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Official National Weather Service (NWS) point forecast and real-time wind conditions for Castaic Lake (California). 24-hour hour-by-hour wind timelines, peak gusts, watercraft recreation safety thresholds, and 7-day marine outlook.
Today: High 90°F · Low 63°F
Peak gusts: 13 mph · Lake surface chop expected
Humidity: 22% · Barometer: 29.83 inHg
USGS water monitoring available for Castaic Lake.
Good for boating (85/100), from 4 available inputs. Supporting this: No active official alerts for this lake. Wind 10 mph from the south-southwest. 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 (78/100), from 5 available inputs. Supporting this: Wind 10 mph from the south-southwest. 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 kayaking (84/100), from 5 available inputs. Supporting this: Wind 10 mph from the south-southwest. 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. Supporting this: No active official alerts for this lake. Air temperature 90°F. Not available from a verified source for this lake: water temperature.
| Time | Air Temp | Wind (mph) | Direction | Peak Gusts | Rain Chance | Sky & Conditions |
|---|---|---|---|---|---|---|
| 1 PM | 90°F | 10 mph | SW | ⚡ 17 mph | 0% | Sunny |
| 2 PM | 90°F | 15 mph | SW | ⚡ 18 mph | 0% | Sunny |
| 3 PM | 89°F | 15 mph | SW | ⚡ 18 mph | 0% | Sunny |
| 4 PM | 86°F | 15 mph | SW | ⚡ 18 mph | 0% | Sunny |
| 5 PM | 82°F | 10 mph | SW | ⚡ 17 mph | 0% | Sunny |
| 6 PM | 76°F | 10 mph | SW | ⚡ 17 mph | 0% | Clear |
| 7 PM | 68°F | 10 mph | SW | ⚡ 17 mph | 0% | Clear |
| 8 PM | 66°F | 10 mph | SW | ⚡ 12 mph | 0% | Clear |
| 9 PM | 66°F | 10 mph | SW | ⚡ 12 mph | 0% | Clear |
| 10 PM | 65°F | 10 mph | SW | ⚡ 12 mph | 0% | Clear |
| 11 PM | 65°F | 5 mph | S | ⚡ 5 mph | 1% | Mostly Clear |
| 12 AM | 64°F | 5 mph | S | ⚡ 5 mph | 1% | Mostly Clear |
| 1 AM | 64°F | 5 mph | S | ⚡ 5 mph | 1% | Mostly Clear |
| 2 AM | 64°F | 5 mph | SW | ⚡ 5 mph | 1% | Mostly Clear |
| 3 AM | 63°F | 5 mph | SW | ⚡ 5 mph | 1% | Mostly Clear |
| 4 AM | 64°F | 5 mph | SW | ⚡ 5 mph | 1% | Mostly Clear |
| 5 AM | 66°F | 5 mph | S | ⚡ 5 mph | 1% | Mostly Cloudy |
| 6 AM | 67°F | 5 mph | S | ⚡ 5 mph | 1% | Mostly Cloudy |
| 7 AM | 63°F | 5 mph | S | ⚡ 5 mph | 1% | Mostly Cloudy |
| 8 AM | 70°F | 5 mph | SW | ⚡ 8 mph | 1% | Mostly Cloudy |
| 9 AM | 72°F | 5 mph | SW | ⚡ 8 mph | 1% | Mostly Cloudy |
| 10 AM | 74°F | 5 mph | SW | ⚡ 8 mph | 1% | Mostly Cloudy |
| 11 AM | 76°F | 10 mph | SW | ⚡ 17 mph | 1% | Mostly Cloudy |
| 12 PM | 78°F | 10 mph | SW | ⚡ 17 mph | 1% | Mostly Cloudy |
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.
Sunny, with a high near 89. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Sunny, with a high near 90. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Partly cloudy, with a low around 63. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
A slight chance of rain showers after 5pm. Mostly cloudy, with a high near 80. South southwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
A chance of rain showers. Cloudy, with a low around 61. Southwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of rain showers. Mostly cloudy, with a high near 71. West southwest wind 5 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
Rain showers likely. Mostly cloudy, with a low around 50. Chance of precipitation is 70%.
Rain showers likely. Mostly cloudy, with a high near 61.
A chance of rain showers. Partly cloudy, with a low around 46.
A slight chance of rain showers before 11am. Sunny, with a high near 70.
Mostly clear, with a low around 48.
Sunny, with a high near 77.
Clear, with a low around 53.
Sunny, with a high near 80.
Castaic Lake currently reports 90°F with wind velocity near 12 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 Castaic Lake 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 LOX) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Castaic Lake 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 Castaic Lake Water Level & Temperature page.
View Castaic Lake Water Level & Temperature →