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Weather extremes

How extreme does University City's weather get?

The hottest, coldest, wettest and snowiest days University 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 St Louis Lambert Intl Ap station 12 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 University City has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
108°F Jun 28, 2012

That is about 22°F hotter than a normal June afternoon in University City (typical high near 86°F).

The three most extreme on record

1 108°F Jun 28, 2012
2 108°F Jul 25, 2012
3 108°F Jul 22, 2017
❄️ Coldest night
-18°F Jan 20, 1985

About 42°F colder than a normal January night in University City (typical low near 24°F).

The three most extreme on record

1 -18°F Jan 20, 1985
2 -16°F Dec 22, 1989
3 -15°F Jan 10, 1982
🌧️ Most rain in one day
8.64 in Jul 26, 2022

More rain in a single day than University City usually gets in the whole month of July (typical July total about 3.9 in).

The three most extreme on record

1 8.64 in Jul 26, 2022recent
2 5.59 in May 16, 1995
3 4.87 in Dec 26, 2015
Most snow in one day
12.4 in Mar 24, 2013

Close to a whole typical March's snow in one day (University City averages about 2 in across the month).

The three most extreme on record

1 12.4 in Mar 24, 2013
2 12.0 in Dec 19, 1973
3 10.9 in Jan 16, 1978

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 108°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

University City's record heat sits well above even a hot day for the season — June's 108°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, University City's warmest days reach the low 90s°F and its coldest nights drop to the mid-20s°F. But across the record it has gone as high as 108°F and as low as −18°F. A single day has delivered over 9 inches of rain or close to 12 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 ST Charles 7 Ssw (NOAA GHCN station USC00237398), about 19 km from the city centre.

How we build these numbers →