Brentford, SD climate
Brentford has cold, snowy winters and warm summers, with very little rain. A typical July afternoon reaches 84°, a January night drops to 3°, and about 34 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Brentford feels like
Winter
Spring
Summer
Fall
Brentford 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 | 22° | 3° | 0.5" | 5.2" | 3 | 0° – 28° |
| February | 28° | 8° | 0.6" | 7.5" | 4 | 2° – 29° |
| March | 41° | 20° | 0.9" | 5.5" | 4 | 20° – 44° |
| April | 56° | 32° | 1.9" | 1.2" | 6 | 35° – 51° |
| May | 69° | 45° | 3.2" | 0 | 8 | 52° – 64° |
| June | 79° | 55° | 3.6" | 0 | 8 | 62° – 72° |
| July | 84° | 60° | 3.2" | 0 | 6 | 64° – 78° |
| August | 82° | 58° | 2.2" | 0 | 6 | 64° – 74° |
| September | 74° | 48° | 2.2" | 0 | 6 | 54° – 66° |
| October | 58° | 35° | 2.1" | 0.8" | 5 | 39° – 51° |
| November | 41° | 21° | 0.7" | 3.2" | 3 | 19° – 41° |
| December | 28° | 9° | 0.6" | 10.7" | 4 | 5° – 26° |
| Year | 55° | 33° | 21.6" | 34.1" | 62 |
“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 Brentford
Brentford gets 22 inches of rain and melted snow a year. June is the wettest month and January the driest. Rain or snow falls on about 62 days a year.
About 137 frost-free days a year
In half of years the last 32° night comes by May 11 and the first one by September 27. That leaves about 137 frost-free days for gardens, shorter than 91% of U.S. towns.
Heating and cooling a home in Brentford
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Brentford, 94% of that work is heating and 6% 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.
Brentford and its neighbors
Brentford borders 1 town with climate data. January nights across them vary by 0.2°. La Prairie has both the coldest January nights (3°) and the hottest July afternoons (84°). Brentford’s January low is 3° and its July high 84°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Brentford 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 Brentford averaged 1.0° warmer than the 1900s. The biggest change is in January (+3.1°). The shift is smaller than in 73% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Brentford’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 0° to 28°. August is the most reliable, staying within 10°.
Common questions about Brentford’s climate
What is the coldest month in Brentford?
January, with a typical high of 22° and a low of 3°.
What is the hottest month in Brentford?
July, with a typical high of 84° and a low of 60°. About 16 days a year reach 90°.
How much snow does Brentford get?
About 34 inches in a normal winter, most of it in December.
When is the first frost in Brentford?
In half of years the first 32° night comes by September 27, and the last spring frost by May 11.
What is the rainiest month in Brentford?
June, with 3.6 inches of rain and melted snow. The year totals 22 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Brentford itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Stratford 7sw, SD (6 mi, snow) and Mellette 4 W, SD (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.