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Weather extremes

How extreme does Jefferson City's weather get?

The hottest, coldest, wettest and snowiest days Jefferson City 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 Jefferson City Wtp station 1 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 Jefferson City has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
110°F Jul 31, 1980

That is about 22°F hotter than a normal July afternoon in Jefferson City (typical high near 88°F).

The three most extreme on record

1 110°F Jul 31, 1980
2 110°F Aug 1, 1980
3 108°F Jul 2, 1980
❄️ Coldest night
-21°F Dec 23, 1989

About 47°F colder than a normal December night in Jefferson City (typical low near 26°F).

The three most extreme on record

1 -21°F Dec 23, 1989
2 -21°F Dec 24, 1989
3 -20°F Dec 22, 1989
🌧️ Most rain in one day
7.41 in Jul 7, 1993

More rain in a single day than Jefferson City usually gets in the whole month of July (typical July total about 4.4 in).

The three most extreme on record

1 7.41 in Jul 7, 1993
2 5.55 in Aug 12, 1993
3 4.98 in Sep 1, 2003
Most snow in one day
14.0 in Jan 19, 1995

Close to a whole typical January's snow in one day (Jefferson City averages about 3 in across the month).

The three most extreme on record

1 14.0 in Jan 19, 1995
2 14.0 in Feb 2, 2011
3 12.1 in Dec 1, 2006

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.

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

Jefferson City's record heat sits well above even a hot day for the season — July's 110°F is about 22°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, Jefferson City's warmest days reach the high 80s°F and its coldest nights drop to the low 20s°F. But across the record it has gone as high as 110°F and as low as −21°F. A single day has delivered over 7 inches of rain or close to 14 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 Jefferson City Wtp (NOAA GHCN station USC00234271), about 1 km from the city centre.

How we build these numbers →