Mount Vernon, WA Weather Forecast
Skagit County, Washington
Seven-day outlook
35–55°F across the weekThe week runs between 35° and 55°, with Wednesday the warmest day of it. There is no real trend across it: one day looks much like the next. Tomorrow is the wettest day, peaking near 27%. 6 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 Mount Vernon forecast
Mount Vernon sits at 48.4171°N, 122.3118°W in Skagit County, Washington. 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
- Skagit County
- Coordinates
- 48.4171°N, 122.3118°W
- Population
- 35,259 · 2023 estimate
- Land area
- 12.298 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Mount Vernon, 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 Mount Vernon?
The nearest Doppler radar is KATX (Seattle/Tacoma, WA), 18 miles to the SSW. 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 Mount Vernon its center is about 960 ft above ground. That is about as close as radar coverage gets in the United States: the lowest scan is still near the ground when it reaches Mount Vernon, so low-level rotation and the leading edge of a gust front show up on it. Mount Vernon is closer to its radar than 88% of US cities.
The closest instrument actually measuring the air is KBVS · Burlington/Skagit Rgnl on the ASOS/AWOS network, 6.1 miles away. Near enough to be representative on most days, though a summer thunderstorm can soak one and miss the other entirely.
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 Washington observing network as of this build.
Forecasts near Mount Vernon
- Burlington, WA3 mi
- Sedro-Woolley, WA7 mi
- Stanwood, WA12 mi
- Anacortes, WA15 mi
- Oak Harbor, WA17 mi
- Arlington, WA19 mi
- Bellingham, WA24 mi
- Marysville, WA24 mi
Elsewhere in Washington
SeattleSpokaneTacomaVancouverBellevueKentAll Washington forecasts →