Larkspur, CO Weather & Growing Conditions
Overnight
46°F
Mostly Clear
Mostly clear. Low around 46, with temperatures rising to around 48 overnight. South southwest wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Mostly Clear | 3 mph SSW | 7% |
| Sunday | 68°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 9 mph NNW | 18% |
| Sunday Night | 46°F | Chance Showers And Thunderstorms | 1 to 7 mph WNW | 43% |
| Monday | 69°F | Mostly Sunny | 1 to 13 mph SSE | 6% |
| Monday Night | 48°F | Slight Chance Showers And Thunderstorms | 12 to 15 mph SSE | 22% |
| Tuesday | 73°F | Mostly Sunny then Chance Showers And Thunderstorms | 7 to 16 mph S | 26% |
| Tuesday Night | 49°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 9 to 13 mph S | 22% |
| Wednesday | 73°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 5 to 12 mph S | 15% |
| Wednesday Night | 50°F | Slight Chance Rain Showers then Mostly Cloudy | 2 to 6 mph SSW | 16% |
| Thursday | 73°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 8 mph ENE | 15% |
| Thursday Night | 51°F | Chance Showers And Thunderstorms | 8 mph S | 26% |
| Friday | 71°F | Partly Sunny then Chance Showers And Thunderstorms | 6 to 13 mph S | 35% |
| Friday Night | 50°F | Chance Showers And Thunderstorms | 7 to 12 mph S | 36% |
| Saturday | 74°F | Mostly Sunny then Chance Showers And Thunderstorms | 7 mph SSW | 27% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Larkspur, CO
Last spring frost
May 14
First fall frost
Oct 1
Growing season
138 days
Hardiness zone
5b
Explore more for Larkspur, CO: full frost dates · planting calendar · Colorado frost dates
Climate data from the nearest NOAA station, Monument, Co (6.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.