Westminster, CO Weather & Growing Conditions
Today
78°F
Patchy Smoke
Patchy smoke and a slight chance of rain showers before noon, then patchy smoke and a slight chance of showers and thunderstorms. Mostly sunny. High near 78, with temperatures falling to around 76 in the afternoon. Northeast wind 6 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Patchy Smoke | 6 to 10 mph NE | 16% |
| Tonight | 57°F | Patchy Smoke | 6 to 9 mph NNE | 11% |
| Wednesday | 86°F | Patchy Smoke | 5 to 9 mph NE | 0% |
| Wednesday Night | 60°F | Mostly Clear | 5 to 9 mph N | 2% |
| Thursday | 94°F | Sunny | 3 to 10 mph NNW | 0% |
| Thursday Night | 63°F | Mostly Clear | 9 mph SW | 2% |
| Friday | 97°F | Sunny | 5 to 12 mph S | 0% |
| Friday Night | 66°F | Mostly Clear | 9 mph S | 0% |
| Saturday | 98°F | Sunny | 5 to 9 mph N | 2% |
| Saturday Night | 66°F | Partly Cloudy | 6 to 9 mph W | 0% |
| Sunday | 97°F | Sunny | 5 to 9 mph NNE | 8% |
| Sunday Night | 68°F | Partly Cloudy | 6 to 9 mph W | 3% |
| Monday | 96°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 12 mph N | 22% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 6 to 12 mph WNW | 16% |
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 Aug 4, 2026.