Loading page content…
Loading lake conditions…
Billy Clapp Lake is one of the reservoirs LakeRadar tracks in Washington. It covers roughly 974 surface acres (about 2 square miles). Fish documented in the area include Lahontan Cutthroat Trout, Rainbow Trout, Bluegill, and Largemouth Bass. For this location, LakeRadar tracks an hourly and 7-day forecast, wind and gust outlook, fishing conditions, and activity scores for boating, paddling, and swimming. If you are planning a trip, Banks Lake, Moses Lake, and Potholes Reservoir are also nearby. Use the conditions and forecast on this page to decide when to go boating, fishing, or paddling at Billy Clapp Lake.
Updated
Alerts are published by official agencies and shown verbatim. View the official alert source.
Blowing Dust Advisory issued October 8 at 1:33PM PDT until October 9 at 7:00PM PDT by NWS Spokane WA
Overall Good (80/100) across 4 activities. Best right now: Fishing (85/100).
How the score is calculated →Best excellent fishing window, averaging 91/100 across these hours. Wind 8 mph from the northwest. Dawn hours (06:00 local). Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | 6p | 7p | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 54° | 54° | 52° | 51° | 50° | 50° | 51° | 54° | 60° | 64° | 66° | 67° | 66° | 66° | 65° | 62° | 59° | 55° | 53° | 51° | 50° | 48° | 47° | 46° |
| Wind (kts) | 3 | 3 | 4 | 7 | 7 | 7 | 8 | 9 | 11 | 16 | 17 | 19 | 21 | 21 | 21 | 21 | 19 | 17 | 15 | 15 | 15 | 12 | 12 | 12 |
| Direction | SE | NW | W | NW | NW | NW | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | NW | NW | NW |
| Gusts (kts) | 4 | 4 | 4 | 10 | 12 | 14 | 18 | 22 | 26 | 34 | 35 | 36 | 37 | 36 | 36 | 34 | 31 | 29 | 25 | 25 | 25 | 19 | 19 | 19 |
| Precip % | 0% | 0% | 0% | 4% | 4% | 4% | 4% | 4% | 4% | 3% | 3% | 3% | 3% | 3% | 3% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Fri, 2 AM PDT | 54°F | 3 mph SE (135°) | 5 mph | 0% | 52% | Mostly Cloudy |
| Fri, 3 AM PDT | 54°F | 3 mph NW (315°) | 5 mph | 0% | 48% | Partly Cloudy |
| Fri, 4 AM PDT | 52°F | 5 mph W (270°) | 5 mph | 0% | 39% | Partly Cloudy |
| Fri, 5 AM PDT | 51°F | 8 mph NW (315°) | 12 mph | 4% | 38% | Partly Cloudy |
| Fri, 6 AM PDT | 50°F | 8 mph NW (315°) | 14 mph | 4% | 44% | Mostly Sunny |
| Fri, 7 AM PDT | 50°F | 8 mph NW (315°) | 16 mph | 4% | 53% | Partly Sunny |
| Fri, 8 AM PDT | 51°F | 9 mph W (270°) | 21 mph | 4% | 50% | Mostly Sunny |
| Fri, 9 AM PDT | 54°F | 10 mph W (270°) | 25 mph | 4% | 51% | Partly Sunny |
| Fri, 10 AM PDT | 60°F | 13 mph W (270°) | 30 mph | 4% | 53% | Partly Sunny |
| Fri, 11 AM PDT | 64°F | 18 mph W (270°) | 39 mph | 3% | 60% | Patchy Blowing Dust |
| Fri, 12 PM PDT | 66°F | 20 mph W (270°) | 40 mph | 3% | 56% | Patchy Blowing Dust |
| Fri, 1 PM PDT | 67°F | 22 mph W (270°) | 41 mph | 3% | 66% | Patchy Blowing Dust |
| Fri, 2 PM PDT | 66°F | 24 mph W (270°) | 43 mph | 3% | 63% | Patchy Blowing Dust |
| Fri, 3 PM PDT | 66°F | 24 mph W (270°) | 41 mph | 3% | 59% | Patchy Blowing Dust |
| Fri, 4 PM PDT | 65°F | 24 mph W (270°) | 41 mph | 3% | 49% | Patchy Blowing Dust |
| Fri, 5 PM PDT | 62°F | 24 mph W (270°) | 39 mph | 0% | 34% | Patchy Blowing Dust |
| Fri, 6 PM PDT | 59°F | 22 mph W (270°) | 36 mph | 0% | 25% | Patchy Blowing Dust |
| Fri, 7 PM PDT | 55°F | 20 mph W (270°) | 33 mph | 0% | 29% | Patchy Blowing Dust |
| Fri, 8 PM PDT | 53°F | 17 mph W (270°) | 29 mph | 0% | 21% | Mostly Clear |
| Fri, 9 PM PDT | 51°F | 17 mph W (270°) | 29 mph | 0% | 14% | Mostly Clear |
| Fri, 10 PM PDT | 50°F | 17 mph W (270°) | 29 mph | 0% | 17% | Mostly Clear |
| Fri, 11 PM PDT | 48°F | 14 mph NW (315°) | 22 mph | 0% | 17% | Mostly Clear |
| Sat, 12 AM PDT | 47°F | 14 mph NW (315°) | 22 mph | 0% | 19% | Mostly Clear |
| Sat, 1 AM PDT | 46°F | 14 mph NW (315°) | 22 mph | 0% | 21% | Mostly Clear |
| Sat, 2 AM PDT | 45°F | 12 mph NW (315°) | 15 mph | 0% | 26% | Partly Cloudy |
Official National Weather Service hourly forecast. Showing 10 of 25 hours. Wind arrows point the way the wind is blowing; the compass point and degrees show where it comes from.
