Glendale, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glendale, a community in Boulder County, Colorado.
This Afternoon
48°F
Sunny
Sunny. High near 48, with temperatures falling to around 41 in the afternoon. East wind around 3 mph.
7-day forecast for Glendale
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 48°F | Sunny | 3 mph E | 0% |
| Tonight | 34°F | Mostly Clear | 3 mph S | 0% |
| Wednesday | 47°F | Mostly Sunny then Slight Chance Rain And Snow Showers | 0 to 6 mph ENE | 18% |
| Wednesday Night | 33°F | Slight Chance Rain And Snow Showers then Mostly Cloudy | 3 mph NW | 18% |
| Thursday | 51°F | Sunny | 0 to 7 mph SSE | 0% |
| Thursday Night | 36°F | Partly Cloudy | 3 mph WSW | 1% |
| Friday | 50°F | Mostly Sunny then Slight Chance Rain And Snow Showers | 0 to 5 mph SW | 16% |
| Friday Night | 34°F | Slight Chance Rain And Snow Showers then Partly Cloudy | 2 to 8 mph WNW | 16% |
| Saturday | 53°F | Sunny | 0 to 10 mph NE | 2% |
| Saturday Night | 35°F | Clear | 1 to 7 mph WNW | 1% |
| Sunday | 61°F | Sunny | 1 to 10 mph W | 0% |
| Sunday Night | 44°F | Mostly Clear | 6 to 13 mph W | 0% |
| Monday | 60°F | Mostly Sunny | 1 to 12 mph NNW | 0% |
| Monday Night | 42°F | Partly Cloudy | 1 to 7 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Glendale (40.087, -105.372). Updated through the day.
Growing snapshot for Glendale
Last spring frost
Jun 21
First fall frost
Sep 2
Growing season
71 days
Hardiness zone
5b
More local growing data for Glendale: nearby ZIP 80455 weather · frost dates · planting calendar · Colorado frost dates
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Climate data from the nearest NOAA station, Boulder 14 W, Co (8.6 mi from Glendale). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.