Leyner, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Leyner, a community in Boulder County, Colorado.
Today
56°F
Partly Sunny
Partly sunny. High near 56, with temperatures falling to around 53 in the afternoon. Northeast wind around 5 mph.
7-day forecast for Leyner
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 56°F | Partly Sunny | 5 mph NE | 11% |
| Tonight | 36°F | Mostly Cloudy | 1 to 5 mph NW | 11% |
| Thursday | 59°F | Sunny | 1 to 5 mph SSE | 0% |
| Thursday Night | 36°F | Partly Cloudy | 2 mph WSW | 1% |
| Friday | 57°F | Mostly Sunny | 0 to 5 mph NNE | 11% |
| Friday Night | 34°F | Mostly Clear | 3 mph WNW | 11% |
| Saturday | 60°F | Sunny | 1 to 5 mph SE | 1% |
| Saturday Night | 34°F | Mostly Clear | 2 mph SW | 0% |
| Sunday | 65°F | Sunny | 1 to 5 mph S | 0% |
| Sunday Night | 38°F | Mostly Clear | 2 to 6 mph WSW | 0% |
| Monday | 66°F | Sunny | 3 mph E | 0% |
| Monday Night | 38°F | Partly Cloudy | 1 mph WNW | 0% |
| Tuesday | 64°F | Mostly Sunny | 2 mph NE | 0% |
| Tuesday Night | 39°F | Partly Cloudy | 2 mph W | 2% |
Forecast source: National Weather Service (api.weather.gov) for Leyner (40.051, -105.107). Updated through the day.
Growing snapshot for Leyner
Last spring frost
May 6
First fall frost
Oct 5
Growing season
151 days
Hardiness zone
6a
More local growing data for Leyner: nearby ZIP 80026 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
Longmont
Louisville
Lyons
Mountain Meadows
Nederland
Niwot
Paragon Estates
Pine Brook Hill
Seven Hills
St. Ann Highlands
Sugarloaf
Sunshine
Superior
Tall Timber
Valmont
Climate data from the nearest NOAA station, Boulder, Co (8.9 mi from Leyner). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.