Wilmington weather in January 2026

Expect daytime maximum temperatures of 3°C in Wilmington, Delaware in January based on long-term weather averages. There are 5 hours of sunshine per day on average with 10 days with some rainfall and typically 83 mm of rainfall in the month, which might fall as snow.

  • 3°C maximum daytime temperature in January in Wilmington3
    3°C max day temperature
  • 5 hours of sunshine per day
  • 10 days with some rainfall in January in Wilmington10
    10 days with some rainfall
  • -5°C minimum night-time temperature in January in Wilmington-5
    -5°C min night temperature
  • 10 hours of daylight per day in January in Wilmington10
    10 hours of daylight per day
  • No heat & humidity in January in Wilmington0
    No heat & humidity
  • 83 mm monthly rainfall in January in Wilmington83
    83 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in January in Wilmington2
    2 (Low) UV index
  • 2°C sea temperature in January in Wilmington2
    2°C sea temperature

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The January weather guide for Delaware (Wilmington) 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 Wilmington in January?

Daytime temperatures usually reach 3°C in Wilmington in January, falling to -5°C at night.

How sunny is it in Wilmington in January?

There are normally 5 hours of bright sunshine each day in Wilmington in January - that's 52% of daylight hours.

Is the sea cold around Wilmington in January?

The average sea temperature around Wilmington in January is 2°C.

Does it rain in Wilmington in January?

There are usually 10 days with some rain in Wilmington in January and the average monthly rainfall is 83mm. Rain may fall as snow in this month.

Wilmington January sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 07:23 16:49
Friday, 16th January 2026 07:21 17:03
Saturday, 31st January 2026 07:11 17:21

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