Sisters, OR Weather Forecast
Deschutes County, Oregon
Seven-day outlook
26–54°F across the weekThe week runs between 26° and 54°, with Tuesday the warmest day of it. There is no real trend across it: one day looks much like the next. Saturday is the wettest day, peaking near 50%. 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 Sisters forecast
Sisters sits at 44.2924°N, 121.5530°W in Deschutes 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
- Deschutes County
- Coordinates
- 44.2924°N, 121.5530°W
- Population
- 2,979 · 2023 estimate
- Land area
- 1.933 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Sisters, 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 Sisters?
The nearest Doppler radar is KRTX (Portland, OR), 120 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 Sisters its center is about 12,700 ft above ground. At that range the beam overshoots the layer where severe weather organizes. The radar is describing the middle of the storm, not its base , which is why a warning for Sisters can look unsupported on the mosaic and still be right. Trust the warning over the picture.
The closest instrument actually measuring the air is KRDM · Redmond Muni on the ASOS/AWOS network, 21 miles away. Far enough that "current conditions" for Sisters is an educated reading of somewhere else, worth knowing before you plan around a single temperature.
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 Sisters
- Redmond, OR18 mi
- Bend, OR20 mi
- Madras, OR32 mi
- Prineville, OR34 mi
- La Pine, OR42 mi
- Sweet Home, OR57 mi
- Oakridge, OR59 mi
- Lebanon, OR69 mi
Elsewhere in Oregon
PortlandEugeneSalemGreshamHillsboroBendAll Oregon forecasts →