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
54°F
Partly Cloudy
Partly cloudy, with a low around 54. West southwest wind around 3 mph.
7-day forecast for Bow Mar
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Partly Cloudy | 3 mph WSW | 4% |
| Saturday | 77°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 8 mph ENE | 64% |
| Saturday Night | 51°F | Chance Showers And Thunderstorms then Partly Cloudy | 1 to 6 mph WNW | 47% |
| Sunday | 71°F | Showers And Thunderstorms Likely | 2 to 7 mph ENE | 57% |
| Sunday Night | 49°F | Chance Showers And Thunderstorms then Partly Cloudy | 1 to 7 mph SSE | 31% |
| Monday | 73°F | Sunny | 1 to 7 mph E | 3% |
| Monday Night | 50°F | Partly Cloudy | 1 to 7 mph S | 13% |
| Tuesday | 77°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 6 mph E | 18% |
| Tuesday Night | 52°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 1 to 6 mph S | 21% |
| Wednesday | 77°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 1 to 7 mph ESE | 17% |
| Wednesday Night | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph SSW | 18% |
| Thursday | 78°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 6 mph NNW | 16% |
| Thursday Night | 54°F | Chance Rain Showers then Mostly Cloudy | 2 to 6 mph SSW | 28% |
| Friday | 80°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 7 mph SSE | 17% |
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
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Ken Caryl
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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 Sep 19, 2026.