La Grande, OR Weather Forecast
Union County, Oregon
Seven-day outlook
31–51°F across the weekThe week runs between 30° and 51°, with tomorrow the warmest day of it. There is no real trend across it: one day looks much like the next. Sunday is the wettest day, peaking near 63%. 5 of the 7 days stay dry.
Forecasts come from the National Weather Service's own computer models, and current conditions from the nearest reporting weather station. Both are served through the weather API. A forecast is guidance, not a warning, and anything the Weather Service has actually issued is on the live map.
The written summaries on this page are generated from the forecast data above, not by a meteorologist. Each sentence is a reading of the same numbers you can see, and no forecaster has reviewed them.
About the La Grande forecast
La Grande sits at 45.3245°N, 118.0869°W in Union County, Oregon. The forecast above is drawn for that point from the National Weather Service's own computer models: a seven-day outlook, and a finer-grained one covering the next eighteen hours where it reaches, and the radar and alert panels show what the Weather Service has out over the area right now.
- County
- Union County
- Coordinates
- 45.3245°N, 118.0869°W
- Population
- 12,973 · 2023 estimate
- Land area
- 4.583 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for La Grande, and the forecast is for that location, not for every address inside the city limits, and a large city can have real weather differences from one side to the other.
How well can the network see La Grande?
The nearest Doppler radar is KPDT (Pendleton, OR), 45 miles to the NW. A WSR-88D's lowest routine scan sits half a degree above horizontal, and the earth curves away beneath it, so by the time that beam reaches La Grande its center is about 3,100 ft above ground. That is comfortably inside the useful range. The lowest scan passes low enough over La Grande to show rotation in the part of a storm where tornadoes actually form.
The closest instrument actually measuring the air is KLGD · La Grande/Union Cnty on the ASOS/AWOS network, 4.5 miles away. Close enough that its readings are, for practical purposes, the conditions in town.
Beam height is the standard 4/3-earth approximation for the 0.5° scan and assumes normal refraction; it is where the center of the beam is, not its edges, and unusual temperature profiles bend it. Radar siting from the NWS WSR-88D network, station positions from the Oregon observing network as of this build.
Forecasts near La Grande
- Baker City, OR40 mi
- Pendleton, OR43 mi
- Milton-Freewater, OR45 mi
- College Place, WA52 mi
- Walla Walla, WA53 mi
- Hermiston, OR68 mi
- Dayton, WA69 mi
- Umatilla, OR73 mi
Elsewhere in Oregon
PortlandEugeneSalemGreshamHillsboroBendAll Oregon forecasts →