Silt, CO climate
Silt has cold winters and warm summers, with very little rain. A typical July afternoon reaches 91°, a January night drops to 15°, and about 27 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Silt feels like
Winter
Spring
Summer
Fall
Silt 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 | 38° | 15° | 0.9" | 6.9" | 8 | 22 | 19° – 34° |
| February | 44° | 20° | 0.9" | 5.5" | 7 | 14 | 26° – 39° |
| March | 55° | 28° | 1.1" | 1.8" | 7 | 2 | 36° – 47° |
| April | 62° | 33° | 1.2" | 1.1" | 9 | 1 | 43° – 53° |
| May | 73° | 41° | 1.4" | 0 | 10 | 0 | 51° – 61° |
| June | 85° | 49° | 0.7" | 0 | 5 | 0 | 61° – 71° |
| July | 91° | 56° | 0.9" | 0 | 10 | 0 | 68° – 77° |
| August | 88° | 54° | 1.0" | 0 | 9 | 0 | 68° – 75° |
| September | 79° | 45° | 1.6" | 0 | 8 | 0 | 57° – 66° |
| October | 66° | 34° | 1.4" | 0.9" | 9 | 1 | 43° – 55° |
| November | 50° | 24° | 0.9" | 2.7" | 7 | 2 | 30° – 44° |
| December | 38° | 15° | 1.0" | 7.9" | 8 | 14 | 19° – 33° |
| Year | 64° | 34° | 12.9" | 26.8" | 96 | 56 |
“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 Silt
Silt gets 13 inches of rain and melted snow a year. September is the wettest month and June the driest. Rain or snow falls on about 96 days a year. Snow covers the ground about 56 days of the year.
About 143 frost-free days a year
In half of years the last 32° night comes by May 11 and the first one by October 4. That leaves about 143 frost-free days for gardens, shorter than 87% of U.S. towns.
Heating and cooling a home in Silt
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Silt, 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.
How Silt 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 Silt averaged 1.8° warmer than the 1900s. The biggest change is in March (+3.4°). The shift is larger than in 85% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Silt’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 19° to 34°. August is the most reliable, staying within 8°.
Common questions about Silt’s climate
What is the coldest month in Silt?
January, with a typical high of 38° and a low of 15°.
What is the hottest month in Silt?
July, with a typical high of 91° and a low of 56°. About 54 days a year reach 90°.
How much snow does Silt get?
About 27 inches in a normal winter, most of it in December.
When is the first frost in Silt?
In half of years the first 32° night comes by October 4, and the last spring frost by May 11.
What is the rainiest month in Silt?
September, with 1.6 inches of rain and melted snow. The year totals 13 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Silt itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Rifle 3ene, CO (4 mi, snow) and Rifle Garfield Co Airport, CO (4 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.