Moses Lake & Potholes Reservoir, WA
Today’s Forecast:
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Today’s Report:
Boating
Excellent for boating. High near 68°F. Light wind (9 mph).
- Temp: Marginal weather factor
- Rain: Favorable conditions
- Wind: Favorable conditions
- Thunderstorm: Favorable conditions
Golf
Excellent for golf. High near 68°F. Light wind (9 mph).
- Temp: Favorable conditions
- Rain: Favorable conditions
- Wind: Favorable conditions
- Thunderstorm: Favorable conditions
Camping
Excellent for camping. High near 68°F. Light wind (9 mph).
- Temp: Favorable conditions
- Rain: Favorable conditions
- Wind: Favorable conditions
- Thunderstorm: Favorable conditions
About Moses Lake & Potholes Reservoir
Moses Lake & Potholes Reservoir is a Washington destination for large Columbia Basin lakes, reservoir arms, dunes, boat launches, golf, campgrounds, and wildlife areas.
Make the Most of a Moses Lake & Potholes Reservoir Day
Lake wind, heat, dust, smoke, and thunderstorms can change exposed plans quickly. Check fire restrictions and launch conditions before a campground weekend.
Weather Tips for Moses Lake & Potholes Reservoir
- Check heat, wind, wildfire smoke, and fire restrictions as closely as rain because exposed eastern routes offer limited shade.
- Cold water, waves, current, wind, and lightning should guide water plans more than sunshine alone.
- Check overnight lows, wet ground, fire rules, drainage, and the nearest substantial shelter before settling into camp.
- Summer smoke, winter access, shoulder-season closures, and shorter fall daylight can matter even during an otherwise mild forecast.
Nearby Towns and Areas
This page can also be useful when planning outdoor time near:
- Potholes State Park
- Moses Lake Sand Dunes
- O’Sullivan Dam
- Columbia National Wildlife Refuge
- Warden
- Ephrata
- Crab Creek
Plan Around the Conditions
Use the forecast to choose the best version of a Moses Lake & Potholes Reservoir day. Match wind, precipitation, smoke, water conditions, trail surfaces, road access, temperature, and daylight to the activity that gives your group the safest and most comfortable plan.
7-Day Forecast for Moses Lake & Potholes Reservoir
Moses Lake & Potholes Reservoir Weather by Season
Winter
Winter at Moses Lake & Potholes Reservoir brings cold air, periodic snow, ice, and strong wind. Roads and exposed trails can stay slick even during otherwise dry stretches.
Spring
Spring around Moses Lake & Potholes Reservoir brings changing conditions, rising rivers, wet trails, and lingering mountain snow. Cold water from rain and snowmelt remains a major planning factor. Mountain and eastern thunderstorms become increasingly possible later in the season.
Summer
Summer at Moses Lake & Potholes Reservoir is usually the driest and most dependable season, but wildfire smoke, fire restrictions, heat, and afternoon thunderstorms can interrupt plans. Use calmer mornings for boating or paddling and keep a shore-based backup. Dry vegetation makes local fire rules especially important.
Fall
Fall at Moses Lake & Potholes Reservoir brings cooler temperatures, shorter daylight, changing color, and the return of wetter weather west of the Cascades. Water cools faster than the air, increasing cold-water consequences. Check seasonal facility hours and allow extra time on busy event or salmon-viewing weekends.
Key Climate Data Points
- Annual average temperature: around 50–53°F, using the relevant local or regional elevation context.
- Annual snowfall: generally around 10–25 inches depending on location, with substantial year-to-year and elevation variation.
- Warmest months: July and August are normally warmest.
- Coolest months: December and January are typically coolest.
- Wettest season: late fall and winter.
- Driest season: July and August.
- Best outdoor window: May through September for boating and camping, with mornings favored in summer.