Halloween Extremes and Warming October Nights

CM: Halloween Extremes and October Nights 2024 (EN) — Click the downloadable graphic: Halloween Extremes and October Nights

CM: Halloween: Shel Winkley, Meteorologist 2024 (EN) — Click the downloadable graphic: Halloween: Shel Winkley, Meteorologist

KEY CONCEPTS

Fall temperatures have warmed by 2.5°F on average across the U.S. since 1970.
Fall warming can disrupt leaf-peeping and extend allergy and wildfire smoke seasons.
Warming has also taken the chill out of a favorite fall tradition: trick-or-treating.
October nights have warmed in 216 U.S. cities (89% of 242 analyzed) — by 3.3°F on average since 1970.
Graphics also show each city’s record warmest, coldest, and rainiest Halloween.

Download local data

METHODOLOGY

October minimum temperatures from 1970 to 2023 were obtained from the Applied Climate Information System (ACIS). Local Halloween climate extremes were also retrieved from ACIS, but included each station’s entire period of record.

Climate Central's local analyses include 247 stations, however only 242 stations are included in reported data summaries based on linear trends due to data gaps in Bend, Ore.; Dothan, Ala.; Hazard, Ky.; and Clarksburg and Wheeling, W.Va.