Bow Mar, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bow Mar, a town in Jefferson County, Colorado.
Overnight
34°F
Partly Cloudy
Partly cloudy. Low around 34, with temperatures rising to around 36 overnight. South southwest wind around 3 mph.
7-day forecast for Bow Mar
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 34°F | Partly Cloudy | 3 mph SSW | 0% |
| Wednesday | 56°F | Partly Sunny then Chance Rain Showers | 2 to 8 mph ESE | 30% |
| Wednesday Night | 35°F | Chance Rain Showers then Mostly Cloudy | 1 to 7 mph NW | 30% |
| Thursday | 58°F | Sunny | 5 mph SSE | 0% |
| Thursday Night | 35°F | Partly Cloudy | 3 mph SSW | 0% |
| Friday | 57°F | Mostly Sunny | 5 mph N | 11% |
| Friday Night | 33°F | Mostly Clear | 5 mph W | 11% |
| Saturday | 59°F | Sunny | 2 to 6 mph E | 2% |
| Saturday Night | 33°F | Mostly Clear | 5 mph S | 0% |
| Sunday | 66°F | Sunny | 2 to 7 mph SSE | 0% |
| Sunday Night | 37°F | Mostly Clear | 3 to 7 mph SW | 0% |
| Monday | 66°F | Sunny | 2 to 6 mph ENE | 0% |
| Monday Night | 37°F | Partly Cloudy | 3 mph W | 0% |
| Tuesday | 65°F | Mostly Sunny | 3 mph ENE | 0% |
Forecast source: National Weather Service (api.weather.gov) for Bow Mar (39.627, -105.051). Updated through the day.
Growing snapshot for Bow Mar
Last spring frost
May 2
First fall frost
Oct 11
Growing season
160 days
Hardiness zone
6a
More local growing data for Bow Mar: nearby ZIP 80123 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
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Golden
Idledale
Indian Hills
Ken Caryl
Kittredge
Lakewood
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West Pleasant View
Wheat Ridge
Climate data from the nearest NOAA station, Marston Fltr Plt, Co (0.4 mi from Bow Mar). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.