Harviell, MO climate
Harviell has chilly winters and warm summers, with plenty of rain. A typical July afternoon reaches 90°, a January night drops to 27°, and about 5 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Harviell feels like
Winter
Spring
Summer
Fall
Harviell 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 | 45° | 27° | 3.4" | 0.6" | 9 | 1 | 30° – 44° |
| February | 50° | 31° | 3.6" | 1.6" | 8 | 1 | 31° – 48° |
| March | 60° | 38° | 4.7" | 1.3" | 11 | 0 | 42° – 61° |
| April | 71° | 47° | 5.5" | 0 | 10 | 0 | 52° – 65° |
| May | 79° | 57° | 5.3" | 0 | 11 | 0 | 64° – 75° |
| June | 87° | 66° | 3.7" | 0 | 9 | 0 | 72° – 82° |
| July | 90° | 70° | 4.2" | 0 | 8 | 0 | 75° – 85° |
| August | 89° | 67° | 3.6" | 0 | 8 | 0 | 73° – 84° |
| September | 83° | 59° | 3.5" | 0 | 7 | 0 | 67° – 77° |
| October | 72° | 47° | 3.8" | 0 | 8 | 0 | 55° – 65° |
| November | 59° | 37° | 4.6" | 0.2" | 9 | 0 | 41° – 54° |
| December | 48° | 30° | 4.2" | 1.7" | 9 | 1 | 27° – 47° |
| Year | 69° | 48° | 50.1" | 5.4" | 106 | 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 Harviell
Harviell gets 50 inches of rain and melted snow a year. April is the wettest month and January the driest. Rain or snow falls on about 106 days a year.
About 222 frost-free days a year
In half of years the last 32° night comes by March 29 and the first one by November 5. That leaves about 222 frost-free days for gardens, longer than 83% of U.S. towns.
Heating and cooling a home in Harviell
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Harviell, 70% of that work is heating and 30% 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 Harviell 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 Harviell averaged 0.5° warmer than the 1900s. The biggest change is in February (+1.3°). The shift is smaller than in 97% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Harviell’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 27° to 47°. July is the most reliable, staying within 10°.
Common questions about Harviell’s climate
What is the coldest month in Harviell?
January, with a typical high of 45° and a low of 27°.
What is the hottest month in Harviell?
July, with a typical high of 90° and a low of 70°. About 58 days a year reach 90°.
How much snow does Harviell get?
About 5 inches in a normal winter, most of it in December.
When is the first frost in Harviell?
In half of years the first 32° night comes by November 5, and the last spring frost by March 29.
What is the rainiest month in Harviell?
April, with 5.5 inches of rain and melted snow. The year totals 50 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Harviell itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Poplar Bluff, MO (8 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.