The hottest, coldest, wettest and snowiest days Marion has
recorded — the outer limits of what its weather can do, and how far
they sit beyond a normal day.
Based on 19 years of daily weather observations (2006–present), from the Marion Municipal Airport station 6 km away. Updated through August 2025 — 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 Marion
has recorded — each shown against what a normal day that time of year
looks like.
🔥Hottest day
101°FJun 28, 2012
The three most extreme on record
1101°FJun 28, 2012
297°FJun 29, 2012
397°FJul 4, 2012
❄️Coldest night
-23°FJan 16, 2009
The three most extreme on record
1-23°FJan 16, 2009
2-18°FJan 17, 2009
3-18°FJan 28, 2014
🌧️Most rain in one day
3.89 inSep 8, 2020
The three most extreme on record
13.89 inSep 8, 2020
22.82 inJun 14, 2008
32.78 inFeb 28, 2011
In plain terms
Across the record, Marion has reached as high as 101°F and as low as −23°F. A single day has delivered over 4 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 John Glenn Intl AP (NOAA GHCN station USW00014821), about 70 km from the city centre.