Amherst, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Amherst, a community in Phillips County, Colorado.
This Afternoon
86°F
Mostly Sunny
Mostly sunny. High near 86, with temperatures falling to around 84 in the afternoon. Northeast wind around 7 mph.
7-day forecast for Amherst
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 86°F | Mostly Sunny | 7 mph NE | 2% |
| Tonight | 59°F | Showers And Thunderstorms Likely | 3 to 8 mph N | 58% |
| Saturday | 74°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 5 to 9 mph ENE | 37% |
| Saturday Night | 55°F | Showers And Thunderstorms | 5 to 9 mph ENE | 85% |
| Sunday | 67°F | Showers And Thunderstorms | 6 mph ENE | 81% |
| Sunday Night | 51°F | Showers And Thunderstorms Likely | 6 mph ENE | 57% |
| Monday | 68°F | Mostly Sunny | 7 mph N | 11% |
| Monday Night | 50°F | Mostly Clear then Slight Chance Rain Showers | 8 to 13 mph ESE | 18% |
| Tuesday | 67°F | Partly Sunny | 13 to 21 mph SE | 12% |
| Tuesday Night | 55°F | Chance Showers And Thunderstorms | 18 mph SE | 37% |
| Wednesday | 73°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 15 to 18 mph SSE | 19% |
| Wednesday Night | 56°F | Chance Showers And Thunderstorms then Mostly Cloudy | 8 to 14 mph SSE | 30% |
| Thursday | 74°F | Partly Sunny | 9 mph SE | 10% |
| Thursday Night | 56°F | Slight Chance Rain Showers | 8 mph ESE | 18% |
Forecast source: National Weather Service (api.weather.gov) for Amherst (40.683, -102.173). Updated through the day.
Growing snapshot for Amherst
Last spring frost
May 11
First fall frost
Oct 3
Growing season
144 days
Hardiness zone
5b
More local growing data for Amherst: nearby ZIP 80721 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Holyoke, Co (14 mi from Amherst). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.