Amherst, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Amherst, a community in Phillips County, Colorado.
Overnight
57°F
Patchy Smoke
Patchy smoke. Mostly cloudy, with a low around 57. North northeast wind around 20 mph, with gusts as high as 31 mph.
7-day forecast for Amherst
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Patchy Smoke | 20 mph NNE | 3% |
| Tuesday | 72°F | Patchy Smoke | 13 to 17 mph NE | 4% |
| Tuesday Night | 53°F | Patchy Smoke | 7 to 13 mph E | 38% |
| Wednesday | 75°F | Patchy Smoke | 5 to 10 mph ESE | 33% |
| Wednesday Night | 54°F | Mostly Clear | 8 to 12 mph SSE | 1% |
| Thursday | 88°F | Sunny | 8 to 15 mph SSE | 1% |
| Thursday Night | 59°F | Clear | 7 to 15 mph SSE | 2% |
| Friday | 94°F | Sunny | 6 to 13 mph S | 2% |
| Friday Night | 62°F | Clear | 9 to 14 mph S | 3% |
| Saturday | 99°F | Sunny | 9 to 17 mph S | 3% |
| Saturday Night | 64°F | Mostly Clear | 10 to 18 mph S | 1% |
| Sunday | 99°F | Sunny | 9 to 16 mph NE | 2% |
| Sunday Night | 65°F | Partly Cloudy | 9 to 16 mph SSE | 9% |
| Monday | 98°F | Mostly Sunny | 9 to 14 mph SSW | 2% |
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 Aug 4, 2026.