Best year time to visit Allentown

General weather information about Allentown

Average annual temperature is 13.7 °C

Absolute maximum temperature: 35.6 °C

Absolute minimum temperature: -12.8 °C

Number of sunny days: 191 days

Number of rainy days: 171 days

Number of snow days: 3 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)18.619.017.731.330.235.135.233.135.628.420.416.9
Average daytime temperature (°C)9.59.711.620.122.827.731.229.025.520.412.39.8
Average temperature (°C)5.44.55.913.716.321.025.323.720.414.86.85.5
Average night temperature (°C)2.00.01.18.610.215.520.519.216.210.42.21.6
Absolute minimum temperature (°C)-3.9-12.8-3.70.54.010.216.415.310.63.6-4.7-5.0

Allentown monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.015.014.014.013.011.010.09.0
Daylight mean duration (h)9.710.712.013.314.415.014.713.712.511.110.09.4
Daylight minimum duration (h)9.010.011.012.013.014.014.013.011.010.09.09.0
Sunshine mean duration (h)4.76.87.48.711.510.611.510.57.98.27.65.4
Precipitation (mm)9248104130591151541291604348188
Sunny days151514152014101316182219
Rainy days16111615111621181413812
Snow days021000000000

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:

  • May — 11.5(h)
  • June — 10.6(h)
  • July — 11.5(h)

The largest precipitation sum in Allentown is at

  • July — 154(mm)
  • September — 160(mm)
  • December — 188(mm)

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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.