Challenge-Brownsville, CA climate
Challenge-Brownsville has mild winters and warm summers, with plenty of rain. A typical July afternoon reaches 89°, a January night drops to 37°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Challenge-Brownsville feels like
Winter
Spring
Summer
Fall
Challenge-Brownsville 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 | 54° | 37° | 11.5" | 0 | 12 | 0 | 41° – 53° |
| February | 55° | 37° | 11.0" | 0 | 11 | 0 | 39° – 53° |
| March | 59° | 39° | 9.7" | 0 | 11 | 0 | 42° – 56° |
| April | 64° | 42° | 5.0" | 0 | 8 | 0 | 47° – 57° |
| May | 72° | 49° | 2.9" | 0 | 5 | 0 | 50° – 69° |
| June | 82° | 56° | 0.9" | 0 | 2 | 0 | 63° – 74° |
| July | 89° | 62° | 0.0" | 0 | 0 | 0 | 71° – 79° |
| August | 89° | 61° | 0.1" | 0 | 1 | 0 | 72° – 78° |
| September | 84° | 57° | 0.5" | 0 | 2 | 0 | 66° – 75° |
| October | 73° | 50° | 3.4" | 0 | 4 | 0 | 57° – 68° |
| November | 59° | 41° | 6.5" | 0 | 8 | 0 | 42° – 57° |
| December | 52° | 36° | 12.3" | 0 | 12 | 0 | 41° – 49° |
| Year | 69° | 47° | 63.8" | 0.0" | 75 | 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 Challenge-Brownsville
Challenge-Brownsville gets 64 inches of rain and melted snow a year. December is the wettest month and July the driest. Rain or snow falls on about 75 days a year.
About 229 frost-free days a year
In half of years the last 32° night comes by April 1 and the first one by November 17. That leaves about 229 frost-free days for gardens, longer than 86% of U.S. towns.
Heating and cooling a home in Challenge-Brownsville
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Challenge-Brownsville, 76% of that work is heating and 24% 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 Challenge-Brownsville 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 Challenge-Brownsville averaged 1.1° warmer than the 1900s. The biggest change is in January (+2.2°). The shift is smaller than in 58% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Challenge-Brownsville’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. May swings the most: between 1991 and 2020 its average temperature ranged from 50° to 69°. August is the most reliable, staying within 7°.
Common questions about Challenge-Brownsville’s climate
What is the coldest month in Challenge-Brownsville?
December, with a typical high of 52° and a low of 36°.
What is the hottest month in Challenge-Brownsville?
July, with a typical high of 89° and a low of 62°. About 79 days a year reach 90°.
How much snow does Challenge-Brownsville get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Challenge-Brownsville?
In half of years the first 32° night comes by November 17, and the last spring frost by April 1.
What is the rainiest month in Challenge-Brownsville?
December, with 12.3 inches of rain and melted snow. The year totals 64 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Challenge-Brownsville itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Colgate Powerhouse, CA (10 mi, snow) and Dobbins 1 S, CA (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.