Pierce, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pierce, a town in Weld County, Colorado.
This Afternoon
82°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 3pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 82, with temperatures falling to around 75 in the afternoon. South southwest wind around 8 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Pierce
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 82°F | Chance Showers And Thunderstorms | 8 mph SSW | 42% |
| Tonight | 52°F | Chance Showers And Thunderstorms then Mostly Cloudy | 3 to 9 mph NNW | 39% |
| Saturday | 74°F | Partly Sunny then Chance Showers And Thunderstorms | 3 to 10 mph S | 72% |
| Saturday Night | 48°F | Chance Showers And Thunderstorms | 5 to 8 mph NNW | 47% |
| Sunday | 70°F | Showers And Thunderstorms Likely | 8 mph NE | 56% |
| Sunday Night | 46°F | Slight Chance Rain Showers then Partly Cloudy | 3 to 7 mph NNE | 20% |
| Monday | 71°F | Sunny | 3 to 12 mph S | 2% |
| Monday Night | 48°F | Mostly Clear | 6 to 12 mph E | 12% |
| Tuesday | 75°F | Mostly Sunny | 5 to 13 mph ESE | 12% |
| Tuesday Night | 50°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 13 mph E | 36% |
| Wednesday | 77°F | Mostly Sunny | 5 to 8 mph E | 12% |
| Wednesday Night | 51°F | Mostly Cloudy | 7 mph ENE | 13% |
| Thursday | 77°F | Mostly Sunny | 6 to 10 mph ENE | 9% |
| Thursday Night | 51°F | Slight Chance Rain Showers then Partly Cloudy | 5 to 10 mph ESE | 19% |
Forecast source: National Weather Service (api.weather.gov) for Pierce (40.648, -104.780). Updated through the day.
Growing snapshot for Pierce
Last spring frost
May 13
First fall frost
Sep 27
Growing season
136 days
Hardiness zone
5b
More local growing data for Pierce: nearby ZIP 80650 weather · frost dates · planting calendar · Colorado frost dates
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Climate data from the nearest NOAA station, Nunn 7 Nne, Co (11 mi from Pierce). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.