Westminster, CO Weather & Growing Conditions
Overnight
61°F
Patchy Smoke
Patchy smoke. Mostly cloudy. Low around 61, with temperatures rising to around 64 overnight. North northeast wind around 12 mph, with gusts as high as 18 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 61°F | Patchy Smoke | 12 mph NNE | 12% |
| Tuesday | 79°F | Patchy Smoke | 6 to 10 mph ENE | 15% |
| Tuesday Night | 58°F | Patchy Smoke | 5 to 9 mph NNE | 11% |
| Wednesday | 86°F | Patchy Smoke | 5 to 9 mph NNE | 0% |
| Wednesday Night | 61°F | Mostly Clear | 3 to 9 mph SSW | 2% |
| Thursday | 95°F | Sunny | 2 to 8 mph N | 0% |
| Thursday Night | 64°F | Mostly Clear | 5 to 8 mph SSW | 2% |
| Friday | 97°F | Sunny | 3 to 8 mph SSE | 0% |
| Friday Night | 68°F | Mostly Clear | 9 mph S | 0% |
| Saturday | 99°F | Sunny | 3 to 8 mph N | 1% |
| Saturday Night | 68°F | Partly Cloudy | 5 to 8 mph W | 0% |
| Sunday | 98°F | Sunny | 3 to 8 mph E | 7% |
| Sunday Night | 69°F | Partly Cloudy | 5 to 9 mph WNW | 4% |
| Monday | 97°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 12 mph N | 17% |
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 (1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.