Riverside, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Riverside, a community in Umatilla County, Oregon.
This Afternoon
52°F
Slight Chance Rain Showers
A slight chance of rain showers before 4pm. Mostly cloudy. High near 52, with temperatures falling to around 45 in the afternoon. Northwest wind around 3 mph. Chance of precipitation is 20%.
7-day forecast for Riverside
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 52°F | Slight Chance Rain Showers | 3 mph NW | 15% |
| Tonight | 30°F | Patchy Fog | 2 mph SE | 2% |
| Wednesday | 55°F | Patchy Fog then Sunny | 2 mph S | 1% |
| Wednesday Night | 36°F | Mostly Cloudy then Chance Rain Showers | 5 mph SE | 41% |
| Thursday | 57°F | Chance Rain Showers then Mostly Sunny | 2 to 10 mph SW | 34% |
| Thursday Night | 34°F | Partly Cloudy | 5 mph S | 7% |
| Friday | 59°F | Mostly Cloudy | 3 mph S | 7% |
| Friday Night | 37°F | Mostly Cloudy | 5 mph S | 4% |
| Saturday | 64°F | Mostly Sunny | 3 mph E | 1% |
| Saturday Night | 40°F | Mostly Cloudy then Slight Chance Rain Showers | 3 to 7 mph SE | 17% |
| Sunday | 62°F | Slight Chance Rain Showers | 6 mph SW | 21% |
| Sunday Night | 37°F | Mostly Cloudy | 3 mph S | 11% |
| Monday | 57°F | Mostly Cloudy | 2 mph W | 14% |
| Monday Night | 37°F | Mostly Cloudy then Slight Chance Rain Showers | 2 mph S | 20% |
Forecast source: National Weather Service (api.weather.gov) for Riverside (45.677, -118.737). Updated through the day.
Growing snapshot for Riverside
Last spring frost
Apr 22
First fall frost
Oct 9
Growing season
170 days
Hardiness zone
7a
More local growing data for Riverside: nearby ZIP 97801 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Adams
Athena
Cayuse
Echo
Gopher Flats
Green Meadows
Helix
Hermiston
Kirkpatrick
McKay
Meacham
Milton-Freewater
Mission
Pendleton
Pilot Rock
Stanfield
Tutuilla
Ukiah
Umapine
Umatilla
Weston
Climate data from the nearest NOAA station, Pendleton Dwtn, Or (1.3 mi from Riverside). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.