Grand Lake, CO Weather & Growing Conditions
This Afternoon
61°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. High near 61, with temperatures falling to around 55 in the afternoon. Southwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 61°F | Showers And Thunderstorms Likely | 5 mph SW | 58% |
| Tonight | 35°F | Slight Chance Showers And Thunderstorms | 5 mph S | 24% |
| Saturday | 58°F | Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 9 mph SW | 61% |
| Saturday Night | 30°F | Chance Showers And Thunderstorms | 2 to 10 mph SSW | 34% |
| Sunday | 53°F | Chance Rain Showers then Partly Sunny | 2 to 13 mph WSW | 38% |
| Sunday Night | 28°F | Mostly Clear | 1 to 9 mph W | 2% |
| Monday | 58°F | Sunny | 1 to 10 mph W | 1% |
| Monday Night | 30°F | Partly Cloudy | 1 to 6 mph NNW | 1% |
| Tuesday | 61°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 7 mph SW | 22% |
| Tuesday Night | 32°F | Slight Chance Rain Showers then Mostly Cloudy | 1 to 5 mph SSW | 23% |
| Wednesday | 59°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 8 mph WSW | 26% |
| Wednesday Night | 32°F | Mostly Cloudy | 1 to 5 mph NW | 12% |
| Thursday | 61°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 6 mph SSW | 19% |
| Thursday Night | 33°F | Slight Chance Rain Showers then Mostly Cloudy | 1 to 5 mph SSE | 18% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Grand Lake, CO
Growing season
54 days
Hardiness zone
5a
Explore more for Grand Lake, CO: full frost dates · planting calendar · Colorado frost dates
Climate data from the nearest NOAA station, Grand Lake 1 Nw, Co (2.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.