| Period | Overnight October 9, 2026 | Friday October 9, 2026 | Friday Night October 9, 2026 | Saturday October 10, 2026 | Saturday Night October 10, 2026 | Sunday October 11, 2026 | Sunday Night October 11, 2026 | Columbus Day October 12, 2026 | Monday Night October 12, 2026 | Tuesday October 13, 2026 | Tuesday Night October 13, 2026 | Wednesday October 14, 2026 | Wednesday Night October 14, 2026 | Thursday October 15, 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 50° | 68° | 39° | 58° | 41° | 57° | 36° | 61° | 35° | 60° | 38° | 64° | 40° | 64° |
| Wind | NW 3 to 8 mph | W 8 to 24 mph | NW 8 to 22 mph | N 8 to 16 mph | N 16 to 29 mph | NE 17 to 29 mph | N 8 to 17 mph | N 6 to 12 mph | W 2 to 7 mph | E 3 to 9 mph | W 3 to 9 mph | W 6 to 9 mph | NW 6 to 9 mph | N 6 to 9 mph |
| Gusts | 12 mph | 43 mph | 36 mph | 27 mph | 36 mph | 39 mph | 29 mph | 13 mph | 9 mph | 12 mph | 12 mph | 17 mph | 14 mph | 15 mph |
| Precip % | 4% | 4% | 2% | 34% | 34% | 4% | 1% | 1% | 1% | 4% | 13% | 13% | 5% | 1% |
| Forecast |
Good for fishing (85/100), from 5 available inputs. Supporting this: Wind 3 mph from the southeast. 0% chance of precipitation. Not available from a verified source for this lake: pressure trend, water temperature. Confidence is moderate (74%) because some inputs are unavailable or older than ideal.
Good for boating (83/100), from 4 available inputs. Supporting this: Wind 3 mph from the southeast. Gusts to 5 mph. Working against it: Active moderate alert: Blowing Dust Advisory. Not available from a verified source for this lake: visibility and conditions, verified water access. Confidence is moderate (84%) because some inputs are unavailable or older than ideal.
Fair for sailing (61/100), from 4 available inputs. Supporting this: Gusts are within 2 mph of sustained wind, so the breeze is steady. 0% chance of precipitation. Working against it: Active moderate alert: Blowing Dust Advisory. Not available from a verified source for this lake: visibility. Confidence is high (88%).
Good for kayaking (84/100), from 5 available inputs. Supporting this: Wind 3 mph from the southeast. Gusts to 5 mph. Working against it: Active moderate alert: Blowing Dust Advisory. Confidence is high (90%).
Water temperature is not available from a verified source for this lake. No swimming score is shown without it.
Loading interactive map…
Individual boat ramp GPS coordinates are maintained under the jurisdiction of WA Parks & Wildlife Authority. Public boaters should verify seasonal launch water levels, gate hours, and daily vehicle/vessel fees before traveling.
Billy Clapp Lake provides vital open-water recreation for visitors across WA, offering public boat ramps and scenic shoreline amenities. Anglers target an assortment of freshwater species while pleasure boaters cruise its open basins. Facility operations and resource conservation are overseen by state and local natural resource agencies.
Valid freshwater sport fishing license issued by Washington Department of Fish and Wildlife (WDFW) is required for anglers age 15+. Digital license on mobile is accepted.
Mandatory Clean, Drain & Dry inspection. Out-of-area craft require on-site Aquatic Invasive Species (AIS Quagga/Zebra) inspection or decontamination before launch. USCG life jackets required for all.
Public shoreline and boating access managed by State & Local Authorities. Verify seasonal gate hours, launch fees, and parking rules before travel.
High-speed motorboating, pontoon cruising, wakeboarding, and water skiing across main channels. Target gamefish include Lahontan Cutthroat Trout, Rainbow Trout, Bluegill, Largemouth Bass. Morning hours typically provide optimal glassy conditions for kayak and stand-up paddleboard (SUP) touring.
Warm water temperatures, peak swimming, active watersports, and open full-service campgrounds. Highest weekly attendance; plan early arrivals on summer weekends.
Spring pre-spawn and fall feeding transitions create prime trophy angling conditions. Cooler air, lower boat traffic, and vibrant seasonal shoreline foliage.
Mild year-round outdoor climate. Uncrowded waters, active winter bass and crappie fishing, and open year-round boat launch access.
No external source rows are cited by the data currently shown on this page.
Updated
Scores are heuristics, not safety guarantees. LakeRadar scores summarize available conditions and are not a substitute for official warnings, local rules, or on-water judgment.
All telemetry for Billy Clapp Lake is synchronized directly from authorized federal and state monitoring networks (USGS, NWS, NOAA, and state environmental authorities). Observations are strictly instrumented readings — unmonitored sensors are transparently disclosed rather than synthetic estimates.
Last source audit: Oct 9, 2:36 AM PDT