Larkspur, CO Weather & Growing Conditions
Today
77°F
Patchy Smoke
Patchy smoke before noon, then patchy smoke and a chance of showers and thunderstorms. Mostly sunny. High near 77, with temperatures falling to around 70 in the afternoon. East northeast wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Patchy Smoke | 6 to 14 mph ENE | 45% |
| Tonight | 54°F | Patchy Smoke then Partly Cloudy | 10 to 16 mph S | 15% |
| Wednesday | 82°F | Sunny | 5 to 10 mph NE | 5% |
| Wednesday Night | 55°F | Mostly Clear | 9 to 14 mph S | 10% |
| Thursday | 88°F | Sunny | 5 to 10 mph NNW | 4% |
| Thursday Night | 57°F | Mostly Clear | 5 to 9 mph S | 6% |
| Friday | 90°F | Sunny | 5 to 9 mph NNE | 1% |
| Friday Night | 60°F | Mostly Clear | 9 to 15 mph S | 1% |
| Saturday | 92°F | Sunny | 6 to 10 mph NW | 2% |
| Saturday Night | 62°F | Partly Cloudy | 7 to 12 mph SSW | 1% |
| Sunday | 92°F | Sunny | 3 to 7 mph NE | 12% |
| Sunday Night | 62°F | Partly Cloudy | 6 to 9 mph SSW | 5% |
| Monday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 9 mph WNW | 21% |
| Monday Night | 61°F | Mostly Cloudy | 7 mph SW | 12% |
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 Aug 4, 2026.