Shelly, MN climate
Shelly has cold winters and pleasant summers, with very little rain. A typical July afternoon reaches 81°, a January night drops to -1°.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Shelly feels like
Winter
Spring
Summer
Fall
Shelly 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 | 17° | -1° | 0.6" | -5° – 23° |
| February | 22° | 3° | 0.6" | 0° – 27° |
| March | 36° | 18° | 1.0" | 17° – 40° |
| April | 53° | 32° | 1.3" | 32° – 51° |
| May | 68° | 44° | 2.8" | 49° – 62° |
| June | 77° | 55° | 4.0" | 61° – 71° |
| July | 81° | 59° | 3.5" | 63° – 76° |
| August | 80° | 56° | 2.9" | 62° – 72° |
| September | 71° | 47° | 2.7" | 54° – 65° |
| October | 55° | 35° | 2.1" | 37° – 51° |
| November | 37° | 20° | 0.8" | 17° – 41° |
| December | 23° | 7° | 0.7" | 1° – 24° |
| Year | 52° | 31° | 23.0" |
“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 Shelly
Shelly gets 23 inches of rain and melted snow a year. June is the wettest month and February the driest.
About 158 frost-free days a year
In half of years the last 32° night comes by May 2 and the first one by October 9. That leaves about 158 frost-free days for gardens, shorter than 73% of U.S. towns.
Heating and cooling a home in Shelly
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Shelly, 94% of that work is heating and 6% 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 Shelly 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 Shelly averaged 1.4° warmer than the 1900s. The biggest change is in January (+4.1°). The shift is larger than in 65% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Shelly’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 -5° to 23°. June is the most reliable, staying within 10°.
Common questions about Shelly’s climate
What is the coldest month in Shelly?
January, with a typical high of 17° and a low of -1°.
What is the hottest month in Shelly?
July, with a typical high of 81° and a low of 59°. About 10 days a year reach 90°.
When is the first frost in Shelly?
In half of years the first 32° night comes by October 9, and the last spring frost by May 2.
What is the rainiest month in Shelly?
June, with 4.0 inches of rain and melted snow. The year totals 23 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Shelly itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Hillsboro 3 N, ND (12 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.