Boone, CO climate
Boone has chilly winters and hot summers, with very little rain. A typical July afternoon reaches 93°, a January night drops to 16°, and about 14 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Boone feels like
Winter
Spring
Summer
Fall
Boone 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 | 30-yr range |
|---|---|---|---|---|---|---|
| January | 48° | 16° | 0.3" | 3.4" | 2 | 24° – 37° |
| February | 51° | 20° | 0.2" | 2.4" | 2 | 30° – 43° |
| March | 60° | 28° | 0.5" | 1.8" | 3 | 39° – 49° |
| April | 67° | 35° | 1.1" | 0.8" | 4 | 45° – 56° |
| May | 77° | 45° | 1.4" | 0.1" | 6 | 55° – 67° |
| June | 88° | 55° | 1.4" | 0 | 3 | 66° – 77° |
| July | 93° | 60° | 2.0" | 0 | 5 | 73° – 81° |
| August | 90° | 58° | 2.0" | 0 | 4 | 70° – 78° |
| September | 83° | 50° | 0.8" | 0 | 2 | 60° – 73° |
| October | 70° | 36° | 0.8" | 0.2" | 2 | 47° – 60° |
| November | 57° | 25° | 0.4" | 1.5" | 1 | 33° – 47° |
| December | 47° | 17° | 0.2" | 4.0" | 2 | 26° – 35° |
| Year | 69° | 37° | 11.0" | 14.2" | 36 |
“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 Boone
Boone gets 11 inches of rain and melted snow a year. July is the wettest month and February the driest. Rain or snow falls on about 36 days a year.
About 161 frost-free days a year
In half of years the last 32° night comes by April 30 and the first one by October 9. That leaves about 161 frost-free days for gardens, shorter than 70% of U.S. towns.
Heating and cooling a home in Boone
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Boone, 83% of that work is heating and 17% is cooling, so the furnace matters far more than the air conditioner.
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 Boone 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 Boone averaged 1.6° warmer than the 1900s. The biggest change is in March (+3.2°). The shift is larger than in 74% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Boone’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. January swings the most: between 1991 and 2020 its average temperature ranged from 24° to 37°. August is the most reliable, staying within 9°.
Common questions about Boone’s climate
What is the coldest month in Boone?
January, with a typical high of 48° and a low of 16°.
What is the hottest month in Boone?
July, with a typical high of 93° and a low of 60°. About 72 days a year reach 90°.
How much snow does Boone get?
About 14 inches in a normal winter, most of it in December.
When is the first frost in Boone?
In half of years the first 32° night comes by October 9, and the last spring frost by April 30.
What is the rainiest month in Boone?
July, with 2.0 inches of rain and melted snow. The year totals 11 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Boone itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Boone 9nnw, CO (9 mi, snow) and Pueblo Mem Airport, CO (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.