Blackburn, MO climate
Blackburn has chilly winters and warm summers. A typical July afternoon reaches 88°, a January night drops to 20°, and about 8 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Blackburn feels like
Winter
Spring
Summer
Fall
Blackburn 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 | 38° | 20° | 1.5" | 3.0" | 7 | 3 | 22° – 40° |
| February | 43° | 24° | 1.8" | 2.2" | 7 | 3 | 24° – 44° |
| March | 55° | 33° | 2.8" | 0.9" | 10 | 1 | 37° – 58° |
| April | 65° | 44° | 4.2" | 0 | 11 | 0 | 46° – 61° |
| May | 75° | 54° | 5.2" | 0 | 12 | 0 | 59° – 73° |
| June | 84° | 64° | 5.0" | 0 | 11 | 0 | 70° – 78° |
| July | 88° | 67° | 4.9" | 0 | 9 | 0 | 73° – 84° |
| August | 86° | 65° | 4.1" | 0 | 8 | 0 | 70° – 81° |
| September | 79° | 57° | 4.0" | 0 | 8 | 0 | 62° – 74° |
| October | 68° | 45° | 3.2" | 0.1" | 9 | 0 | 50° – 61° |
| November | 54° | 34° | 2.6" | 0.3" | 8 | 0 | 36° – 51° |
| December | 42° | 25° | 1.9" | 1.6" | 7 | 1 | 18° – 40° |
| Year | 65° | 44° | 41.1" | 8.1" | 106 | 8 |
“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 Blackburn
Blackburn gets 41 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 106 days a year. Snow covers the ground about 8 days of the year.
About 207 frost-free days a year
In half of years the last 32° night comes by April 6 and the first one by October 30. That leaves about 207 frost-free days for gardens, longer than 76% of U.S. towns.
Heating and cooling a home in Blackburn
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Blackburn, 79% of that work is heating and 21% 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 Blackburn 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 Blackburn averaged 0.8° warmer than the 1900s. The biggest change is in December (+2.0°). The shift is smaller than in 85% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Blackburn’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 18° to 40°. June is the most reliable, staying within 8°.
Common questions about Blackburn’s climate
What is the coldest month in Blackburn?
January, with a typical high of 38° and a low of 20°.
What is the hottest month in Blackburn?
July, with a typical high of 88° and a low of 67°. About 37 days a year reach 90°.
How much snow does Blackburn get?
About 8 inches in a normal winter, most of it in January.
When is the first frost in Blackburn?
In half of years the first 32° night comes by October 30, and the last spring frost by April 6.
What is the rainiest month in Blackburn?
May, with 5.2 inches of rain and melted snow. The year totals 41 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Blackburn itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Marshall, MO (14 mi, snow) and Waverly, MO (8 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.