Union, OH climate
Union has chilly winters and pleasant summers. A typical July afternoon reaches 83°, a January night drops to 20°, and about 20 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Union feels like
Winter
Spring
Summer
Fall
Union weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 35° | 20° | 2.9" | 6.7" | 11 | 11 | 18° – 39° |
| February | 39° | 23° | 2.3" | 5.9" | 8 | 9 | 17° – 40° |
| March | 50° | 31° | 3.4" | 3.8" | 10 | 4 | 33° – 52° |
| April | 63° | 40° | 4.1" | 0.2" | 10 | 0 | 45° – 57° |
| May | 73° | 50° | 4.6" | 0 | 12 | 0 | 55° – 69° |
| June | 81° | 59° | 4.5" | 0 | 10 | 0 | 65° – 73° |
| July | 83° | 63° | 4.6" | 0 | 9 | 0 | 68° – 77° |
| August | 82° | 61° | 3.2" | 0 | 7 | 0 | 67° – 76° |
| September | 77° | 53° | 3.1" | 0 | 7 | 0 | 62° – 71° |
| October | 65° | 43° | 2.8" | 0.2" | 7 | 0 | 50° – 60° |
| November | 51° | 33° | 2.8" | 0.3" | 9 | 0 | 36° – 48° |
| December | 40° | 25° | 3.1" | 3.3" | 9 | 6 | 21° – 43° |
| Year | 62° | 42° | 41.3" | 20.4" | 108 | 29 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Union
Union gets 41 inches of rain and melted snow a year. May is the wettest month and February the driest. Rain or snow falls on about 108 days a year. Snow covers the ground about 29 days of the year.
About 175 frost-free days a year
In half of years the last 32° night comes by April 24 and the first one by October 18. That leaves about 175 frost-free days for gardens, shorter than 54% of U.S. towns.
Heating and cooling a home in Union
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Union, 89% of that work is heating and 11% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Union and its neighbors
Union borders 7 towns with climate data. January nights across them vary by 0.7°. Somerford has the coldest January nights (20°) and Oak Run the hottest July afternoons (84°). Union’s January low is 20° and its July high 83°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.