Glendale, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glendale, a community in Boulder County, Colorado.
This Afternoon
73°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. High near 73, with temperatures falling to around 60 in the afternoon. South southwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Glendale
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Showers And Thunderstorms Likely | 5 mph SSW | 56% |
| Tonight | 51°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 mph W | 29% |
| Saturday | 66°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 5 mph SSW | 70% |
| Saturday Night | 49°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 2 mph WNW | 42% |
| Sunday | 62°F | Chance Showers And Thunderstorms | 3 mph NNE | 37% |
| Sunday Night | 48°F | Chance Rain Showers then Partly Cloudy | 2 mph NNW | 29% |
| Monday | 63°F | Sunny | 0 to 7 mph ESE | 5% |
| Monday Night | 50°F | Mostly Clear | 2 mph W | 7% |
| Tuesday | 67°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 3 mph SSW | 35% |
| Tuesday Night | 52°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 mph S | 22% |
| Wednesday | 67°F | Partly Sunny then Chance Showers And Thunderstorms | 3 mph NE | 36% |
| Wednesday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 2 mph S | 20% |
| Thursday | 67°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 5 mph SE | 23% |
| Thursday Night | 53°F | Chance Rain Showers then Mostly Cloudy | 1 mph SSW | 26% |
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 Sep 19, 2026.