Black Rock, NM climate
Black Rock has chilly winters and warm summers, with very little rain. A typical July afternoon reaches 89°, a January night drops to 16°, and about 10 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Black Rock feels like
Winter
Spring
Summer
Fall
Black Rock 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 | 47° | 16° | 0.9" | 2.8" | 4 | 1 | 26° – 37° |
| February | 51° | 19° | 0.8" | 1.7" | 4 | 1 | 31° – 41° |
| March | 59° | 24° | 0.8" | 0.9" | 4 | 0 | 37° – 46° |
| April | 66° | 29° | 0.5" | 0.3" | 3 | 0 | 43° – 53° |
| May | 76° | 37° | 0.6" | 0.1" | 3 | 0 | 51° – 60° |
| June | 87° | 45° | 0.3" | 0 | 2 | 0 | 62° – 70° |
| July | 89° | 54° | 1.6" | 0 | 7 | 0 | 67° – 75° |
| August | 86° | 53° | 1.9" | 0 | 7 | 0 | 66° – 72° |
| September | 81° | 45° | 1.1" | 0 | 4 | 0 | 59° – 66° |
| October | 70° | 33° | 1.0" | 0.1" | 4 | 0 | 47° – 56° |
| November | 57° | 22° | 0.7" | 0.7" | 3 | 0 | 33° – 44° |
| December | 47° | 15° | 0.8" | 3.4" | 4 | 2 | 27° – 37° |
| Year | 68° | 33° | 11.0" | 10.0" | 46 | 4 |
“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 Rock
Black Rock gets 11 inches of rain and melted snow a year. August is the wettest month and June the driest. Rain or snow falls on about 46 days a year.
About 127 frost-free days a year
In half of years the last 32° night comes by May 29 and the first one by October 2. That leaves about 127 frost-free days for gardens, shorter than 96% of U.S. towns.
Heating and cooling a home in Black Rock
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Black Rock, 91% of that work is heating and 9% 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 Rock 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 Rock averaged 1.1° warmer than the 1900s. The biggest change is in March (+2.2°). The shift is smaller than in 57% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Black Rock’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. November swings the most: between 1991 and 2020 its average temperature ranged from 33° to 44°. August is the most reliable, staying within 6°.
Common questions about Black Rock’s climate
What is the coldest month in Black Rock?
December, with a typical high of 47° and a low of 15°.
What is the hottest month in Black Rock?
July, with a typical high of 89° and a low of 54°. About 54 days a year reach 90°.
How much snow does Black Rock get?
About 10 inches in a normal winter, most of it in December.
When is the first frost in Black Rock?
In half of years the first 32° night comes by October 2, and the last spring frost by May 29.
What is the rainiest month in Black Rock?
August, with 1.9 inches of rain and melted snow. The year totals 11 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Black Rock itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Zuni, NM (2 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.