Coolin, ID climate
Coolin has chilly, snowy winters and pleasant summers. A typical July afternoon reaches 82°, a January night drops to 21°, and about 74 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Coolin feels like
Winter
Spring
Summer
Fall
Coolin 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° | 21° | 4.0" | 21.8" | 16 | 31 | 20° – 32° |
| February | 37° | 21° | 2.7" | 11.3" | 12 | 27 | 20° – 35° |
| March | 46° | 26° | 3.4" | 5.4" | 14 | 21 | 31° – 43° |
| April | 56° | 31° | 2.5" | 0.3" | 13 | 2 | 39° – 51° |
| May | 66° | 39° | 2.7" | 0 | 12 | 0 | 47° – 58° |
| June | 72° | 44° | 2.7" | 0 | 12 | 0 | 55° – 66° |
| July | 82° | 48° | 1.1" | 0 | 6 | 0 | 57° – 70° |
| August | 82° | 47° | 0.9" | 0 | 5 | 0 | 59° – 68° |
| September | 71° | 40° | 1.4" | 0 | 7 | 0 | 51° – 60° |
| October | 54° | 32° | 2.9" | 0.2" | 12 | 0 | 38° – 50° |
| November | 40° | 26° | 4.3" | 9.2" | 16 | 7 | 27° – 40° |
| December | 32° | 21° | 4.4" | 25.7" | 17 | 25 | 20° – 31° |
| Year | 56° | 33° | 32.7" | 73.9" | 142 | 114 |
“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 Coolin
Coolin gets 33 inches of rain and melted snow a year. December is the wettest month and August the driest. Rain or snow falls on about 142 days a year. Snow covers the ground about 114 days of the year.
About 114 frost-free days a year
In half of years the last 32° night comes by May 20 and the first one by September 13. That leaves about 114 frost-free days for gardens, shorter than 98% of U.S. towns.
Heating and cooling a home in Coolin
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Coolin, 98% of that work is heating and 2% 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 Coolin 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 Coolin averaged 1.3° warmer than the 1900s. The biggest change is in January (+3.9°). The shift is larger than in 54% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Coolin’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 20° to 35°. August is the most reliable, staying within 9°.
Common questions about Coolin’s climate
What is the coldest month in Coolin?
December, with a typical high of 32° and a low of 21°.
What is the hottest month in Coolin?
July, with a typical high of 82° and a low of 48°. About 17 days a year reach 90°.
How much snow does Coolin get?
About 74 inches in a normal winter, most of it in December.
When is the first frost in Coolin?
In half of years the first 32° night comes by September 13, and the last spring frost by May 20.
What is the rainiest month in Coolin?
December, with 4.4 inches of rain and melted snow. The year totals 33 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Coolin itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Priest Rvr Exp Stn, ID (9 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.