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Official National Weather Service (NWS) point forecast and real-time wind conditions for Butt Valley Reservoir (California). 24-hour hour-by-hour wind timelines, peak gusts, watercraft recreation safety thresholds, and 7-day marine outlook.
Today: High 55°F · Low 39°F
Peak gusts: 22 mph · Lake surface chop expected
Humidity: 33% · Barometer: 29.91 inHg
USGS water monitoring available for Butt Valley Reservoir.
Excellent for boating (98/100), from 4 available inputs. Supporting this: Wind 3 mph from the west. Gusts to 6 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.
Good for fishing (87/100), from 5 available inputs. Supporting this: Wind 3 mph from the west. 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.
Excellent for kayaking (96/100), from 5 available inputs. Supporting this: Wind 3 mph from the west. Gusts to 6 mph. Confidence is high (90%).
Water temperature is not available from a verified source for this lake. No swimming score is shown without it. Supporting this: No active official alerts for this lake. 0% chance of precipitation. Working against it: Air temperature 50°F. Not available from a verified source for this lake: water temperature.
| Time | Air Temp | Wind (mph) | Direction | Peak Gusts | Rain Chance | Sky & Conditions |
|---|---|---|---|---|---|---|
| 9 PM | 50°F | 3 mph | W | ⚡ 6 mph | 0% | Clear |
| 10 PM | 49°F | 5 mph | N | ⚡ 7 mph | 0% | Mostly Clear |
| 11 PM | 48°F | 7 mph | N | ⚡ 9 mph | 0% | Clear |
| 12 AM | 48°F | 8 mph | N | ⚡ 10 mph | 0% | Clear |
| 1 AM | 46°F | 8 mph | N | ⚡ 10 mph | 0% | Clear |
| 2 AM | 45°F | 8 mph | NE | ⚡ 9 mph | 0% | Clear |
| 3 AM | 43°F | 8 mph | N | ⚡ 9 mph | 0% | Clear |
| 4 AM | 41°F | 8 mph | N | ⚡ 10 mph | 0% | Clear |
| 5 AM | 41°F | 8 mph | NE | ⚡ 10 mph | 0% | Clear |
| 6 AM | 41°F | 8 mph | N | ⚡ 10 mph | 0% | Sunny |
| 7 AM | 39°F | 8 mph | N | ⚡ 10 mph | 0% | Sunny |
| 8 AM | 40°F | 8 mph | N | ⚡ 14 mph | 0% | Sunny |
| 9 AM | 41°F | 8 mph | NE | ⚡ 15 mph | 1% | Mostly Sunny |
| 10 AM | 43°F | 8 mph | NE | ⚡ 16 mph | 1% | Mostly Sunny |
| 11 AM | 46°F | 8 mph | NE | ⚡ 17 mph | 1% | Mostly Sunny |
| 12 PM | 50°F | 8 mph | NE | ⚡ 16 mph | 2% | Mostly Sunny |
| 1 PM | 54°F | 8 mph | E | ⚡ 17 mph | 1% | Mostly Sunny |
| 2 PM | 55°F | 9 mph | E | ⚡ 17 mph | 2% | Mostly Sunny |
| 3 PM | 55°F | 9 mph | E | ⚡ 18 mph | 2% | Partly Sunny |
| 4 PM | 56°F | 9 mph | E | ⚡ 20 mph | 2% | Mostly Sunny |
| 5 PM | 54°F | 7 mph | E | ⚡ 15 mph | 24% | Slight Chance Light Rain |
| 6 PM | 53°F | 7 mph | E | ⚡ 15 mph | 27% | Chance Light Rain |
| 7 PM | 51°F | 7 mph | E | ⚡ 15 mph | 20% | Slight Chance Light Rain |
| 8 PM | 49°F | 17 mph | NE | ⚡ 30 mph | 20% | Slight Chance Light Rain |
Mirror-like to gentle rippled water. Optimal conditions for paddleboarding, kayaking, swimming, and beginner water skiing or wakeboarding.
Pleasant breeze with small wavelets. Great for sailing, pleasure cruising, pontoon boats, and trolling for trout and bass.
Moderate waves with whitecaps likely. Requires skilled boat handling; kayaks, canoes, and stand-up paddleboards should stay close to sheltered bays.
Steep waves, cold spray, and hazardous open water. Avoid small craft voyages. Always check official National Weather Service lake wind advisories.
Clear. Low around 39, with temperatures rising to around 41 overnight. North wind 3 to 8 mph.
A slight chance of rain after 5pm. Mostly sunny. High near 57, with temperatures falling to around 54 in the afternoon. Northeast wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
A chance of rain. Mostly cloudy, with a low around 39. Northeast wind 6 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
A chance of rain before 5pm. Partly sunny, with a high near 50. West wind around 6 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Areas of frost after 4am. Mostly clear, with a low around 35. North northwest wind 5 to 13 mph, with gusts as high as 20 mph.
Areas of frost before 9am. Sunny, with a high near 59.
Mostly clear, with a low around 39.
Sunny, with a high near 65.
Clear, with a low around 43.
Sunny, with a high near 68.
Clear, with a low around 44.
Sunny, with a high near 70.
Mostly clear, with a low around 46.
Sunny, with a high near 71.
Butt Valley Reservoir currently reports 62°F with wind velocity near 14 mph from the SW. Atmospheric forecasts and 24-hour hour-by-hour wind timelines are updated hourly from the National Weather Service gridpoint matching the lake's coordinates.
At Butt Valley Reservoir and surrounding mountain valleys, diurnal heating of the surrounding terrain causes strong thermal pressure differentials known locally as afternoon breezes (such as the Washoe Zephyr at Lake Tahoe). Wind speeds typically peak between 1:00 PM and 5:00 PM before calming near sunset.
For stand-up paddleboarding (SUP), canoeing, and light kayaks, winds under 7 mph (light breeze) offer the safest, glassiest surface conditions. Between 8–14 mph, small wavelets develop, suitable for sailboats and powerboats. Winds exceeding 15 mph create steep whitecaps and rapid drift; winds over 21 mph warrant small craft warnings.
All weather and wind telemetry is fetched directly from the National Weather Service (NOAA - WFO STO) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Butt Valley Reservoir without artificial smoothing or third-party estimates.
Yes. Live hydrological sensor readings, 30-day elevation histories, full-pool benchmarks, and USGS station provenance are available on our dedicated Butt Valley Reservoir Water Level & Temperature page.
View Butt Valley Reservoir Water Level & Temperature →