Milliken, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Milliken, a town in Weld County, Colorado.
Today
74°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny, with a high near 74. Northeast wind 3 to 7 mph. Chance of precipitation is 30%.
7-day forecast for Milliken
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Chance Showers And Thunderstorms | 3 to 7 mph NE | 30% |
| Tonight | 47°F | Slight Chance Rain Showers then Partly Cloudy | 1 to 8 mph N | 13% |
| Monday | 74°F | Mostly Sunny then Slight Chance Rain Showers | 1 to 8 mph ENE | 23% |
| Monday Night | 49°F | Slight Chance Rain Showers then Partly Cloudy | 3 to 9 mph ENE | 20% |
| Tuesday | 79°F | Mostly Sunny | 2 to 7 mph NE | 3% |
| Tuesday Night | 51°F | Mostly Cloudy | 5 to 8 mph E | 9% |
| Wednesday | 79°F | Mostly Cloudy | 6 mph NE | 8% |
| Wednesday Night | 50°F | Mostly Cloudy | 5 mph NW | 10% |
| Thursday | 82°F | Mostly Sunny | 2 to 8 mph NNE | 2% |
| Thursday Night | 51°F | Partly Cloudy | 2 to 8 mph ENE | 8% |
| Friday | 81°F | Mostly Sunny | 2 to 9 mph NE | 5% |
| Friday Night | 52°F | Partly Cloudy | 3 to 10 mph E | 8% |
| Saturday | 84°F | Sunny | 2 to 7 mph S | 6% |
| Saturday Night | 53°F | Partly Cloudy | 3 to 7 mph NNE | 8% |
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 Sep 20, 2026.