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 Delaware Co-Johnson Fd Apt station 42 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
106°FJun 28, 2012
The three most extreme on record
1106°FJun 28, 2012
2101°FJul 6, 2012
3100°FJul 7, 2012
❄️Coldest night
-14°FJan 16, 2009
The three most extreme on record
1-14°FJan 16, 2009
2-14°FJan 7, 2014
3-13°FJan 6, 2014
🌧️Most rain in one day
4.87 inAug 22, 2014
The three most extreme on record
14.87 inAug 22, 2014
23.76 inSep 8, 2018
33.45 inJul 11, 2019
In plain terms
Across the record, Marion has reached as high as 106°F and as low as −14°F. A single day has delivered over 5 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 FT Wayne Intl AP (NOAA GHCN station USW00014827), about 60 km from the city centre.