Annex, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Annex, a community in Washington County, Oregon.
Overnight
54°F
Smoke
Smoke. Mostly clear. Low around 54, with temperatures rising to around 59 overnight. West wind around 6 mph.
7-day forecast for Annex
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Smoke | 6 mph W | 0% |
| Tuesday | 92°F | Smoke | 1 to 6 mph WSW | 0% |
| Tuesday Night | 57°F | Smoke | 5 mph WNW | 0% |
| Wednesday | 96°F | Smoke | 2 mph S | 0% |
| Wednesday Night | 60°F | Smoke | 0 to 3 mph S | 0% |
| Thursday | 102°F | Smoke | 2 mph SSE | 0% |
| Thursday Night | 64°F | Smoke | 5 mph S | 0% |
| Friday | 104°F | Sunny | 2 mph WNW | 0% |
| Friday Night | 67°F | Mostly Clear | 2 to 7 mph NW | 0% |
| Saturday | 101°F | Sunny | 1 to 6 mph NW | 0% |
| Saturday Night | 66°F | Mostly Clear | 2 to 8 mph NW | 0% |
| Sunday | 97°F | Sunny | 3 to 7 mph NW | 0% |
| Sunday Night | 63°F | Mostly Clear | 3 to 8 mph NNW | 0% |
| Monday | 96°F | Sunny | 2 to 6 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Annex (44.234, -116.992). Updated through the day.
Growing snapshot for Annex
Last spring frost
Apr 23
First fall frost
Oct 13
Growing season
174 days
Hardiness zone
7a
More local growing data for Annex: nearby ZIP 83672 weather · frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Weiser, Id (8.9 mi from Annex). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.