Weather
Skagit County, Washington
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Lake Cavanaugh Weather & Mountain Climate
Lake Cavanaugh sits at roughly 1,000 feet in the Cascade foothills of Skagit County, Washington, where a classic Pacific Northwest maritime climate shapes life on the water. Expect cool, wet winters with rain at lake level and snow on the surrounding ridges, followed by warm, dry summers that draw boaters, anglers, and cabin guests from across the Seattle area. Because the lake is tucked into the mountains, conditions here can differ noticeably from nearby Mount Vernon and the Skagit Valley floor — which is exactly why a hyper-local forecast is so useful before you make the drive up.
This page brings those local conditions together in one live dashboard. When data is available you'll see the current temperature and "feels-like," wind speed, direction and gusts, humidity, barometric pressure, and recent precipitation, alongside an interactive RainViewer radar, an hour-by-hour 48-hour outlook, and a seven-day forecast with sunrise and sunset times. Use it to time a weekend on the water, decide whether to pack rain gear, or check the wind before you back the trailer down the boat launch.
Spring
March – May
Cool and changeable. Snowmelt refills the lake, rain showers come and go, and afternoons climb into the 50s and 60s°F as the forest greens up.
Summer
June – August
The prime season: warm, mostly dry days in the 70s to low 80s°F, cool mountain nights, and calm water ideal for swimming, paddling, and wakeboarding.
Fall
September – November
Crisp mornings, turning foliage, and steadily increasing rain. Fog often settles over the lake at dawn before burning off to clear, quiet afternoons.
Winter
December – February
Wet and cold with temperatures in the 30s and 40s°F. Rain is the rule at lake level, with occasional snow and hard freezes when Arctic air slides down from the Cascades.
Lake Cavanaugh weather forecast
Plan your weekend on the water or your cabin with the most accurate, hyper-local Lake Cavanaugh weather forecast. Whether you are prepping the boat, heading up to a waterfront cabin, or just checking the Skagit County live weather radar, our real-time dashboard has you covered.
Track live wind speeds and gusts for ideal wakeboarding conditions, monitor the interactive radar for incoming Pacific Northwest storm fronts, and review the detailed 48-hour precipitation graph before you pack. Don't guess the mountain weather — check the exact local conditions right here at beautiful Lake Cavanaugh before you back your trailer down the launch. See the weather live on our 4K live streams. Experience that authentic Washington State @LakeLife.