National Heat Records

Hottest
Since

How long since it has been this hot?

Is today the warmest for this date since 1950 — or on record? A live board of 350+ U.S. cities.
Coldest  →  coldestsince.com Wettest  →  wettestsince.com Driest  →  driestsince.com
The Year in Review  →  every year since 1869 Gridded Climate  →  every U.S. county The Almanac  →  every day of the year

Top Stories

The biggest U.S. hot records in play — today and over the next 7 days.
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How Long Since It Was This hot

How long since it was this hot — CONUS map
Every city, by how far back today's forecast value stands for this calendar date.

Forecast Highs

NWS NDFD Forecast High Temperatures:  Zoom into a region for city-by-city numbers, or click on the table.
Forecast Highs — CONUS temperature map

On This Date

Ranked by how far back today's forecast stands for this calendar date. Each row opens a full station page — or browse every station by state →
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Record Highs by Date

record map for the date
The hottest it has ever been on this date at every U.S. city — pick any day of the year.

How It Works

01 · THIS DATE

Every prior year, this date

For each city we hold the daily record back to the 1870s (ThreadEx / GHCN) — and pull out every prior occurrence of this exact calendar date.

02 · COMPARE

Today vs every year

The official NWS forecast high for the date is checked against every past year: when was it last this hot on this date?

03 · SURFACE

“Hottest since ____”

The longer the calendar-day record stands, the higher the city climbs — tap any city for its forecast, timeline and data. Flip to Overall Since for the all-time running record.