Silverthorne, CO climate
Silverthorne has cold, snowy winters and cool summers, with very little rain. A typical July afternoon reaches 75°, a January night drops to 6°, and about 116 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Silverthorne feels like
Winter
Spring
Summer
Fall
Silverthorne 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 | 31° | 6° | 1.9" | 18.0" | 12 | 30 | 13° – 24° |
| February | 34° | 7° | 1.9" | 17.0" | 11 | 27 | 16° – 28° |
| March | 42° | 14° | 2.1" | 17.5" | 11 | 20 | 22° – 34° |
| April | 48° | 21° | 2.6" | 17.3" | 11 | 10 | 30° – 39° |
| May | 58° | 29° | 2.0" | 6.4" | 10 | 3 | 39° – 47° |
| June | 69° | 36° | 1.3" | 0.7" | 8 | 0 | 49° – 57° |
| July | 75° | 41° | 1.8" | 0 | 12 | 0 | 54° – 61° |
| August | 72° | 39° | 1.8" | 0 | 14 | 0 | 53° – 59° |
| September | 65° | 33° | 1.6" | 1.1" | 10 | 1 | 44° – 53° |
| October | 53° | 24° | 1.6" | 7.1" | 8 | 5 | 32° – 43° |
| November | 40° | 15° | 1.8" | 14.6" | 10 | 15 | 18° – 34° |
| December | 31° | 6° | 1.8" | 15.8" | 11 | 26 | 14° – 23° |
| Year | 51° | 23° | 22.2" | 115.5" | 127 | 136 |
“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 Silverthorne
Silverthorne gets 22 inches of rain and melted snow a year. April is the wettest month and June the driest. Rain or snow falls on about 127 days a year. Snow covers the ground about 136 days of the year.
A year-round growing season
Heating and cooling a home in Silverthorne
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Silverthorne, 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 Silverthorne 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 Silverthorne averaged 1.2° warmer than the 1900s. The biggest change is in March (+3.1°). The shift is larger than in 52% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Silverthorne’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 18° to 34°. August is the most reliable, staying within 6°.
Common questions about Silverthorne’s climate
What is the coldest month in Silverthorne?
January, with a typical high of 31° and a low of 6°.
What is the hottest month in Silverthorne?
July, with a typical high of 75° and a low of 41°.
How much snow does Silverthorne get?
About 116 inches in a normal winter, most of it in January.
When is the first frost in Silverthorne?
Frost is uncommon. Only 100% of years see a night at 32° or below.
What is the rainiest month in Silverthorne?
April, with 2.6 inches of rain and melted snow. The year totals 22 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Silverthorne itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Dillon 1 E, CO (4 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.