Filer, ID climate
Filer has chilly winters and warm summers, with very little rain. A typical July afternoon reaches 90°, a January night drops to 22°, and about 24 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Filer feels like
Winter
Spring
Summer
Fall
Filer 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 | 38° | 22° | 1.2" | 7.8" | 11 | 21° – 37° |
| February | 44° | 25° | 0.8" | 5.5" | 9 | 26° – 43° |
| March | 54° | 31° | 1.0" | 1.9" | 9 | 37° – 48° |
| April | 61° | 35° | 1.0" | 0.5" | 10 | 43° – 53° |
| May | 70° | 43° | 1.3" | 0 | 9 | 50° – 62° |
| June | 80° | 50° | 0.7" | 0 | 7 | 60° – 73° |
| July | 90° | 58° | 0.2" | 0 | 3 | 64° – 79° |
| August | 88° | 55° | 0.2" | 0 | 3 | 66° – 75° |
| September | 78° | 47° | 0.5" | 0 | 3 | 59° – 66° |
| October | 64° | 37° | 0.8" | 0.5" | 5 | 42° – 57° |
| November | 49° | 28° | 0.9" | 2.0" | 8 | 31° – 45° |
| December | 38° | 22° | 1.3" | 6.0" | 10 | 25° – 36° |
| Year | 63° | 38° | 9.9" | 24.2" | 86 |
“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 Filer
Filer gets 10 inches of rain and melted snow a year. December is the wettest month and July the driest. Rain or snow falls on about 86 days a year.
About 166 frost-free days a year
In half of years the last 32° night comes by May 2 and the first one by October 14. That leaves about 166 frost-free days for gardens, shorter than 64% of U.S. towns.
Heating and cooling a home in Filer
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Filer, 89% of that work is heating and 11% 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 Filer 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 Filer averaged 1.3° warmer than the 1900s. The biggest change is in January (+2.9°). The shift is larger than in 53% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Filer’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 26° to 43°. September is the most reliable, staying within 7°.
Common questions about Filer’s climate
What is the coldest month in Filer?
December, with a typical high of 38° and a low of 22°.
What is the hottest month in Filer?
July, with a typical high of 90° and a low of 58°. About 54 days a year reach 90°.
How much snow does Filer get?
About 24 inches in a normal winter, most of it in January.
When is the first frost in Filer?
In half of years the first 32° night comes by October 14, and the last spring frost by May 2.
What is the rainiest month in Filer?
December, with 1.3 inches of rain and melted snow. The year totals 10 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Filer itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Twin Falls 6 E, ID (13 mi, snow) and Jerome, ID (12 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.