Frederick, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Frederick, a town in Weld County, Colorado.
Tonight
54°F
Partly Cloudy
Partly cloudy, with a low around 54. West southwest wind around 3 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Frederick
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Partly Cloudy | 3 mph WSW | 7% |
| Saturday | 77°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 7 mph ESE | 70% |
| Saturday Night | 51°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 2 to 6 mph WNW | 56% |
| Sunday | 72°F | Showers And Thunderstorms Likely | 2 to 6 mph ENE | 55% |
| Sunday Night | 48°F | Chance Rain Showers then Partly Cloudy | 0 to 6 mph ESE | 33% |
| Monday | 73°F | Mostly Sunny | 0 to 6 mph ESE | 2% |
| Monday Night | 50°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 6 mph NNE | 16% |
| Tuesday | 77°F | Mostly Sunny | 5 mph NNE | 9% |
| Tuesday Night | 52°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SW | 22% |
| Wednesday | 79°F | Partly Sunny | 6 mph NE | 9% |
| Wednesday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph WSW | 17% |
| Thursday | 78°F | Mostly Sunny | 2 to 6 mph NNE | 10% |
| Thursday Night | 53°F | Chance Rain Showers then Mostly Cloudy | 5 mph S | 25% |
| Friday | 80°F | Mostly Sunny | 2 to 6 mph ENE | 14% |
Forecast source: National Weather Service (api.weather.gov) for Frederick (40.106, -104.974). Updated through the day.
Growing snapshot for Frederick
Last spring frost
May 7
First fall frost
Oct 5
Growing season
151 days
Hardiness zone
5b
More local growing data for Frederick: nearby ZIP 80514 weather · frost dates · planting calendar · Colorado frost dates
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Climate data from the nearest NOAA station, Longmont 2 Ese, Co (9.4 mi from Frederick). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.