Connecticut weather in October 2025

Expect 18°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Connecticut in October. Check more long-term weather averages for Connecticut in October before you book your next holiday to Connecticut in 2025/2026.

  • 18°C maximum daytime temperature in October in Connecticut (Hartford)18
    18°C max day temperature
  • 6 hours of sunshine per day
  • 8 days with some rainfall in October in Connecticut (Hartford)8
    8 days with some rainfall
  • 5°C minimum night-time temperature in October in Connecticut (Hartford)5
    5°C min night temperature
  • 11 hours of daylight per day in October in Connecticut (Hartford)11
    11 hours of daylight per day
  • No heat & humidity in October in Connecticut (Hartford)0
    No heat & humidity
  • 90 mm monthly rainfall in October in Connecticut (Hartford)90
    90 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in October in Connecticut (Hartford)4
    4 (Moderate) UV index

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The October weather guide for Connecticut (Hartford) 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.

Top Connecticut destinations

Below are average maximum temperatures at popular countries, regions and places in Connecticut in October. Select a holiday destination to see more weather parameters.

All Connecticut destinations

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

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How hot is it in Connecticut in October?

Daytime temperatures usually reach 18°C in Hartford, Connecticut in October, falling to 5°C at night.

How sunny is it in Connecticut in October?

There are normally 6 hours of bright sunshine each day in Hartford, Connecticut in October - that's 58% of daylight hours.

Does it rain in Connecticut in October?

There are usually 8 days with some rain in Hartford, Connecticut in October and the average monthly rainfall is 90mm.

Connecticut October sunrise & sunset times

Browse the sunrise and sunset times for Connecticut in October 2025. Select a month to view Connecticut sunrise and sunset times for the next 12 months. The Connecticut sunrise and sunset times shown below are for Hartford.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 05:48 17:32
Thursday, 16th October 2025 06:05 17:07
Friday, 31st October 2025 06:22 16:46

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