Silverthorne, Colorado Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Silverthorne weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——80°52°—
- MondayJul 6Overcast——81°56°+1°
- TuesdayJul 7Overcast75%—83°48°+2°
- WednesdayJul 8Light Drizzle46%—82°49°-1°
- ThursdayJul 9Light Drizzle46%—78°48°-4°
- FridayJul 10Overcast20%—82°46°+4°
- SaturdayJul 11Clear——86°48°+4°
AQI 44 (Good), driven by PM2.5. AQI down 31 over the last 6 hours — air quality is improving sharply. PM2.5 at 8.1 µg/m³, PM10 at 9.7 µg/m³ — typical background levels with no transport signature.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 4 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 43. Overcast through the UV peak window (cloud cover ~86%) — afternoon ozone should stay flat.
- Present
- AQI 43
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 10
PM × Wind × Precip
PM2.5 at 8.1 µg/m³, PM10 at 9.7 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.84
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:23 PM
- Moonset
- 11:19 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Silverthorne at a glance
- Today vs. normal: 18°F below the seasonal normal for this latitude
- Last frost: April 14 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 80498
15-Day Forecast — Silverthorne
- Sun80°52°4%
- Mon81°56°5%
- Tue83°48°75%
- Wed82°49°46%
- Thu78°48°46%
- Fri82°46°20%
- Sat86°48°5%
- Sun92°49°7%
- Mon88°50°18%
- Tue95°54°31%
- Wed87°51°42%
- Thu87°53°63%
- Fri87°51°61%
- Sat90°52°59%
- Sun84°52°73%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Silverthorne
SPC includes Silverthorne in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Silverthorne
- 80498