Cottage Grove, KS climate
Cottage Grove has chilly winters and warm summers. A typical July afternoon reaches 90°, a January night drops to 23°, and about 9 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Cottage Grove feels like
Winter
Spring
Summer
Fall
Cottage Grove 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 | 42° | 23° | 1.3" | 3.5" | 6 | 5 | 26° – 42° |
| February | 48° | 27° | 1.6" | 1.4" | 6 | 3 | 29° – 46° |
| March | 58° | 36° | 2.7" | 1.0" | 9 | 1 | 40° – 58° |
| April | 67° | 45° | 4.5" | 0 | 9 | 0 | 49° – 62° |
| May | 76° | 55° | 6.1" | 0 | 10 | 0 | 61° – 73° |
| June | 85° | 65° | 5.5" | 0 | 10 | 0 | 70° – 79° |
| July | 90° | 69° | 4.5" | 0 | 7 | 0 | 74° – 86° |
| August | 89° | 67° | 4.1" | 0 | 7 | 0 | 71° – 85° |
| September | 81° | 58° | 4.4" | 0 | 7 | 0 | 65° – 76° |
| October | 70° | 46° | 3.6" | 0 | 8 | 0 | 51° – 63° |
| November | 56° | 35° | 2.5" | 0.4" | 6 | 0 | 39° – 54° |
| December | 45° | 26° | 1.9" | 3.0" | 6 | 4 | 23° – 41° |
| Year | 67° | 46° | 42.6" | 9.3" | 90 | 12 |
“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 Cottage Grove
Cottage Grove gets 43 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 90 days a year. Snow covers the ground about 12 days of the year.
About 195 frost-free days a year
In half of years the last 32° night comes by April 11 and the first one by October 27. That leaves about 195 frost-free days for gardens, longer than 69% of U.S. towns.
Heating and cooling a home in Cottage Grove
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Cottage Grove, 76% of that work is heating and 24% is cooling.
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.
Cottage Grove and its neighbors
Cottage Grove borders 6 towns with climate data. January nights across them vary by 0.7°. Logan has both the coldest January nights (22°) and the hottest July afternoons (90°). Cottage Grove’s January low is 23° and its July high 90°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Cottage Grove compares
Compared with every U.S. town and city on TownTapestry, each counted once.
About as warm as it used to be
The last 30 years in Cottage Grove averaged 0.2° warmer than the 1900s. The biggest change is in January (+1.5°). The shift is smaller than in 100% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Cottage Grove’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 23° to 41°. June is the most reliable, staying within 9°.
Common questions about Cottage Grove’s climate
What is the coldest month in Cottage Grove?
January, with a typical high of 42° and a low of 23°.
What is the hottest month in Cottage Grove?
July, with a typical high of 90° and a low of 69°. About 50 days a year reach 90°.
How much snow does Cottage Grove get?
About 9 inches in a normal winter, most of it in January.
When is the first frost in Cottage Grove?
In half of years the first 32° night comes by October 27, and the last spring frost by April 11.
What is the rainiest month in Cottage Grove?
May, with 6.1 inches of rain and melted snow. The year totals 43 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Cottage Grove itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Humboldt, KS (6 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.