0.2 in.
Is October a good time to visit Allentown?
October ranks 5th of 12 months on our comfort score for Allentown (62 out of 100). It has about 13 comfortable days. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Allentown Intl Airport (USW00014737), 3.6 mi NE of the city center, 390 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Lehigh Valley International Airport (725170-14737), 3.6 mi NE of the city center, 385 ft . Hourly observations, 1991-2020.