Fossil, OR Weather & Growing Conditions
This Afternoon
48°F
Mostly Cloudy
Mostly cloudy. High near 48, with temperatures falling to around 41 in the afternoon. North wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 48°F | Mostly Cloudy | 6 mph N | 1% |
| Tonight | 34°F | Partly Cloudy | 1 to 5 mph W | 1% |
| Wednesday | 51°F | Sunny | 0 to 5 mph SW | 8% |
| Wednesday Night | 41°F | Mostly Cloudy then Rain Showers Likely | 0 to 7 mph SW | 57% |
| Thursday | 49°F | Mostly Sunny | 2 to 8 mph SW | 3% |
| Thursday Night | 40°F | Partly Cloudy | 2 to 10 mph SE | 6% |
| Friday | 54°F | Mostly Cloudy | 2 to 12 mph SE | 6% |
| Friday Night | 41°F | Mostly Cloudy | 2 to 9 mph SE | 1% |
| Saturday | 60°F | Mostly Sunny | 3 to 12 mph SE | 1% |
| Saturday Night | 46°F | Mostly Cloudy then Slight Chance Rain Showers | 3 to 14 mph SE | 18% |
| Sunday | 54°F | Slight Chance Rain Showers | 2 to 14 mph SW | 18% |
| Sunday Night | 41°F | Mostly Cloudy | 3 mph NE | 8% |
| Monday | 53°F | Mostly Cloudy | 3 mph S | 10% |
| Monday Night | 43°F | Mostly Cloudy | 1 to 10 mph SE | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fossil, OR
Last spring frost
Jun 3
First fall frost
Sep 14
Growing season
98 days
Hardiness zone
7a
Explore more for Fossil, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Fossil, Or (2.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.