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United StatesThe climate of Allentown
The current climate in Allentown features temperatures ranging from a high of 30°C to a low of 4°C throughout the year. The average yearly temperature is around 18°C. At night, temperatures in the colder months average around -4°C and in the warmer months around 19°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Allentown, Pennsylvania.
Temperature records
The highest temperature recorded in Allentown in recent years was 37°C in July 2018. The lowest daytime temperature recorded was -13°C in January 2014.
Precipitation and snowfall
On average, Allentown gets 1162 mm of precipitation each year. Of this, about 62 cm is snowfall. For comparison, New York gets 1142 mm of precipitation each year.
Best time to visit Allentown?
The best time to visit Allentown for sunny weather is June, July, September and October. During this period, you'll have nice temperatures and not too much rain, making it a great time to visit Allentown. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
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Climate Table of Allentown
The climate table of Allentown shows the average temperatures, rainfall, snow, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 4 | 6 | 10 | 17 | 22 | 27 | 30 | 29 | 25 | 19 | 12 | 7 |
| Temp. min (°C) | -4 | -3 | 1 | 6 | 12 | 17 | 20 | 19 | 15 | 9 | 2 | 0 |
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| Precipitation (mm) | 69 | 114 | 60 | 77 | 143 | 110 | 97 | 162 | 90 | 72 | 89 | 79 |
| Snow (cm) | 14 | 31 | 9,4 | 0,5 | 0 | 0 | 0 | 0 | 0 | 0 | 1,6 | 5,0 |
| UV Index | 1 | 2 | 2 | 4 | 3 | 6 | 3 | 6 | 3 | 3 | 1 | 2 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
Temperature charts
These charts display the average temperatures in Allentown, Pennsylvania. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Allentown
Yearly Temperature in Allentown
Precipitation charts
These charts show the average amount of precipitation in Allentown, Pennsylvania. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Allentown
Total Yearly Precipitation in Allentown
Average Snowfall per Month in Allentown
Total Yearly Snowfall in Allentown
UV index chart
This chart shows the average UV index per month in Allentown, Pennsylvania. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Allentown
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Average weather in Allentown by month
Click on a month below to see detailed weather info for Allentown. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.