Larkspur, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Larkspur, a town in Douglas County, Colorado.
Today
78°F
Patchy Smoke
Patchy smoke before noon, then patchy smoke and a chance of showers and thunderstorms. Mostly sunny. High near 78, with temperatures falling to around 70 in the afternoon. East wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Larkspur
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Patchy Smoke | 6 to 13 mph E | 40% |
| Tonight | 54°F | Patchy Smoke then Partly Cloudy | 8 to 14 mph S | 15% |
| Wednesday | 84°F | Sunny | 3 to 10 mph NE | 4% |
| Wednesday Night | 56°F | Mostly Clear | 9 to 13 mph S | 9% |
| Thursday | 91°F | Sunny | 5 to 9 mph NNW | 4% |
| Thursday Night | 57°F | Mostly Clear | 5 to 9 mph S | 6% |
| Friday | 93°F | Sunny | 3 to 9 mph NNE | 0% |
| Friday Night | 60°F | Mostly Clear | 9 to 14 mph S | 1% |
| Saturday | 94°F | Sunny | 6 to 9 mph NW | 2% |
| Saturday Night | 62°F | Partly Cloudy | 6 to 10 mph S | 1% |
| Sunday | 94°F | Sunny | 3 to 7 mph N | 11% |
| Sunday Night | 63°F | Partly Cloudy | 8 mph SSW | 5% |
| Monday | 92°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 9 mph WNW | 19% |
| Monday Night | 61°F | Partly Cloudy | 3 to 8 mph SW | 11% |
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
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Roxborough Park
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Sterling Ranch
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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 Aug 4, 2026.