Lafayette, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lafayette, a city in Boulder County, Colorado.
Tonight
34°F
Mostly Clear
Mostly clear, with a low around 34. South southwest wind around 3 mph.
7-day forecast for Lafayette
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 34°F | Mostly Clear | 3 mph SSW | 0% |
| Wednesday | 55°F | Mostly Sunny | 1 to 5 mph N | 10% |
| Wednesday Night | 35°F | Mostly Cloudy | 3 mph WNW | 9% |
| Thursday | 58°F | Sunny | 1 to 5 mph SSE | 0% |
| Thursday Night | 35°F | Partly Cloudy | 2 mph SW | 1% |
| Friday | 57°F | Mostly Sunny | 2 to 6 mph NE | 9% |
| Friday Night | 35°F | Partly Cloudy | 5 mph SW | 9% |
| Saturday | 59°F | Sunny | 2 to 6 mph S | 1% |
| Saturday Night | 34°F | Mostly Clear | 3 mph WSW | 0% |
| Sunday | 67°F | Sunny | 5 mph SSW | 0% |
| Sunday Night | 40°F | Mostly Clear | 3 to 7 mph WSW | 0% |
| Monday | 66°F | Sunny | 2 to 6 mph ESE | 0% |
| Monday Night | 40°F | Partly Cloudy | 3 mph WNW | 0% |
| Tuesday | 64°F | Mostly Sunny | 3 mph ESE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Lafayette (39.995, -105.100). Updated through the day.
Growing snapshot for Lafayette
Last spring frost
May 6
First fall frost
Oct 5
Growing season
151 days
Hardiness zone
6a
More local growing data for Lafayette: 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
Lazy Acres
Leyner
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 Lafayette). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.