Fossil, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fossil, a city in Wheeler County, Oregon.
Overnight
53°F
Areas Of Smoke
Areas of smoke. Mostly clear, with a low around 53. East wind around 3 mph.
7-day forecast for Fossil
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Areas Of Smoke | 3 mph E | 0% |
| Tuesday | 84°F | Areas Of Smoke | 2 to 13 mph NE | 0% |
| Tuesday Night | 57°F | Areas Of Smoke | 2 to 13 mph E | 0% |
| Wednesday | 92°F | Areas Of Smoke | 2 to 8 mph SE | 0% |
| Wednesday Night | 63°F | Patchy Smoke then Mostly Clear | 2 to 8 mph E | 0% |
| Thursday | 96°F | Sunny | 3 to 9 mph SW | 0% |
| Thursday Night | 65°F | Mostly Clear | 2 to 9 mph W | 0% |
| Friday | 93°F | Sunny | 5 to 12 mph W | 0% |
| Friday Night | 62°F | Mostly Clear | 1 to 12 mph W | 0% |
| Saturday | 89°F | Sunny | 3 to 13 mph W | 0% |
| Saturday Night | 58°F | Mostly Clear | 2 to 13 mph W | 0% |
| Sunday | 84°F | Sunny | 3 to 12 mph W | 0% |
| Sunday Night | 55°F | Mostly Clear | 3 to 12 mph W | 0% |
| Monday | 83°F | Sunny | 3 to 12 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Fossil (44.998, -120.215). Updated through the day.
Growing snapshot for Fossil
Last spring frost
Jun 3
First fall frost
Sep 14
Growing season
98 days
Hardiness zone
7a
More local growing data for Fossil: nearby ZIP 97830 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Fossil, Or (2.8 mi from Fossil). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.