Westminster, CO Weather & Growing Conditions
Today
55°F
Partly Sunny then Slight Chance Rain Showers
A slight chance of rain showers after 5pm. Partly sunny. High near 55, with temperatures falling to around 51 in the afternoon. North northeast wind 2 to 7 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 55°F | Partly Sunny then Slight Chance Rain Showers | 2 to 7 mph NNE | 15% |
| Tonight | 36°F | Slight Chance Rain Showers then Mostly Cloudy | 2 to 7 mph NW | 15% |
| Thursday | 58°F | Sunny | 0 to 8 mph SSE | 0% |
| Thursday Night | 38°F | Partly Cloudy | 0 to 3 mph WSW | 1% |
| Friday | 56°F | Mostly Sunny | 2 to 7 mph NNE | 12% |
| Friday Night | 36°F | Mostly Clear | 7 mph WNW | 12% |
| Saturday | 58°F | Sunny | 1 to 9 mph ESE | 1% |
| Saturday Night | 36°F | Mostly Clear | 5 mph SW | 0% |
| Sunday | 65°F | Sunny | 1 to 8 mph S | 0% |
| Sunday Night | 41°F | Mostly Clear | 3 to 9 mph WSW | 0% |
| Monday | 65°F | Sunny | 2 to 7 mph NE | 0% |
| Monday Night | 40°F | Partly Cloudy | 3 mph WNW | 0% |
| Tuesday | 64°F | Mostly Sunny | 3 mph NNE | 0% |
| Tuesday Night | 41°F | Partly Cloudy | 5 mph W | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Westminster, CO
Last spring frost
May 2
First fall frost
Oct 11
Growing season
160 days
Hardiness zone
6a
Explore more for Westminster, CO: full frost dates · planting calendar · Colorado frost dates
Climate data from the nearest NOAA station, Northglenn, Co (5.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.