Waterloo, OR Weather & Growing Conditions
Overnight
54°F
Smoke
Smoke. Mostly clear. Low around 54, with temperatures rising to around 56 overnight. South southwest wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Smoke | 1 mph SSW | 0% |
| Tuesday | 95°F | Smoke | 1 to 10 mph WSW | 0% |
| Tuesday Night | 61°F | Areas Of Smoke | 1 to 10 mph WSW | 0% |
| Wednesday | 97°F | Areas Of Smoke | 1 to 6 mph WNW | 0% |
| Wednesday Night | 61°F | Clear | 1 to 6 mph E | 0% |
| Thursday | 97°F | Sunny | 0 to 7 mph NNW | 0% |
| Thursday Night | 58°F | Clear | 0 to 7 mph NNW | 0% |
| Friday | 92°F | Sunny | 0 to 9 mph NNW | 0% |
| Friday Night | 59°F | Mostly Clear | 1 to 9 mph N | 0% |
| Saturday | 89°F | Sunny | 1 to 10 mph N | 0% |
| Saturday Night | 55°F | Mostly Clear | 2 to 10 mph NNW | 0% |
| Sunday | 83°F | Sunny | 2 to 10 mph N | 0% |
| Sunday Night | 52°F | Mostly Clear | 1 to 12 mph N | 0% |
| Monday | 82°F | Sunny | 1 to 9 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Waterloo, OR
Last spring frost
Mar 14
First fall frost
Nov 18
Growing season
248 days
Hardiness zone
8b
Explore more for Waterloo, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Lebanon, Or (4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.