Black Mountain, NC climate
Black Mountain has chilly winters and pleasant summers, with plenty of rain. A typical July afternoon reaches 82°, a January night drops to 27°, and about 2 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Black Mountain feels like
Winter
Spring
Summer
Fall
Black Mountain 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 | 46° | 27° | 4.8" | 1.5" | 11 | 0 | 29° – 42° |
| February | 50° | 30° | 3.8" | 0.1" | 11 | 0 | 31° – 49° |
| March | 57° | 36° | 4.8" | 0 | 12 | 0 | 39° – 56° |
| April | 66° | 43° | 5.0" | 0 | 11 | 0 | 50° – 59° |
| May | 73° | 51° | 5.1" | 0 | 13 | 0 | 57° – 67° |
| June | 79° | 58° | 4.8" | 0 | 14 | 0 | 65° – 72° |
| July | 82° | 62° | 5.0" | 0 | 15 | 0 | 68° – 75° |
| August | 81° | 61° | 5.3" | 0 | 14 | 0 | 68° – 75° |
| September | 75° | 55° | 5.0" | 0 | 11 | 0 | 62° – 71° |
| October | 66° | 44° | 4.2" | 0 | 9 | 0 | 52° – 59° |
| November | 57° | 35° | 4.4" | 0 | 9 | 0 | 40° – 51° |
| December | 49° | 30° | 4.8" | 0.5" | 11 | 0 | 29° – 50° |
| Year | 65° | 44° | 57.0" | 2.1" | 140 | 0 |
“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 Black Mountain
Black Mountain gets 57 inches of rain and melted snow a year. August is the wettest month and February the driest. Rain or snow falls on about 140 days a year.
About 184 frost-free days a year
In half of years the last 32° night comes by April 19 and the first one by October 23. That leaves about 184 frost-free days for gardens, longer than 57% of U.S. towns.
Heating and cooling a home in Black Mountain
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Black Mountain, 84% of that work is heating and 16% 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 Black Mountain 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 Black Mountain averaged 1.0° warmer than the 1900s. The biggest change is in December (+2.0°). The shift is smaller than in 70% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Black Mountain’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 29° to 50°. July is the most reliable, staying within 7°.
Common questions about Black Mountain’s climate
What is the coldest month in Black Mountain?
January, with a typical high of 46° and a low of 27°.
What is the hottest month in Black Mountain?
July, with a typical high of 82° and a low of 62°. About 6 days a year reach 90°.
How much snow does Black Mountain get?
About 2 inches in a normal winter, most of it in January.
When is the first frost in Black Mountain?
In half of years the first 32° night comes by October 23, and the last spring frost by April 19.
What is the rainiest month in Black Mountain?
August, with 5.3 inches of rain and melted snow. The year totals 57 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Black Mountain itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at North Fk 2, NC (3 mi, snow) and Black Mtn 2 W, NC (2 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.