Superior, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Superior, a town in Boulder County, Colorado.
Tonight
53°F
Partly Cloudy
Partly cloudy, with a low around 53. West wind around 3 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Superior
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Partly Cloudy | 3 mph W | 5% |
| Saturday | 74°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 7 mph NNW | 66% |
| Saturday Night | 48°F | Chance Showers And Thunderstorms | 2 to 6 mph W | 52% |
| Sunday | 70°F | Chance Showers And Thunderstorms | 2 to 6 mph NNE | 54% |
| Sunday Night | 48°F | Chance Showers And Thunderstorms then Partly Cloudy | 1 to 5 mph WNW | 34% |
| Monday | 71°F | Sunny | 1 to 6 mph NE | 3% |
| Monday Night | 50°F | Mostly Clear | 1 to 5 mph NNW | 9% |
| Tuesday | 75°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 5 mph NNE | 17% |
| Tuesday Night | 52°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 1 to 5 mph WNW | 19% |
| Wednesday | 76°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 1 to 6 mph NNE | 17% |
| Wednesday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 3 mph SW | 19% |
| Thursday | 76°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 6 mph NNE | 15% |
| Thursday Night | 53°F | Chance Rain Showers then Mostly Cloudy | 1 to 5 mph SSW | 29% |
| Friday | 77°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 6 mph NE | 18% |
Forecast source: National Weather Service (api.weather.gov) for Superior (39.931, -105.159). Updated through the day.
Growing snapshot for Superior
Last spring frost
May 6
First fall frost
Oct 5
Growing season
151 days
Hardiness zone
6a
More local growing data for Superior: nearby ZIP 80027 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Allenspark
Altona
Bark Ranch
Bonanza Mountain Estates
Boulder
Coal Creek
Crisman
Eldorado Springs
Glendale
Gold Hill
Gunbarrel
Hidden Lake
Jamestown
Lafayette
Lazy Acres
Leyner
Longmont
Louisville
Lyons
Mountain Meadows
Nederland
Niwot
Paragon Estates
Pine Brook Hill
Seven Hills
St. Ann Highlands
Sugarloaf
Sunshine
Tall Timber
Valmont
Climate data from the nearest NOAA station, Boulder, Co (6.4 mi from Superior). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.