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Swift Reservoir is one of the reservoirs LakeRadar tracks in Washington. The water surface spans about 4,680 acres, making it a mid-sized body of water. If you are planning a trip, Swofford Pond are also nearby. Coverage here includes an hourly and 7-day forecast, wind and gust outlook, and activity scores for boating, paddling, and swimming. Forecasts for Swift Reservoir come from the National Weather Service and refresh several times a day.
Updated
Alerts are published by official agencies and shown verbatim. View the official alert source.
Frost Advisory issued October 9 at 10:37AM PDT until October 11 at 9:00AM PDT by NWS Portland OR
Overall Fair (74/100) across 4 activities. Best right now: Fishing (76/100).
How the score is calculated →Best excellent fishing window, averaging 93/100 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 | 7p | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | 6p |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 52° | 52° | 52° | 52° | 52° | 51° | 49° | 47° | 46° | 45° | 45° | 45° | 44° | 45° | 45° | 45° | 45° | 45° | 45° | 44° | 44° | 43° | 43° | 43° |
| Wind (kts) | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 2 | 2 |
| Direction | W | W | NW | NW | NW | NW | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W |
| Gusts (kts) | 15 | 14 | 13 | 14 | 14 | 14 | 13 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 9 | 9 | 8 | 7 | 7 | 6 |
| Precip % | 40% | 11% | 3% | 0% | 0% | 0% | 0% | 0% | 1% | 3% | 4% | 4% | 2% | 3% | 7% | 12% | 18% | 29% | 24% | 42% | 43% | 42% | 47% | 33% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Fri, 12 PM PDT | 52°F | 7 mph W (270°) | 17 mph | 40% | 85% | Chance Light Rain |
| Fri, 1 PM PDT | 52°F | 7 mph W (270°) | 16 mph | 11% | 80% | Mostly Cloudy |
| Fri, 2 PM PDT | 52°F | 7 mph WNW (293°) | 15 mph | 3% | 75% | Mostly Cloudy |
| Fri, 3 PM PDT | 52°F | 7 mph WNW (293°) | 16 mph | 0% | 51% | Partly Sunny |
| Fri, 4 PM PDT | 52°F | 7 mph WNW (293°) | 16 mph | 0% | 51% | Partly Sunny |
| Fri, 5 PM PDT | 51°F | 7 mph WNW (293°) | 16 mph | 0% | 50% | Mostly Sunny |
| Fri, 6 PM PDT | 49°F | 6 mph W (270°) | 15 mph | 0% | 52% | Mostly Cloudy |
| Fri, 7 PM PDT | 47°F | 6 mph W (270°) | 14 mph | 0% | 55% | Mostly Cloudy |
| Fri, 8 PM PDT | 46°F | 6 mph W (270°) | 14 mph | 1% | 46% | Partly Cloudy |
| Fri, 9 PM PDT | 45°F | 6 mph W (270°) | 14 mph | 3% | 44% | Partly Cloudy |
| Fri, 10 PM PDT | 45°F | 6 mph WSW (248°) | 14 mph | 4% | 50% | Partly Cloudy |
| Fri, 11 PM PDT | 45°F | 6 mph W (270°) | 13 mph | 4% | 53% | Mostly Cloudy |
| Sat, 12 AM PDT | 44°F | 6 mph W (270°) | 13 mph | 2% | 51% | Mostly Cloudy |
| Sat, 1 AM PDT | 45°F | 6 mph WSW (248°) | 13 mph | 3% | 57% | Mostly Cloudy |
| Sat, 2 AM PDT | 45°F | 6 mph WSW (248°) | 13 mph | 7% | 70% | Mostly Cloudy |
| Sat, 3 AM PDT | 45°F | 5 mph WSW (248°) | 13 mph | 12% | 68% | Mostly Cloudy |
| Sat, 4 AM PDT | 45°F | 5 mph WSW (248°) | 12 mph | 18% | 76% | Slight Chance Rain Showers |
| Sat, 5 AM PDT | 45°F | 5 mph WSW (248°) | 12 mph | 29% | 80% | Chance Rain Showers |
| Sat, 6 AM PDT | 45°F | 5 mph WSW (248°) | 10 mph | 24% | 75% | Slight Chance Rain Showers |
| Sat, 7 AM PDT | 44°F | 3 mph WSW (248°) | 10 mph | 42% | 74% | Chance Rain Showers |
| Sat, 8 AM PDT | 44°F | 3 mph WSW (248°) | 9 mph | 43% | 69% | Chance Rain Showers |
| Sat, 9 AM PDT | 43°F | 3 mph WSW (248°) | 8 mph | 42% | 79% | Chance Rain Showers |
| Sat, 10 AM PDT | 43°F | 2 mph WSW (248°) | 8 mph | 47% | 65% | Chance Rain Showers |
| Sat, 11 AM PDT | 43°F | 2 mph WSW (248°) | 7 mph | 33% | 77% | Chance Rain Showers |
| Sat, 12 PM PDT | 45°F | 2 mph WSW (248°) | 7 mph | 30% | 61% | Chance Rain Showers |
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 | Today October 9, 2026 | Today October 9, 2026 | Tonight 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) | 53° | 53° | 43° | 49° | 39° | 57° | 40° | 59° | 43° | 58° | 47° | 59° | 47° | 65° |
| Wind | W 7 mph | W 7 mph | WSW 6 mph | WSW 1 to 5 mph | NE 1 to 5 mph | NE 1 to 6 mph | NE 5 mph | ENE 1 to 5 mph | NE 1 to 5 mph | W 3 mph | NE 2 mph | WSW 2 mph | N 1 to 6 mph | E 1 to 6 mph |
| Gusts | 16 mph | 17 mph | 15 mph | 10 mph | 10 mph | 10 mph | 10 mph | 9 mph | 8 mph | 7 mph | 6 mph | 7 mph | 9 mph | 9 mph |
| Precip % | 91% | 76% | 29% | 47% | 8% | 0% | 0% | 0% | 2% | 22% | 29% | 13% | 4% | 4% |
| Forecast |
Good for fishing (76/100), from 5 available inputs. Supporting this: Wind 7 mph from the west. Sky is cloudy (85% cloud cover). 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.
Fair for boating (73/100), from 4 available inputs. Supporting this: Wind 7 mph from the west. Gusts to 17 mph. 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 (70/100), from 4 available inputs. Supporting this: Wind 7 mph from the W is workable but not ideal. Not available from a verified source for this lake: visibility. Confidence is high (88%).
Fair for kayaking (74/100), from 5 available inputs. Supporting this: Wind 7 mph from the west. Gusts to 17 mph. 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.
Offering scenic natural surroundings in WA, Swift Reservoir is a vibrant freshwater reservoir that attracts powerboaters, sailors, and bank fishermen alike. The lake's aquatic ecosystem supports rich gamefish populations and scenic wetland areas. Remember to clean and drain all watercraft to prevent the spread of invasive species.
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 Bull Trout, Lahontan Cutthroat Trout, Rainbow Trout, Chinook Salmon. 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 Swift Reservoir 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, 12:06 PM PDT