Mystic weather in October 2025

Expect 63°F daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Mystic in October. Check more long-term weather averages for Mystic in October before you book your next holiday to Connecticut in 2025/2026.

  • 63°F maximum daytime temperature in October in Mystic63
    63°F max day temperature
  • 7 hours of sunshine per day
  • 8 days with some rainfall in October in Mystic8
    8 days with some rainfall
  • 45°F minimum night-time temperature in October in Mystic45
    45°F min night temperature
  • 11 hours of daylight per day in October in Mystic11
    11 hours of daylight per day
  • No heat & humidity in October in Mystic0
    No heat & humidity
  • 3.9 inches monthly rainfall in October in Mystic3.9
    3.9 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in October in Mystic4
    4 (Moderate) UV index
  • 61°F sea temperature in October in Mystic61
    61°F sea temperature

More about Mystic

Mystic by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Connecticut

Secret Flight Club promo code: 40% off memberships

  • Save 40% on annual memberships with exclusive offer
  • Sign up to Secret Flight Club for FREE 7-day trial
  • Members usually save up to 81% with flight deals
Show discount codeShow discount code ******L40
Redeem Secret Flight Club discount code >>

Expires at 23:59 on Tuesday 31st Dec 2024 · View all Secret Flight Club offers

The October weather guide for Connecticut (Mystic) 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)  |  Imperial (°F)

Back to top

More about the USA

How warm is it in Mystic in October?

Daytime temperatures usually reach 63°F in Mystic in October, falling to 45°F at night.

How sunny is it in Mystic in October?

There are normally 7 hours of bright sunshine each day in Mystic in October - that's 61% of daylight hours.

How warm is the sea around Mystic in October?

The average sea temperature around Mystic in October is 61°F.

Does it rain in Mystic in October?

There are usually 8 days with some rain in Mystic in October and the average monthly rainfall is 3.9 inches.

Mystic October sunrise & sunset times

Browse the sunrise and sunset times for Mystic in October 2025. Select a month to view Mystic sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 05:45 17:29
Thursday, 16th October 2025 06:01 17:05
Friday, 31st October 2025 06:18 16:44

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^