Idaho Springs, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Idaho Springs, a city in Gilpin County, Colorado.
Today
74°F
Patchy Smoke
Patchy smoke before noon, then patchy smoke and a chance of showers and thunderstorms. Mostly sunny. High near 74, with temperatures falling to around 68 in the afternoon. East wind 3 to 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Idaho Springs
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Patchy Smoke | 3 to 8 mph E | 34% |
| Tonight | 50°F | Patchy Smoke | 2 to 8 mph S | 17% |
| Wednesday | 83°F | Sunny | 6 to 9 mph NNW | 0% |
| Wednesday Night | 49°F | Mostly Clear | 3 to 8 mph SW | 1% |
| Thursday | 87°F | Sunny | 5 to 10 mph NW | 3% |
| Thursday Night | 52°F | Clear | 5 to 9 mph WNW | 1% |
| Friday | 89°F | Sunny | 5 to 10 mph N | 1% |
| Friday Night | 56°F | Mostly Clear | 5 to 10 mph SSW | 0% |
| Saturday | 90°F | Sunny | 9 mph NW | 6% |
| Saturday Night | 56°F | Partly Cloudy | 8 mph WNW | 2% |
| Sunday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 8 mph NNW | 19% |
| Sunday Night | 58°F | Partly Cloudy | 8 mph WNW | 8% |
| Monday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 9 mph N | 54% |
| Monday Night | 55°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 6 to 9 mph W | 24% |
Forecast source: National Weather Service (api.weather.gov) for Idaho Springs (39.749, -105.504). Updated through the day.
Growing snapshot for Idaho Springs
Last spring frost
Jun 5
First fall frost
Sep 16
Growing season
103 days
Hardiness zone
5b
More local growing data for Idaho Springs: nearby ZIP 80427 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Coal Creek Canyon, Co (10.2 mi from Idaho Springs). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.