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Weather extremes

How extreme does Muscatine's weather get?

The hottest, coldest, wettest and snowiest days Muscatine 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 Illinois City Dam 16 station 3 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 Muscatine has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
107°F May 27, 2026

That is about 35°F hotter than a normal May afternoon in Muscatine (typical high near 72°F).

The three most extreme on record

1 107°F May 27, 2026recent
2 101°F Jul 24, 2012
3 101°F Aug 4, 2012
❄️ Coldest night
-26°F Jan 16, 2009

About 39°F colder than a normal January night in Muscatine (typical low near 13°F).

The three most extreme on record

1 -26°F Jan 16, 2009
2 -26°F Jan 31, 2019
3 -26°F Feb 1, 2019
🌧️ Most rain in one day
4.80 in Jun 17, 1990

About 96% of a typical June's rain in a single day (Muscatine averages roughly 5.0 in across the month).

The three most extreme on record

1 4.80 in Jun 17, 1990
2 4.56 in Jul 11, 1971
3 4.20 in Jul 1, 2014
Most snow in one day
20.0 in Feb 2, 2011

The three most extreme on record

1 20.0 in Feb 2, 2011
2 14.0 in Jan 3, 1999
3 12.0 in Jan 13, 1979

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 107°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Muscatine's record heat sits well above even a hot day for the season — May's 107°F is about 35°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, Muscatine's warmest days reach the mid-80s°F and its coldest nights drop to the low 10s°F. But across the record it has gone as high as 107°F and as low as −26°F. A single day has delivered over 5 inches of rain or close to 20 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 Illinois City Dam 16 (NOAA GHCN station USC00114355), about 3 km from the city centre.

How we build these numbers →