Hot-summer humid continental climate
Climate Allentown - Pennsylvania
Annual high61ºF
Annual low41ºF
Precipitation45.35 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 36 | 20 | 3.03 | 10 |
| Feb | 40 | 22 | 2.70 | 11 |
| Mar | 49 | 29 | 3.39 | 5 |
| Apr | 61 | 38 | 3.56 | 1 |
| May | 71 | 48 | 4.14 | 0 |
| Jun | 80 | 58 | 4.31 | 0 |
| Jul | 84 | 63 | 4.95 | 0 |
| Aug | 82 | 61 | 3.69 | 0 |
| Sep | 75 | 53 | 4.62 | 0 |
| Oct | 64 | 41 | 3.88 | 0 |
| Nov | 53 | 33 | 3.50 | 1 |
| Dec | 40 | 24 | 3.58 | 5 |
- JanHigh 36ºFLow 20ºFPrecip 3.03 inch
- FebHigh 40ºFLow 22ºFPrecip 2.70 inch
- MarHigh 49ºFLow 29ºFPrecip 3.39 inch
- AprHigh 61ºFLow 38ºFPrecip 3.56 inch
- MayHigh 71ºFLow 48ºFPrecip 4.14 inch
- JunHigh 80ºFLow 58ºFPrecip 4.31 inch
- JulHigh 84ºFLow 63ºFPrecip 4.95 inch
- AugHigh 82ºFLow 61ºFPrecip 3.69 inch
- SepHigh 75ºFLow 53ºFPrecip 4.62 inch
- OctHigh 64ºFLow 41ºFPrecip 3.88 inch
- NovHigh 53ºFLow 33ºFPrecip 3.50 inch
- DecHigh 40ºFLow 24ºFPrecip 3.58 inch
Climate summary
What is the average weather in Allentown, Pennsylvania?
Allentown experiences a humid continental climate, marked by very strong seasonal contrasts. Summers are warm, while winters are cold and bring significant snowfall. Precipitation is fairly wet overall and spread relatively evenly throughout the year, with winter moisture often arriving as snow.
Allentown weather averages
Annual high61ºF
Annual low41ºF
Precipitation45.35 inch
Snowfall33 inch
Daily normals Allentown - Pennsylvania - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 39.4 | 23.7 | 0.10 | 0.10 | 0.20 | 0.20 |
| Jan 2 | 39.3 | 23.5 | 0.21 | 0.21 | 0.40 | 0.40 |
| Jan 3 | 39.1 | 23.3 | 0.32 | 0.32 | 0.60 | 0.60 |
| Jan 4 | 39.0 | 23.1 | 0.42 | 0.42 | 0.80 | 0.80 |
| Jan 5 | 38.9 | 23.0 | 0.53 | 0.53 | 1.00 | 1.00 |
| Jan 6 | 38.8 | 22.8 | 0.64 | 0.64 | 1.20 | 1.20 |
| Jan 7 | 38.7 | 22.6 | 0.75 | 0.75 | 1.40 | 1.40 |
| Jan 8 | 38.6 | 22.5 | 0.84 | 0.84 | 1.70 | 1.70 |
| Jan 9 | 38.5 | 22.3 | 0.95 | 0.95 | 2.00 | 2.00 |
| Jan 10 | 38.4 | 22.2 | 1.05 | 1.05 | 2.20 | 2.20 |
| Jan 11 | 38.3 | 22.1 | 1.16 | 1.16 | 2.50 | 2.50 |
| Jan 12 | 38.2 | 21.9 | 1.27 | 1.27 | 2.90 | 2.90 |
| Jan 13 | 38.2 | 21.8 | 1.38 | 1.38 | 3.20 | 3.20 |
| Jan 14 | 38.1 | 21.7 | 1.49 | 1.49 | 3.50 | 3.50 |
| Jan 15 | 38.1 | 21.6 | 1.60 | 1.60 | 3.90 | 3.90 |
