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In Washington, Diablo Lake is a reservoir used for time on and around the water. It covers roughly 804 surface acres (about 1 square miles). Fish documented in the area include Kokanee Salmon, Chinook Salmon, Coho Salmon, and Bull Trout. It reaches a maximum depth of roughly 320 feet at an elevation of about 1,205 feet. For this location, LakeRadar tracks an hourly and 7-day forecast, wind and gust outlook, water readings, fishing conditions, and activity scores for boating, paddling, and swimming. Other waters in the region include Diablo Lake, Gorge Lake, and Ross Lake. LakeRadar pulls readings from a mapped water gauge, so current water data is shown when the station reports. Forecasts for Diablo Lake come from the National Weather Service and refresh several times a day.
Updated
No active alerts for this lake as of the last check (Oct 11, 3:20 PM PDT). Alerts are re-checked automatically; see the official source for updates.
Overall Good (85/100) across 4 activities. Best right now: Sailing (93/100).
How the score is calculated →Best excellent fishing window, averaging 91/100 across these hours. Wind 6 mph from the west. Dusk hours (18:00 local). Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | 6p | 7p | 8p | 9p |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 54° | 54° | 55° | 53° | 51° | 48° | 45° | 44° | 43° | 41° | 41° | 40° | 40° | 39° | 38° | 38° | 38° | 37° | 42° | 49° | 52° | 55° | 57° | 58° |
| Wind (kts) | 9 | 9 | 8 | 7 | 7 | 7 | 7 | 8 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 4 | 3 | 3 | 2 | 1 | 1 | 2 | 3 | 5 |
| Direction | NE | NE | NE | NE | E | E | E | E | E | E | NE | NE | N | NE | NE | NE | NE | NE | NE | E | SW | SW | W | W |
| Gusts (kts) | 15 | 15 | 15 | 14 | 13 | 13 | 13 | 14 | 15 | 14 | 12 | 11 | 10 | 8 | 7 | 6 | 5 | 5 | 4 | 3 | 3 | 4 | 5 | 7 |
| Precip % | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Sun, 3 PM PDT | 54°F | 10 mph NNE (23°) | 17 mph | 0% | 3% | Sunny |
| Sun, 4 PM PDT | 54°F | 10 mph NNE (23°) | 17 mph | 0% | 4% | Sunny |
| Sun, 5 PM PDT | 55°F | 9 mph NE (45°) | 17 mph | 0% | 5% | Sunny |
| Sun, 6 PM PDT | 53°F | 8 mph NE (45°) | 16 mph | 0% | 5% | Clear |
| Sun, 7 PM PDT | 51°F | 8 mph ENE (68°) | 15 mph | 0% | 6% | Mostly Clear |
| Sun, 8 PM PDT | 48°F | 8 mph ENE (68°) | 15 mph | 0% | 7% | Mostly Clear |
| Sun, 9 PM PDT | 45°F | 8 mph ENE (68°) | 15 mph | 0% | 5% | Clear |
| Sun, 10 PM PDT | 44°F | 9 mph ENE (68°) | 16 mph | 0% | 4% | Clear |
| Sun, 11 PM PDT | 43°F | 9 mph E (90°) | 17 mph | 0% | 3% | Clear |
| Mon, 12 AM PDT | 41°F | 8 mph ENE (68°) | 16 mph | 0% | 2% | Clear |
| Mon, 1 AM PDT | 41°F | 8 mph NNE (23°) | 14 mph | 0% | 3% | Clear |
| Mon, 2 AM PDT | 40°F | 7 mph NNE (23°) | 13 mph | 0% | 2% | Clear |
| Mon, 3 AM PDT | 40°F | 7 mph N (0°) | 12 mph | 0% | 5% | Clear |
| Mon, 4 AM PDT | 39°F | 6 mph NNE (23°) | 9 mph | 0% | 3% | Clear |
| Mon, 5 AM PDT | 38°F | 6 mph NNE (23°) | 8 mph | 0% | 1% | Clear |
| Mon, 6 AM PDT | 38°F | 5 mph NNE (23°) | 7 mph | 0% | 3% | Sunny |
| Mon, 7 AM PDT | 38°F | 3 mph NE (45°) | 6 mph | 0% | 0% | Sunny |
| Mon, 8 AM PDT | 37°F | 3 mph NE (45°) | 6 mph | 0% | 0% | Sunny |
| Mon, 9 AM PDT | 42°F | 2 mph NE (45°) | 5 mph | 0% | 0% | Sunny |
| Mon, 10 AM PDT | 49°F | 1 mph E (90°) | 4 mph | 0% | 0% | Sunny |
| Mon, 11 AM PDT | 52°F | 1 mph SSW (203°) | 4 mph | 0% | 0% | Sunny |
| Mon, 12 PM PDT | 55°F | 2 mph SSW (203°) | 5 mph | 0% | 0% | Sunny |
| Mon, 1 PM PDT | 57°F | 3 mph WSW (248°) | 6 mph | 0% | 0% | Sunny |
| Mon, 2 PM PDT | 58°F | 6 mph WSW (248°) | 8 mph | 0% | 0% | Sunny |
| Mon, 3 PM PDT | 57°F | 6 mph WSW (248°) | 10 mph | 0% | 3% | Sunny |
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 | This Afternoon October 11, 2026 | Tonight 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 | Thursday Night October 15, 2026 | Friday October 16, 2026 | Friday Night October 16, 2026 | Saturday October 17, 2026 | Saturday Night October 17, 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 56° | 36° | 59° | 39° | 59° | 46° | 60° | 47° | 69° | 47° | 70° | 49° | 59° | 45° |
| Wind | NE 10 mph | NE 6 to 9 mph | NW 1 to 7 mph | SSW 1 to 6 mph | S 1 to 7 mph | SW 3 to 7 mph | SW 5 mph | NNW 3 to 8 mph | ENE 2 to 8 mph | E 3 to 16 mph | SE 6 to 13 mph | S 6 to 15 mph | SW 13 mph | SW 6 to 10 mph |
| Gusts | 17 mph | 17 mph | 13 mph | 13 mph | 13 mph | 13 mph | 10 mph | 14 mph | 14 mph | 29 mph | 23 mph | 28 mph | 23 mph | 18 mph |
| Precip % | 0% | 0% | 0% | 0% | 4% | 18% | 18% | 2% | 0% | 0% | 3% | 42% | 45% | 28% |
| Forecast |
Good for fishing (81/100), from 5 available inputs. Supporting this: Wind 10 mph from the north-northeast. 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 (85/100), from 4 available inputs. Supporting this: No active official alerts for this lake. Wind 10 mph from the north-northeast. 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.
Excellent for sailing (93/100), from 4 available inputs. Supporting this: Wind 10 mph from the NNE is in the preferred sailing range. No active official alerts for this lake. 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 10 mph from the north-northeast. No active official alerts for this lake. Confidence is high (90%).
Water temperature is not available from a verified source for this lake. No swimming score is shown without it.
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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.
Diablo Lake is a versatile freshwater reservoir in WA, overseen by state and local natural resource agencies to provide safe, sustainable outdoor recreation for all visitors. The lake supports active watersports, pontoon cruising, and bank fishing along accessible public easements. Checking current weather alerts and wave forecasts ensures a safe trip.
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 Kokanee Salmon, Chinook Salmon, Coho Salmon, Bull Trout. 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 Diablo 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 11, 3:20 PM PDT