Larkspur, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Larkspur, a town in Douglas County, Colorado.
Tonight
50°F
Partly Cloudy
Partly cloudy, with a low around 50. West southwest wind around 3 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Larkspur
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Partly Cloudy | 3 mph WSW | 10% |
| Saturday | 74°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 7 mph SSW | 57% |
| Saturday Night | 47°F | Chance Showers And Thunderstorms then Partly Cloudy | 1 to 5 mph WNW | 43% |
| Sunday | 68°F | Mostly Sunny then Showers And Thunderstorms Likely | 1 to 6 mph N | 58% |
| Sunday Night | 46°F | Chance Showers And Thunderstorms then Partly Cloudy | 1 to 6 mph SE | 40% |
| Monday | 70°F | Mostly Sunny | 2 to 9 mph S | 8% |
| Monday Night | 49°F | Chance Showers And Thunderstorms then Partly Cloudy | 10 mph SSE | 28% |
| Tuesday | 73°F | Mostly Sunny then Chance Showers And Thunderstorms | 7 to 10 mph S | 27% |
| Tuesday Night | 50°F | Chance Showers And Thunderstorms then Mostly Cloudy | 7 to 12 mph S | 32% |
| Wednesday | 72°F | Partly Sunny then Chance Showers And Thunderstorms | 7 mph S | 29% |
| Wednesday Night | 50°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 1 to 6 mph SSW | 21% |
| Thursday | 71°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 1 to 7 mph N | 23% |
| Thursday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 7 mph S | 26% |
| Friday | 73°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 22% |
Forecast source: National Weather Service (api.weather.gov) for Larkspur (39.230, -104.886). Updated through the day.
Growing snapshot for Larkspur
Last spring frost
May 14
First fall frost
Oct 1
Growing season
138 days
Hardiness zone
5b
More local growing data for Larkspur: nearby ZIP 80118 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Acres Green
Castle Pines
Castle Pines Village
Castle Rock
Franktown
Highlands Ranch
Lone Tree
Louviers
Parker
Perry Park
Roxborough Park
Sedalia
Sierra Ridge
Stepping Stone
Sterling Ranch
Stonegate
The Pinery
Westcreek
Climate data from the nearest NOAA station, Monument, Co (6.1 mi from Larkspur). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.