Union, PA climate
Union has chilly winters and pleasant summers. A typical July afternoon reaches 84°, a January night drops to 22°, and about 21 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 | 38° | 22° | 3.0" | 5.7" | 15 | 9 | 22° – 40° |
| February | 42° | 24° | 2.6" | 7.2" | 12 | 7 | 20° – 41° |
| March | 50° | 30° | 3.3" | 4.6" | 13 | 3 | 34° – 52° |
| April | 64° | 40° | 3.4" | 0.1" | 14 | 0 | 46° – 56° |
| May | 73° | 49° | 4.1" | 0 | 14 | 0 | 54° – 68° |
| June | 80° | 58° | 4.4" | 0 | 13 | 0 | 65° – 72° |
| July | 84° | 62° | 4.2" | 0 | 11 | 0 | 69° – 77° |
| August | 83° | 61° | 3.8" | 0 | 10 | 0 | 68° – 77° |
| September | 77° | 54° | 3.5" | 0 | 10 | 0 | 62° – 70° |
| October | 65° | 43° | 3.0" | 0 | 12 | 0 | 50° – 60° |
| November | 53° | 34° | 2.9" | 0.5" | 12 | 1 | 37° – 49° |
| December | 42° | 27° | 3.1" | 3.3" | 13 | 5 | 24° – 45° |
| Year | 62° | 42° | 41.2" | 21.4" | 147 | 24 |
“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. June is the wettest month and February the driest. Rain or snow falls on about 147 days a year. Snow covers the ground about 24 days of the year.
About 177 frost-free days a year
In half of years the last 32° night comes by April 27 and the first one by October 22. That leaves about 177 frost-free days for gardens, shorter than 51% 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, 87% of that work is heating and 13% 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 0.6°. Nottingham has the coldest January nights (21°) and Carroll the hottest July afternoons (84°). Union’s January low is 22° and its July high 84°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.