Lower Brule, SD climate
Lower Brule has cold winters and warm summers, with very little rain. A typical July afternoon reaches 88°, a January night drops to 9°, and about 19 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Lower Brule feels like
Winter
Spring
Summer
Fall
Lower Brule 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 | 29° | 9° | 0.5" | 2.7" | 3 | 10° – 35° |
| February | 34° | 13° | 0.7" | 5.4" | 3 | 7° – 34° |
| March | 46° | 23° | 1.0" | 3.0" | 4 | 24° – 48° |
| April | 59° | 33° | 2.3" | 2.6" | 6 | 37° – 52° |
| May | 70° | 45° | 3.3" | 0 | 11 | 52° – 63° |
| June | 80° | 56° | 3.7" | 0 | 10 | 63° – 72° |
| July | 88° | 62° | 2.9" | 0 | 9 | 66° – 81° |
| August | 85° | 60° | 2.4" | 0 | 9 | 67° – 76° |
| September | 77° | 50° | 1.9" | 0 | 6 | 58° – 69° |
| October | 61° | 37° | 1.7" | 0.1" | 6 | 41° – 54° |
| November | 45° | 24° | 0.6" | 1.2" | 3 | 24° – 43° |
| December | 32° | 13° | 0.5" | 3.9" | 2 | 10° – 30° |
| Year | 59° | 35° | 21.4" | 18.9" | 71 |
“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 Lower Brule
Lower Brule gets 21 inches of rain and melted snow a year. June is the wettest month and January the driest. Rain or snow falls on about 71 days a year.
About 152 frost-free days a year
In half of years the last 32° night comes by May 6 and the first one by October 5. That leaves about 152 frost-free days for gardens, shorter than 79% of U.S. towns.
Heating and cooling a home in Lower Brule
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Lower Brule, 90% of that work is heating and 10% 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 Lower Brule 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 Lower Brule averaged 1.0° warmer than the 1900s. The biggest change is in January (+3.5°). The shift is smaller than in 66% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Lower Brule’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 7° to 34°. August is the most reliable, staying within 9°.
Common questions about Lower Brule’s climate
What is the coldest month in Lower Brule?
January, with a typical high of 29° and a low of 9°.
What is the hottest month in Lower Brule?
July, with a typical high of 88° and a low of 62°. About 31 days a year reach 90°.
How much snow does Lower Brule get?
About 19 inches in a normal winter, most of it in February.
When is the first frost in Lower Brule?
In half of years the first 32° night comes by October 5, and the last spring frost by May 6.
What is the rainiest month in Lower Brule?
June, with 3.7 inches of rain and melted snow. The year totals 21 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Lower Brule itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Lake Sharpe Prj, SD (6 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.