One Road, SD climate
One Road has cold, snowy winters and pleasant summers. A typical July afternoon reaches 79°, a January night drops to 4°, and about 36 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in One Road feels like
Winter
Spring
Summer
Fall
One Road 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 | 19° | 4° | 0.7" | 6.6" | 6 | 28 | -2° – 24° |
| February | 23° | 7° | 0.8" | 6.0" | 4 | 24 | 1° – 26° |
| March | 36° | 19° | 1.2" | 5.5" | 5 | 17 | 17° – 41° |
| April | 51° | 31° | 2.3" | 5.0" | 6 | 4 | 31° – 49° |
| May | 65° | 44° | 3.2" | 0 | 10 | 0 | 50° – 62° |
| June | 75° | 55° | 4.0" | 0 | 10 | 0 | 59° – 69° |
| July | 79° | 59° | 3.9" | 0 | 9 | 0 | 61° – 75° |
| August | 78° | 57° | 2.6" | 0 | 7 | 0 | 62° – 71° |
| September | 70° | 49° | 2.6" | 0 | 7 | 0 | 53° – 64° |
| October | 54° | 35° | 2.4" | 1.2" | 7 | 0 | 37° – 50° |
| November | 37° | 22° | 0.9" | 5.0" | 5 | 7 | 17° – 40° |
| December | 24° | 10° | 0.8" | 6.3" | 6 | 22 | 2° – 25° |
| Year | 51° | 33° | 25.4" | 35.6" | 81 | 102 |
“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 One Road
One Road gets 25 inches of rain and melted snow a year. June is the wettest month and January the driest. Rain or snow falls on about 81 days a year. Snow covers the ground about 102 days of the year.
About 164 frost-free days a year
In half of years the last 32° night comes by May 1 and the first one by October 12. That leaves about 164 frost-free days for gardens, shorter than 67% of U.S. towns.
Heating and cooling a home in One Road
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In One Road, 93% of that work is heating and 7% 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.
One Road and its neighbors
One Road borders 4 towns with climate data. January nights across them vary by 1.8°. Kosciusko has the coldest January nights (2°) and Agency the hottest July afternoons (82°). One Road’s January low is 4° and its July high 79°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How One Road 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 One Road averaged 1.0° warmer than the 1900s. The biggest change is in January (+2.8°). The shift is smaller than in 67% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at One Road’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 -2° to 24°. August is the most reliable, staying within 9°.
Common questions about One Road’s climate
What is the coldest month in One Road?
January, with a typical high of 19° and a low of 4°.
What is the hottest month in One Road?
July, with a typical high of 79° and a low of 59°. About 5 days a year reach 90°.
How much snow does One Road get?
About 36 inches in a normal winter, most of it in January.
When is the first frost in One Road?
In half of years the first 32° night comes by October 12, and the last spring frost by May 1.
What is the rainiest month in One Road?
June, with 4.0 inches of rain and melted snow. The year totals 25 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for One Road itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Waubay Natl Wild Life, SD (10 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.