Dexter, MO climate
Dexter has chilly winters and warm summers, with plenty of rain. A typical July afternoon reaches 90°, a January night drops to 27°, and about 3 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Dexter feels like
Winter
Spring
Summer
Fall
Dexter 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° | 27° | 3.5" | 0.8" | 8 | 1 | 29° – 44° |
| February | 49° | 31° | 3.5" | 1.2" | 8 | 1 | 29° – 48° |
| March | 59° | 38° | 4.8" | 0.6" | 10 | 0 | 42° – 60° |
| April | 70° | 47° | 5.3" | 0 | 10 | 0 | 52° – 64° |
| May | 79° | 58° | 5.2" | 0 | 10 | 0 | 64° – 75° |
| June | 87° | 66° | 3.9" | 0 | 8 | 0 | 72° – 82° |
| July | 90° | 70° | 4.2" | 0 | 7 | 0 | 75° – 85° |
| August | 89° | 67° | 3.2" | 0 | 6 | 0 | 73° – 84° |
| September | 82° | 60° | 3.3" | 0 | 6 | 0 | 67° – 77° |
| October | 72° | 48° | 3.7" | 0.1" | 6 | 0 | 55° – 65° |
| November | 58° | 38° | 4.5" | 0 | 8 | 0 | 40° – 53° |
| December | 47° | 31° | 4.2" | 0.4" | 9 | 0 | 26° – 47° |
| Year | 69° | 48° | 49.3" | 3.1" | 97 | 2 |
“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 Dexter
Dexter gets 49 inches of rain and melted snow a year. April is the wettest month and August the driest. Rain or snow falls on about 97 days a year.
About 221 frost-free days a year
In half of years the last 32° night comes by March 29 and the first one by November 3. That leaves about 221 frost-free days for gardens, longer than 82% of U.S. towns.
Heating and cooling a home in Dexter
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Dexter, 66% of that work is heating and 34% 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 Dexter 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 Dexter averaged 0.6° warmer than the 1900s. The biggest change is in February (+1.5°). The shift is smaller than in 95% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Dexter’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 26° to 47°. July is the most reliable, staying within 9°.
Common questions about Dexter’s climate
What is the coldest month in Dexter?
January, with a typical high of 44° and a low of 27°.
What is the hottest month in Dexter?
July, with a typical high of 90° and a low of 70°. About 59 days a year reach 90°.
How much snow does Dexter get?
About 3 inches in a normal winter, most of it in February.
When is the first frost in Dexter?
In half of years the first 32° night comes by November 3, and the last spring frost by March 29.
What is the rainiest month in Dexter?
April, with 5.3 inches of rain and melted snow. The year totals 49 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Dexter itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Sikeston Pwr Stn, MO (20 mi, snow) and Malden Municipal Airport, MO (13 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.