Rainy Creek/Cheyenne, SD climate
Rainy Creek/Cheyenne has cold, snowy winters and warm summers, with very little rain. A typical July afternoon reaches 88°, a January night drops to 11°, and about 37 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Rainy Creek/Cheyenne feels like
Winter
Spring
Summer
Fall
Rainy Creek/Cheyenne 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 | 33° | 11° | 0.4" | 4.4" | 5 | 16 | 12° – 36° |
| February | 37° | 14° | 0.5" | 5.6" | 5 | 12 | 7° – 38° |
| March | 48° | 23° | 0.9" | 6.3" | 6 | 8 | 22° – 48° |
| April | 59° | 33° | 2.0" | 6.6" | 8 | 4 | 39° – 52° |
| May | 69° | 43° | 3.4" | 0.8" | 11 | 0 | 49° – 61° |
| June | 80° | 54° | 3.1" | 0 | 11 | 0 | 61° – 72° |
| July | 88° | 60° | 2.3" | 0 | 8 | 0 | 65° – 81° |
| August | 87° | 58° | 1.6" | 0 | 7 | 0 | 66° – 78° |
| September | 78° | 48° | 1.2" | 0 | 5 | 0 | 56° – 69° |
| October | 62° | 35° | 1.6" | 3.0" | 6 | 2 | 40° – 54° |
| November | 47° | 22° | 0.5" | 3.9" | 5 | 6 | 23° – 44° |
| December | 35° | 13° | 0.4" | 6.1" | 5 | 12 | 12° – 33° |
| Year | 60° | 34° | 17.8" | 36.7" | 81 | 59 |
“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 Rainy Creek/Cheyenne
Rainy Creek/Cheyenne gets 18 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 81 days a year. Snow covers the ground about 59 days of the year.
About 146 frost-free days a year
In half of years the last 32° night comes by May 8 and the first one by October 3. That leaves about 146 frost-free days for gardens, shorter than 84% of U.S. towns.
Heating and cooling a home in Rainy Creek/Cheyenne
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Rainy Creek/Cheyenne, 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.
Rainy Creek/Cheyenne and its neighbors
Rainy Creek/Cheyenne borders 2 towns with climate data. January nights across them vary by 1.9°. Dakota has both the coldest January nights (10°) and the hottest July afternoons (88°). Rainy Creek/Cheyenne’s January low is 11° and its July high 88°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Rainy Creek/Cheyenne 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 Rainy Creek/Cheyenne averaged 0.9° warmer than the 1900s. The biggest change is in January (+3.4°). The shift is smaller than in 76% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Rainy Creek/Cheyenne’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 38°. June is the most reliable, staying within 11°.
Common questions about Rainy Creek/Cheyenne’s climate
What is the coldest month in Rainy Creek/Cheyenne?
January, with a typical high of 33° and a low of 11°.
What is the hottest month in Rainy Creek/Cheyenne?
July, with a typical high of 88° and a low of 60°. About 37 days a year reach 90°.
How much snow does Rainy Creek/Cheyenne get?
About 37 inches in a normal winter, most of it in April.
When is the first frost in Rainy Creek/Cheyenne?
In half of years the first 32° night comes by October 3, and the last spring frost by May 8.
What is the rainiest month in Rainy Creek/Cheyenne?
May, with 3.4 inches of rain and melted snow. The year totals 18 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Rainy Creek/Cheyenne itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Elm Springs 3 Ese, SD (15 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.