Unionville, NV climate
Unionville has chilly winters and hot summers, with very little rain. A typical July afternoon reaches 92°, a January night drops to 22°, and about 12 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Unionville feels like
Winter
Spring
Summer
Fall
Unionville 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 | 30-yr range |
|---|---|---|---|---|---|---|
| January | 43° | 22° | 1.2" | 2.9" | 7 | 19° – 41° |
| February | 48° | 26° | 0.9" | 1.2" | 7 | 30° – 43° |
| March | 56° | 30° | 0.9" | 1.8" | 6 | 36° – 48° |
| April | 61° | 34° | 1.0" | 0.8" | 7 | 44° – 53° |
| May | 71° | 42° | 1.2" | 0 | 7 | 49° – 65° |
| June | 82° | 50° | 0.7" | 0 | 3 | 60° – 72° |
| July | 92° | 58° | 0.2" | 0 | 2 | 67° – 79° |
| August | 90° | 55° | 0.2" | 0 | 2 | 69° – 77° |
| September | 81° | 46° | 0.3" | 0 | 2 | 59° – 67° |
| October | 66° | 35° | 0.7" | 0 | 4 | 44° – 57° |
| November | 52° | 26° | 0.9" | 0.8" | 4 | 32° – 45° |
| December | 41° | 20° | 1.2" | 4.1" | 7 | 22° – 37° |
| Year | 65° | 37° | 9.3" | 11.6" | 56 |
“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 Unionville
Unionville gets 9 inches of rain and melted snow a year. December is the wettest month and August the driest. Rain or snow falls on about 56 days a year.
About 131 frost-free days a year
In half of years the last 32° night comes by May 17 and the first one by September 27. That leaves about 131 frost-free days for gardens, shorter than 94% of U.S. towns.
Heating and cooling a home in Unionville
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Unionville, 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.
How Unionville compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Unionville averaged 1.1° warmer than the 1900s. The biggest change is in January (+2.7°). The shift is smaller than in 59% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Unionville’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. January swings the most: between 1991 and 2020 its average temperature ranged from 19° to 41°. September is the most reliable, staying within 8°.
Common questions about Unionville’s climate
What is the coldest month in Unionville?
December, with a typical high of 41° and a low of 20°.
What is the hottest month in Unionville?
July, with a typical high of 92° and a low of 58°. About 58 days a year reach 90°.
How much snow does Unionville get?
About 12 inches in a normal winter, most of it in December.
When is the first frost in Unionville?
In half of years the first 32° night comes by September 27, and the last spring frost by May 17.
What is the rainiest month in Unionville?
December, with 1.2 inches of rain and melted snow. The year totals 9 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Unionville itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Imlay, NV (15 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.