Silverton, CO climate
Silverton has cold winters and cool summers. A typical July afternoon reaches 70°, a January night drops to 2°.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Silverton feels like
Winter
Spring
Summer
Fall
Silverton weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 34° | 2° | 2.4" | 11° – 23° |
| February | 36° | 5° | 2.6" | 15° – 27° |
| March | 42° | 12° | 2.5" | 22° – 32° |
| April | 47° | 19° | 2.2" | 29° – 39° |
| May | 56° | 27° | 2.0" | 37° – 45° |
| June | 66° | 34° | 1.0" | 46° – 54° |
| July | 70° | 40° | 2.4" | 51° – 58° |
| August | 68° | 38° | 2.8" | 51° – 57° |
| September | 62° | 32° | 2.7" | 42° – 50° |
| October | 52° | 24° | 2.4" | 33° – 42° |
| November | 41° | 13° | 2.2" | 20° – 35° |
| December | 33° | 3° | 2.3" | 13° – 25° |
| Year | 51° | 21° | 27.5" |
“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 Silverton
Silverton gets 27 inches of rain and melted snow a year. August is the wettest month and June the driest.
About 101 frost-free days a year
In half of years the last 32° night comes by June 8 and the first one by September 17. That leaves about 101 frost-free days for gardens, shorter than 99% of U.S. towns.
Heating and cooling a home in Silverton
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Silverton, 100% of that work is heating and 0% 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 Silverton 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 Silverton averaged 2.3° warmer than the 1900s. The biggest change is in March (+3.4°). The shift is larger than in 99% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Silverton’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. November swings the most: between 1991 and 2020 its average temperature ranged from 20° to 35°. August is the most reliable, staying within 6°.
Common questions about Silverton’s climate
What is the coldest month in Silverton?
January, with a typical high of 34° and a low of 2°.
What is the hottest month in Silverton?
July, with a typical high of 70° and a low of 40°.
When is the first frost in Silverton?
In half of years the first 32° night comes by September 17, and the last spring frost by June 8.
What is the rainiest month in Silverton?
August, with 2.8 inches of rain and melted snow. The year totals 27 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Silverton itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Lake City, CO (24 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.