Milliken, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Milliken, a town in Weld County, Colorado.
This Afternoon
55°F
Partly Sunny
Partly sunny. High near 55, with temperatures falling to around 52 in the afternoon. East northeast wind around 5 mph.
7-day forecast for Milliken
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 55°F | Partly Sunny | 5 mph ENE | 4% |
| Tonight | 35°F | Mostly Cloudy | 5 mph NNW | 4% |
| Thursday | 59°F | Sunny | 1 to 5 mph SSW | 0% |
| Thursday Night | 34°F | Mostly Cloudy | 3 mph WSW | 0% |
| Friday | 57°F | Mostly Sunny | 1 to 5 mph N | 5% |
| Friday Night | 33°F | Mostly Clear | 3 mph WNW | 5% |
| Saturday | 60°F | Sunny | 3 mph ESE | 0% |
| Saturday Night | 33°F | Mostly Clear | 2 mph WNW | 0% |
| Sunday | 64°F | Sunny | 0 to 3 mph S | 0% |
| Sunday Night | 35°F | Mostly Clear | 0 to 3 mph WSW | 0% |
| Monday | 65°F | Sunny | 1 to 5 mph SE | 0% |
| Monday Night | 36°F | Partly Cloudy | 2 mph N | 0% |
| Tuesday | 63°F | Mostly Sunny | 2 mph SE | 1% |
| Tuesday Night | 37°F | Partly Cloudy | 2 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Milliken (40.311, -104.858). Updated through the day.
Growing snapshot for Milliken
Last spring frost
May 2
First fall frost
Oct 8
Growing season
159 days
Hardiness zone
5b
More local growing data for Milliken: nearby ZIP 80543 weather · frost dates · planting calendar · Colorado frost dates
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Climate data from the nearest NOAA station, Greeley Unc, Co (9.1 mi from Milliken). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.