Walnut Grove, MO climate
Walnut Grove has chilly winters and warm summers. A typical July afternoon reaches 89°, 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 Walnut Grove feels like
Winter
Spring
Summer
Fall
Walnut 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 | 44° | 23° | 2.3" | 3.9" | 5 | 2 | 28° – 44° |
| February | 49° | 27° | 2.2" | 2.4" | 6 | 1 | 30° – 48° |
| March | 58° | 35° | 3.5" | 1.5" | 9 | 1 | 40° – 58° |
| April | 68° | 45° | 4.8" | 0 | 9 | 0 | 50° – 62° |
| May | 76° | 54° | 5.7" | 0 | 11 | 0 | 60° – 73° |
| June | 84° | 63° | 4.7" | 0 | 9 | 0 | 69° – 79° |
| July | 89° | 67° | 4.1" | 0 | 7 | 0 | 74° – 85° |
| August | 88° | 66° | 3.6" | 0 | 7 | 0 | 70° – 81° |
| September | 81° | 58° | 4.3" | 0 | 7 | 0 | 64° – 77° |
| October | 70° | 46° | 3.6" | 0 | 7 | 0 | 52° – 64° |
| November | 57° | 36° | 3.4" | 0.7" | 7 | 0 | 39° – 54° |
| December | 47° | 27° | 2.6" | 0.8" | 5 | 1 | 24° – 44° |
| Year | 68° | 46° | 44.6" | 9.3" | 87 | 4 |
“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 Walnut Grove
Walnut Grove gets 45 inches of rain and melted snow a year. May is the wettest month and February the driest. Rain or snow falls on about 87 days a year.
About 196 frost-free days a year
In half of years the last 32° night comes by April 11 and the first one by October 24. That leaves about 196 frost-free days for gardens, longer than 70% of U.S. towns.
Heating and cooling a home in Walnut Grove
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Walnut Grove, 74% of that work is heating and 26% 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.
How Walnut Grove 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 Walnut Grove averaged 0.7° warmer than the 1900s. The biggest change is in February (+1.8°). The shift is smaller than in 88% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Walnut 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 24° to 44°. June is the most reliable, staying within 10°.
Common questions about Walnut Grove’s climate
What is the coldest month in Walnut Grove?
January, with a typical high of 44° and a low of 23°.
What is the hottest month in Walnut Grove?
July, with a typical high of 89° and a low of 67°. About 55 days a year reach 90°.
How much snow does Walnut Grove get?
About 9 inches in a normal winter, most of it in January.
When is the first frost in Walnut Grove?
In half of years the first 32° night comes by October 24, and the last spring frost by April 11.
What is the rainiest month in Walnut Grove?
May, with 5.7 inches of rain and melted snow. The year totals 45 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Walnut Grove itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Ash Grove 4s, MO (11 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.