Allentown weather in January 2026

Expect daytime maximum temperatures of 2°C in Allentown, Pennsylvania in January based on long-term weather averages. There are 5 hours of sunshine per day on average with 11 days with some rainfall and typically 83 mm of rainfall in the month, which might fall as snow.

  • 2°C maximum daytime temperature in January in Allentown2
    2°C max day temperature
  • 5 hours of sunshine per day
  • 11 days with some rainfall in January in Allentown11
    11 days with some rainfall
  • -7°C minimum night-time temperature in January in Allentown-7
    -7°C min night temperature
  • 10 hours of daylight per day in January in Allentown10
    10 hours of daylight per day
  • No heat & humidity in January in Allentown0
    No heat & humidity
  • 83 mm monthly rainfall in January in Allentown83
    83 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in January in Allentown2
    2 (Low) UV index

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The January weather guide for Pennsylvania (Allentown) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about the USA

How cold is it in Allentown in January?

Daytime temperatures usually reach 2°C in Allentown in January, falling to -7°C at night.

How sunny is it in Allentown in January?

There are normally 5 hours of bright sunshine each day in Allentown in January - that's 50% of daylight hours.

Does it rain in Allentown in January?

There are usually 11 days with some rain in Allentown in January and the average monthly rainfall is 83mm. Rain may fall as snow in this month.

Allentown January sunrise & sunset times

Browse the sunrise and sunset times for Allentown in January 2026. Select a month to view Allentown sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 07:26 16:46
Friday, 16th January 2026 07:23 17:01
Saturday, 31st January 2026 07:12 17:19

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