Butternut, WI climate
Butternut has cold winters and pleasant summers. A typical July afternoon reaches 78°, a January night drops to 2°.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Butternut feels like
Winter
Spring
Summer
Fall
Butternut weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 20° | 2° | 1.2" | -1° – 24° |
| February | 26° | 4° | 1.0" | 3° – 30° |
| March | 37° | 15° | 1.7" | 16° – 41° |
| April | 51° | 27° | 2.9" | 29° – 47° |
| May | 65° | 40° | 3.7" | 46° – 59° |
| June | 74° | 50° | 4.6" | 58° – 66° |
| July | 78° | 54° | 4.1" | 59° – 71° |
| August | 75° | 52° | 3.6" | 58° – 68° |
| September | 67° | 45° | 3.8" | 49° – 62° |
| October | 53° | 33° | 3.4" | 36° – 48° |
| November | 37° | 22° | 2.0" | 20° – 41° |
| December | 25° | 10° | 1.4" | 6° – 28° |
| Year | 51° | 30° | 33.3" |
“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 Butternut
Butternut gets 33 inches of rain and melted snow a year. June is the wettest month and February the driest.
About 126 frost-free days a year
In half of years the last 32° night comes by May 22 and the first one by September 24. That leaves about 126 frost-free days for gardens, shorter than 96% of U.S. towns.
Heating and cooling a home in Butternut
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Butternut, 98% of that work is heating and 2% 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.
Butternut and its neighbors
Butternut borders 2 towns with climate data. January nights across them vary by 0.4°. Chippewa has both the coldest January nights (2°) and the hottest July afternoons (78°). Butternut’s January low is 2° and its July high 78°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Butternut 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 Butternut averaged 1.6° warmer than the 1900s. The biggest change is in December (+3.6°). The shift is larger than in 75% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Butternut’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 3° to 30°. June is the most reliable, staying within 8°.
Common questions about Butternut’s climate
What is the coldest month in Butternut?
January, with a typical high of 20° and a low of 2°.
What is the hottest month in Butternut?
July, with a typical high of 78° and a low of 54°. About 2 days a year reach 90°.
When is the first frost in Butternut?
In half of years the first 32° night comes by September 24, and the last spring frost by May 22.
What is the rainiest month in Butternut?
June, with 4.6 inches of rain and melted snow. The year totals 33 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Butternut itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Butternut 3sw, WI (3 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.