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Weather extremes

How extreme does Jacksonville's weather get?

The hottest, coldest, wettest and snowiest days Jacksonville has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 50+ years of daily weather observations (1971–present), from the New Rvr Mcaf station 5 km away. Updated through May 2026 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Jacksonville has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
126°F Apr 8, 2022

That is about 52°F hotter than a normal April afternoon in Jacksonville (typical high near 74°F).

The three most extreme on record

1 126°F Apr 8, 2022recent
2 102°F Jul 12, 1993
3 102°F Jul 30, 2011
❄️ Coldest night
-5°F Dec 25, 1989

About 43°F colder than a normal December night in Jacksonville (typical low near 38°F).

The three most extreme on record

1 -5°F Dec 25, 1989
2 0°F Jan 21, 1985
3 0°F Apr 26, 2009
🌧️ Most rain in one day
8.44 in Sep 15, 2018

More rain in a single day than Jacksonville usually gets in the whole month of September (typical September total about 7.5 in).

The three most extreme on record

1 8.44 in Sep 15, 2018
2 8.03 in Aug 26, 1998
3 6.71 in Aug 19, 1981
Most snow in one day
19.1 in Mar 2, 1980

The three most extreme on record

1 19.1 in Mar 2, 1980
2 13.4 in Feb 10, 1973
3 8.4 in Dec 23, 1989

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

-30°-10°10°30°50°70°90°110°130°150° all-time high 126°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Jacksonville's record heat sits well above even a hot day for the season — April's 126°F is about 52°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Jacksonville's warmest days reach the high 80s°F and its coldest nights drop to the mid-30s°F. But across the record it has gone as high as 126°F and as low as −5°F. A single day has delivered over 8 inches of rain or close to 19 inches of snow. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.
Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at New Rvr Mcaf (NOAA GHCN station USW00093727), about 5 km from the city centre.

How we build these numbers →