Prospect, OR Weather & Growing Conditions
Today
54°F
Partly Sunny then Slight Chance Light Rain
A slight chance of rain between 4pm and 5pm. Partly sunny. High near 54, with temperatures falling to around 49 in the afternoon. South wind around 3 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 54°F | Partly Sunny then Slight Chance Light Rain | 3 mph S | 15% |
| Tonight | 36°F | Slight Chance Light Rain | 1 to 5 mph S | 24% |
| Thursday | 55°F | Mostly Sunny | 2 mph NNW | 1% |
| Thursday Night | 38°F | Partly Cloudy | 2 to 6 mph E | 0% |
| Friday | 62°F | Mostly Sunny | 3 mph ESE | 0% |
| Friday Night | 40°F | Mostly Clear | 1 to 7 mph ENE | 0% |
| Saturday | 67°F | Mostly Sunny | 0 to 6 mph E | 1% |
| Saturday Night | 42°F | Partly Cloudy then Slight Chance Light Rain | 0 to 5 mph E | 21% |
| Sunday | 56°F | Slight Chance Light Rain then Partly Sunny | 2 mph NNW | 21% |
| Sunday Night | 40°F | Mostly Cloudy | 0 to 5 mph ENE | 3% |
| Monday | 57°F | Partly Sunny | 2 mph S | 8% |
| Monday Night | 40°F | Slight Chance Light Rain | 0 to 6 mph ESE | 15% |
| Tuesday | 59°F | Slight Chance Light Rain | 0 to 5 mph SE | 23% |
| Tuesday Night | 41°F | Chance Light Rain | 0 to 13 mph E | 27% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Prospect, OR
Last spring frost
May 19
First fall frost
Oct 3
Growing season
136 days
Hardiness zone
8a
Explore more for Prospect, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Prospect 2 Sw, Or (8.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.