Connecticut weather by county

8 counties · records since 1895, through September 2026.

Weather › Connecticut

Connecticut in September 2026

0 of 8 counties ran at least 1° warmer than usual in September 2026, and 0 ran at least 1° cooler.
Warmest against its own records: Fairfield County (32nd-warmest September of 132). Even the least warm, New Haven County, had its 50th-warmest.
Wettest September against its records: New Haven County, 7.7 inches (18th-wettest).
No county was in moderate drought or worse on NOAA's Palmer reading for September.
Since 1970 the state's counties have warmed about 0.6° per decade on average, Fairfield County the most at 0.7°.

This week's forecast against the usual, and every month since 1895, for all 8 counties in Connecticut. None had a top-10 warm September in 2026.