| Jan 16 | 38.0 | 21.5 | 1.71 | 1.71 | 4.20 | 4.20 |
| Jan 17 | 38.0 | 21.4 | 1.82 | 1.82 | 4.50 | 4.50 |
| Jan 18 | 38.0 | 21.3 | 1.92 | 1.92 | 4.90 | 4.90 |
| Jan 19 | 38.0 | 21.2 | 2.03 | 2.03 | 5.20 | 5.20 |
| Jan 20 | 38.0 | 21.2 | 2.14 | 2.14 | 5.50 | 5.50 |
| Jan 21 | 38.0 | 21.1 | 2.24 | 2.24 | 5.90 | 5.90 |
| Jan 22 | 38.0 | 21.1 | 2.35 | 2.35 | 6.30 | 6.30 |
| Jan 23 | 38.1 | 21.0 | 2.46 | 2.46 | 6.60 | 6.60 |
| Jan 24 | 38.1 | 21.0 | 2.57 | 2.57 | 7.00 | 7.00 |
| Jan 25 | 38.2 | 21.0 | 2.68 | 2.68 | 7.30 | 7.30 |
| Jan 26 | 38.2 | 21.0 | 2.78 | 2.78 | 7.70 | 7.70 |
| Jan 27 | 38.3 | 21.0 | 2.88 | 2.88 | 8.10 | 8.10 |
| Jan 28 | 38.4 | 21.0 | 2.98 | 2.98 | 8.50 | 8.50 |
| Jan 29 | 38.5 | 21.0 | 3.09 | 3.09 | 8.90 | 8.90 |
| Jan 30 | 38.6 | 21.0 | 3.19 | 3.19 | 9.30 | 9.30 |
| Jan 31 | 38.7 | 21.1 | 3.30 | 3.30 | 9.80 | 9.80 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Allentown - October 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Oct 1 | 80.1 | 59.0 | T |
| Oct 2 | 84.0 | 57.9 | T |
| Oct 3 | 72.0 | 50.0 | T |
| Oct 4 | – | – | – |
| Oct 5 | – | – | – |
| Oct 6 | – | – | – |
| Oct 7 | 69.1 | 36.0 | 0.00 |
| Oct 8 | 75.0 | 46.0 | 0.00 |
| Oct 9 | 72.0 | 41.0 | 0.00 |
| Oct 10 | 71.1 | 39.9 | 0.00 |
| Oct 11 | 57.9 | 54.0 | 1.70 |
| Oct 12 | 73.0 | 54.0 | 0.00 |
| Oct 13 | 78.1 | 48.0 | 0.00 |
| Oct 14 | 79.0 | 59.0 | T |
| Oct 15 | 68.0 | 48.0 | 0.00 |
| Oct 16 | 75.0 | 55.9 | 0.25 |
| Oct 17 | – | – | – |
| Oct 18 | 60.1 | 30.9 | 0.00 |
| Oct 19 | – | – | – |
| Oct 20 | – | – | – |
| Oct 21 | 66.0 | 34.0 | 0.00 |
| Oct 22 | 68.0 | 37.0 | 0.00 |
| Oct 23 | 61.0 | 34.0 | 0.00 |
| Oct 24 | 62.1 | 30.0 | 0.00 |
| Oct 25 | 64.0 | 28.0 | 0.00 |
| Oct 26 | 71.1 | 32.0 | 0.00 |
| Oct 27 | 64.9 | 42.1 | 0.00 |
| Oct 28 | 64.0 | 37.0 | 0.00 |
| Oct 29 | 66.9 | 39.9 | 0.00 |
| Oct 30 | 69.1 | 42.1 | 0.00 |
| Oct 31 | 59.0 | 36.0 | 0.00 |
The data for October 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature84.0ºF · Oct 2
- Lowest max temperature57.9ºF · Oct 11
- Highest min temperature59.0ºF · Oct 1
- Lowest min temperature28.0ºF · Oct 25
Geo Allentown - Pennsylvania
Location
- Country
- United States
- State
- Pennsylvania
- County
- Lehigh
- City
- Allentown
- Zip Code
- 18101
- Elevation
- 341 ft
- Longitude
- -75.49
- Latitude
- 40.61
- ICAO
- –
- IATA
- –