Utah weather by county

29 counties · records since 1895, through September 2026.

Utah in September 2026

28 of 29 counties ran at least 1° warmer than usual in September 2026, and 0 ran at least 1° cooler.
Warmest against its own records: San Juan County (4th-warmest September of 132). Even the least warm, Box Elder County, had its 32nd-warmest.
Wettest September against its records: Carbon County, 3.6 inches (10th-wettest).
27 of 29 counties were 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, Carbon County the most at 0.7°.

This week's forecast against the usual, and every month since 1895, for all 29 counties in Utah. 13 had a top-10 warm September in 2026.