Silverthorne, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Silverthorne, a town in Summit County, Colorado.
This Afternoon
68°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 3pm, then showers and thunderstorms likely between 3pm and 4pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 68, with temperatures falling to around 61 in the afternoon. West southwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Silverthorne
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Chance Showers And Thunderstorms | 5 mph WSW | 64% |
| Tonight | 38°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 mph SSE | 31% |
| Saturday | 69°F | Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 7 mph SW | 41% |
| Saturday Night | 34°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 6 mph S | 15% |
| Sunday | 67°F | Mostly Sunny | 3 to 10 mph WSW | 11% |
| Sunday Night | 32°F | Mostly Clear | 2 to 8 mph SW | 0% |
| Monday | 71°F | Sunny | 2 to 7 mph WSW | 0% |
| Monday Night | 35°F | Mostly Clear | 6 mph S | 0% |
| Tuesday | 72°F | Mostly Sunny then Chance Showers And Thunderstorms | 6 mph SW | 47% |
| Tuesday Night | 36°F | Chance Showers And Thunderstorms then Mostly Cloudy | 6 mph S | 25% |
| Wednesday | 70°F | Partly Sunny then Chance Showers And Thunderstorms | 5 mph SW | 36% |
| Wednesday Night | 36°F | Slight Chance Rain Showers then Mostly Cloudy | 3 mph SSW | 21% |
| Thursday | 72°F | Partly Sunny then Chance Showers And Thunderstorms | 5 mph S | 29% |
| Thursday Night | 37°F | Slight Chance Rain Showers then Mostly Cloudy | 6 mph SE | 24% |
Forecast source: National Weather Service (api.weather.gov) for Silverthorne (39.660, -106.089). Updated through the day.
Growing snapshot for Silverthorne
Growing season
41 days
Hardiness zone
5a
More local growing data for Silverthorne: nearby ZIP 80435 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Dillon 1 E, Co (6.5 mi from Silverthorne). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.