Best year time to visit Allentown

General weather information about Allentown

Average annual temperature is 17.3 °C

Absolute maximum temperature: 38.3 °C

Absolute minimum temperature: -4.4 °C

Number of sunny days: 182 days

Number of rainy days: 183 days

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* Weather data for Allentown United States is based on climate observations for 2026 year

Allentown air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)21.326.626.028.731.636.436.138.333.430.926.320.6
Average daytime temperature (°C)13.616.418.021.326.631.532.432.429.924.517.513.8
Average temperature (°C)8.910.512.215.220.624.726.526.523.518.411.68.2
Average night temperature (°C)5.26.57.610.415.419.221.922.018.313.67.04.1
Absolute minimum temperature (°C)-3.1-4.2-4.44.67.415.018.416.914.31.2-1.2-2.8

Allentown monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.013.012.011.010.09.0
Daylight mean duration (h)10.110.912.013.114.014.514.213.412.411.310.49.9
Daylight minimum duration (h)9.010.011.012.013.014.013.012.011.010.010.09.0
Sunshine mean duration (h)5.36.08.28.411.012.011.010.110.78.77.27.0
Precipitation (mm)161109165162697017810820166248
Sunny days141015101113101320242220
Rainy days1718162020172118107811
Snow days000000000000

Allentown - weather forecast by months

Allentown weather in januaryAllentown weather in februaryAllentown weather in marchAllentown weather in aprilAllentown weather in mayAllentown weather in juneAllentown weather in julyAllentown weather in augustAllentown weather in septemberAllentown weather in octoberAllentown weather in novemberAllentown weather in december

Best time to visit Allentown:

The best time to visit Allentown during the most sunny months:

  • June — 12.0(h)

The largest precipitation sum in Allentown is at

  • January — 161(mm)
  • March — 165(mm)
  • April — 162(mm)
  • July — 178(mm)

    • Weather forecast in the closest to Allentown admin centers

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    Frequently asked questions

    When is the best time to visit Allentown?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Allentown.
    What is the weather like in Allentown?
    See average temperature, rainfall and daylight hours for Allentown by month in the table above.
    How many sunny days does Allentown have?
    The monthly weather statistics above show sunshine and rainfall patterns for Allentown throughout the year.