Chillicothe has chilly winters and warm summers
A typical July afternoon reaches 88°, a January night drops to 18°, and about 14 inches of snow falls in a normal winter.
A year in Chillicothe at a glance
Each month’s typical high and low, and what it brings.
What stands out about Chillicothe’s climate
Read from where Chillicothe sits among Missouri’s towns. The page puts what stands out first.
Warmer than it used to be
The last 30 years in Chillicothe averaged 0.5° warmer than the 1900s. The biggest change is in February (+1.4°).
A smaller shift than in 97% of U.S. towns.
Change by month
What a year in Chillicothe feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
14 inches of snow, 40 of rain and melt
May is the wettest month and January the driest. Rain or snow falls on about 109 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
About 187 frost-free days a year
In half of years the last 32° night comes by April 15 and the first by October 21.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Living with Chillicothe’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
187 frost-free days. The last frost comes by Apr 15 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 21.
About 14" a winter over 6 days with an inch or more, most in January. Snow covers the ground about 22 days a year.
Months averaging under 55° run from November through April. Heating is 83% of the year’s heating-and-cooling load.
About 36 days a year reach 90°, and July afternoons average 88°.
The nicest months are April, May, June, September and October. 8.2 miles of trails are waiting.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →Chillicothe and its neighbors
Cream Ridge has the coldest January nights next door (18°) and Green the hottest July afternoons (88°). Tap a town to see its climate.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
How Chillicothe compares
Against every U.S. town on TownTapestry, each counted once, with its place in Missouri.
Chillicothe 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 | 36° | 18° | 1.3" | 4.7" | 6 | 9 | 20° – 39° |
| February | 42° | 22° | 1.7" | 4.5" | 7 | 7 | 20° – 42° |
| March | 54° | 32° | 2.7" | 1.6" | 9 | 2 | 36° – 57° |
| April | 65° | 43° | 3.8" | 0.3" | 11 | 0 | 45° – 60° |
| May | 75° | 53° | 5.4" | 0 | 13 | 0 | 59° – 73° |
| June | 84° | 63° | 5.2" | 0 | 11 | 0 | 70° – 77° |
| July | 88° | 67° | 4.6" | 0 | 9 | 0 | 73° – 84° |
| August | 86° | 64° | 4.3" | 0 | 10 | 0 | 69° – 81° |
| September | 79° | 56° | 4.2" | 0 | 9 | 0 | 61° – 73° |
| October | 67° | 44° | 3.2" | 0 | 9 | 0 | 49° – 61° |
| November | 52° | 33° | 2.3" | 0.4" | 7 | 0 | 34° – 51° |
| December | 40° | 23° | 1.7" | 2.4" | 7 | 4 | 17° – 39° |
| Year | 64° | 43° | 40.2" | 13.9" | 109 | 22 |
Heating and cooling a home in Chillicothe
83% of the work is heating, so the furnace matters far more than the air conditioner.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 36° to 57°. June is the most reliable, staying within 8°.
Common questions about Chillicothe’s climate
What is the coldest month in Chillicothe?
January, with a typical high of 36° and a low of 18°.
What is the hottest month in Chillicothe?
July, with a typical high of 88° and a low of 67°. About 36 days a year reach 90°.
How much snow does Chillicothe get?
About 14 inches in a normal winter, most of it in January.
When is the first frost in Chillicothe?
In half of years the first 32° night comes by October 21, and the last spring frost by April 15.
What is the rainiest month in Chillicothe?
May, with 5.4 inches of rain and melted snow. The year totals 40 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Chillicothe.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Chillicothe itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Chillicothe 2s, MO (1 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.