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Weather extremes

How extreme does Jeffersontown's weather get?

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

Based on 26 years of daily weather observations (2000–present), from the Louisville Bowman Fld station 10 km away. Updated through June 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 Jeffersontown has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
107°F Sep 2, 2000

That is about 26°F hotter than a normal September afternoon in Jeffersontown (typical high near 81°F).

The three most extreme on record

1 107°F Sep 2, 2000
2 105°F Jul 15, 2006
3 105°F Jun 29, 2012
❄️ Coldest night
-7°F Dec 23, 2022

About 38°F colder than a normal December night in Jeffersontown (typical low near 31°F).

The three most extreme on record

1 -7°F Dec 23, 2022recent
2 -5°F Feb 20, 2015
3 -3°F Jan 6, 2014
🌧️ Most rain in one day
5.66 in Oct 5, 2013

More rain in a single day than Jeffersontown usually gets in the whole month of October (typical October total about 3.7 in).

The three most extreme on record

1 5.66 in Oct 5, 2013
2 5.29 in Sep 22, 2006
3 4.59 in Apr 3, 2015

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° all-time high 107°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Jeffersontown's record heat sits well above even a hot day for the season — September's 107°F is about 26°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, Jeffersontown's warmest days reach the high 80s°F and its coldest nights drop to the high 20s°F. But across the record it has gone as high as 107°F and as low as −7°F. A single day has delivered over 6 inches of rain. 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 Louisville Bowman Fld (NOAA GHCN station USW00013810), about 10 km from the city centre.

How we build these numbers →