Philomath, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Philomath, a city in Benton County, Oregon.
This Afternoon
73°F
Sunny
Sunny. High near 73, with temperatures falling to around 71 in the afternoon. West wind 1 to 5 mph.
7-day forecast for Philomath
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Sunny | 1 to 5 mph W | 0% |
| Tonight | 49°F | Mostly Clear then Patchy Fog | 1 to 7 mph NW | 0% |
| Saturday | 79°F | Patchy Fog then Mostly Sunny | 1 to 5 mph NNE | 0% |
| Saturday Night | 51°F | Partly Cloudy | 5 mph NW | 0% |
| Sunday | 81°F | Sunny | 2 to 7 mph NNW | 0% |
| Sunday Night | 51°F | Mostly Clear | 2 to 7 mph NW | 0% |
| Monday | 77°F | Patchy Fog then Mostly Sunny | 1 to 6 mph NNW | 0% |
| Monday Night | 51°F | Partly Cloudy | 6 mph NW | 0% |
| Tuesday | 74°F | Mostly Sunny | 1 to 6 mph NNW | 0% |
| Tuesday Night | 48°F | Partly Cloudy | 1 to 6 mph NW | 0% |
| Wednesday | 73°F | Mostly Sunny | 1 to 5 mph N | 0% |
| Wednesday Night | 50°F | Partly Cloudy | 0 to 5 mph NNW | 1% |
| Thursday | 76°F | Mostly Sunny | 0 to 6 mph N | 5% |
| Thursday Night | 51°F | Slight Chance Light Rain | 6 mph WNW | 19% |
Forecast source: National Weather Service (api.weather.gov) for Philomath (44.542, -123.360). Updated through the day.
Growing snapshot for Philomath
Last spring frost
Apr 17
First fall frost
Oct 28
Growing season
194 days
Hardiness zone
8b
More local growing data for Philomath: nearby ZIP 97331 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Corvallis State Univ, Or (6.6 mi from Philomath). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.