Monument, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Monument, a city in Grant County, Oregon.
This Afternoon
79°F
Sunny
Sunny. High near 79, with temperatures falling to around 77 in the afternoon. West wind around 2 mph.
7-day forecast for Monument
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Sunny | 2 mph W | 1% |
| Tonight | 48°F | Mostly Clear | 2 mph N | 1% |
| Saturday | 83°F | Sunny | 1 mph N | 0% |
| Saturday Night | 50°F | Partly Cloudy | 0 mph | 0% |
| Sunday | 88°F | Sunny | 1 mph N | 0% |
| Sunday Night | 52°F | Mostly Clear | 1 mph W | 0% |
| Monday | 88°F | Sunny | 2 mph NW | 0% |
| Monday Night | 52°F | Partly Cloudy | 2 mph N | 0% |
| Tuesday | 85°F | Sunny | 0 to 3 mph N | 1% |
| Tuesday Night | 49°F | Partly Cloudy | 0 to 3 mph N | 1% |
| Wednesday | 82°F | Sunny | 2 mph N | 0% |
| Wednesday Night | 49°F | Partly Cloudy | 1 mph NE | 0% |
| Thursday | 88°F | Sunny | 2 mph NE | 1% |
| Thursday Night | 51°F | Partly Cloudy | 2 mph NW | 5% |
Forecast source: National Weather Service (api.weather.gov) for Monument (44.821, -119.421). Updated through the day.
Growing snapshot for Monument
Last spring frost
May 9
First fall frost
Sep 27
Growing season
139 days
Hardiness zone
7a
More local growing data for Monument: nearby ZIP 97864 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Monument 2, Or (2.7 mi from Monument). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.