Marathon, FL is the warmest U.S. city at a 78.8°F average annual temperature (NOAA 1991-2020 normal). These 4892 cities rank highest by 30-year normals, filtered to places with at least 5,000 residents. These are long-term climate normals, not current weather, forecasts, heat-risk scores, or claims about which places have the best weather. Data sortable and downloadable as CSV.
SourceNOAA NCEI · Climate Normals + Census PEP
Window1991-2020
MetricAnnual average temperature normal
GeographyCities reported under PEP
Coverage4,892 of 19,483 cities meet the display filter
Last build2026-09-30
Filter this NOAA temperature ranking
4,892 rows
All 4,892 qualifying U.S. cities ranked by NOAA 1991-2020 annual average temperature normal.
The ranking requires a non-null NOAA annual average temperature normal and at least 5,000 residents. Cities within the same NOAA grid cell can share identical values.
Methodology · NOAA normals
Average annual temperature from 30-year climate normals.
The ranking value is NOAA 1991-2020 annual average temperature normal in degrees Fahrenheit. CONUS rows use NOAA's nClimGrid monthly gridded normals; Alaska, Hawaii, and non-CONUS rows use the nearest available station path recorded by the climate pipeline.
Rows are limited to cities with 2025 Census PEP population of at least 5,000 and a non-null annual average temperature normal. Ranks use standard competition ranking, so exact ties share the same rank.
This page does not say a city is warm today, hotter every year, safer, healthier, or better. It ranks a published long-term normal for one metric.
