How extreme does Union City's weather get?

The hottest, coldest, wettest and snowiest days Union 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 Atlanta Hartsfield-Jackson Int station 10 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 Union City has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

106°F Jun 30, 2012

That is about 19°F hotter than a normal June afternoon in Union City (typical high near 87°F).

The three most extreme on record

1 106°F Jun 30, 2012

2 105°F Jul 13, 1980

3 105°F Jul 17, 1980

❄️ Coldest night

-8°F Jan 21, 1985

About 44°F colder than a normal January night in Union City (typical low near 36°F).

The three most extreme on record

1 -8°F Jan 21, 1985

2 -6°F Jan 20, 1985

3 -5°F Jan 11, 1982

🌧️ Most rain in one day

6.68 in Oct 4, 1995

More rain in a single day than Union City usually gets in the whole month of October (typical October total about 3.3 in).

The three most extreme on record

1 6.68 in Oct 4, 1995

2 5.14 in Jul 6, 2005

3 4.93 in Sep 16, 2004

⛄ Most snow in one day

7.9 in Mar 24, 1983

Close to a whole typical March's snow in one day (Union City averages about 0 in across the month).

The three most extreme on record

1 7.9 in Mar 24, 1983

2 5.0 in Jan 18, 1992

3 4.2 in Jan 7, 1988

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.

normal range of daily temperatureshottest ever recordedcoldest ever recorded

Union City's record heat sits well above even a hot day for the season — June's 106°F is about 19°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, Union City's warmest days reach the low 90s°F and its coldest nights drop to the mid-30s°F. But across the record it has gone as high as 106°F and as low as −8°F. A single day has delivered over 7 inches of rain or close to 8 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 Atlanta Hartsfield-jackson Int (NOAA GHCN station USW00013874), about 10 km from the city centre.

How we build these numbers →

← Union City city detail