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Official National Weather Service (NWS) point forecast and real-time wind conditions for Diamond Valley 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 65°F
Peak gusts: 15 mph · Lake surface chop expected
Humidity: 25% · Barometer: 29.83 inHg
USGS water monitoring available for Diamond Valley Lake.
Good for boating (75/100), from 4 available inputs. Supporting this: No active official alerts for this lake. 0% chance of precipitation. 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 (79/100), from 5 available inputs. Supporting this: 0% chance of precipitation. Afternoon hours (17:00 local). 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 kayaking (73/100), from 5 available inputs. Supporting this: No active official alerts for this lake. 0% chance of precipitation. 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 |
|---|---|---|---|---|---|---|
| 5 PM | 90°F | 15 mph | SW | ⚡ 23 mph | 0% | Sunny |
| 6 PM | 85°F | 10 mph | S | ⚡ 20 mph | 0% | Clear |
| 7 PM | 80°F | 10 mph | S | ⚡ 15 mph | 0% | Clear |
| 8 PM | 77°F | 5 mph | S | ⚡ 9 mph | 0% | Clear |
| 9 PM | 74°F | 5 mph | S | ⚡ 8 mph | 0% | Clear |
| 10 PM | 73°F | 5 mph | S | ⚡ 8 mph | 0% | Clear |
| 11 PM | 71°F | 5 mph | S | ⚡ 8 mph | 0% | Partly Cloudy |
| 12 AM | 70°F | 0 mph | — | ⚡ 6 mph | 0% | Partly Cloudy |
| 1 AM | 69°F | 0 mph | — | ⚡ 6 mph | 0% | Partly Cloudy |
| 2 AM | 68°F | 0 mph | — | ⚡ 7 mph | 0% | Mostly Cloudy |
| 3 AM | 67°F | 0 mph | — | ⚡ 7 mph | 0% | Mostly Cloudy |
| 4 AM | 67°F | 0 mph | — | ⚡ 1 mph | 0% | Mostly Cloudy |
| 5 AM | 67°F | 0 mph | — | ⚡ 7 mph | 0% | Cloudy |
| 6 AM | 65°F | 0 mph | — | ⚡ 7 mph | 0% | Cloudy |
| 7 AM | 66°F | 0 mph | — | ⚡ 6 mph | 0% | Cloudy |
| 8 AM | 68°F | 0 mph | — | ⚡ 1 mph | 0% | Cloudy |
| 9 AM | 71°F | 0 mph | — | ⚡ 1 mph | 0% | Cloudy |
| 10 AM | 75°F | 0 mph | — | ⚡ 7 mph | 0% | Cloudy |
| 11 AM | 78°F | 5 mph | SW | ⚡ 9 mph | 4% | Cloudy |
| 12 PM | 80°F | 5 mph | SW | ⚡ 12 mph | 4% | Cloudy |
| 1 PM | 82°F | 5 mph | SW | ⚡ 12 mph | 4% | Cloudy |
| 2 PM | 84°F | 15 mph | SW | ⚡ 21 mph | 4% | Mostly Cloudy |
| 3 PM | 83°F | 10 mph | SW | ⚡ 18 mph | 4% | Mostly Cloudy |
| 4 PM | 83°F | 10 mph | SW | ⚡ 17 mph | 4% | 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 94. Southwest wind around 15 mph, with gusts as high as 25 mph.
Partly cloudy, with a low around 64. South wind 0 to 10 mph, with gusts as high as 20 mph.
A chance of rain showers after 5pm. Cloudy, with a high near 85. Southwest wind 0 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Rain showers. Cloudy, with a low around 62. Southeast wind 0 to 5 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Rain showers. Cloudy, with a high near 72. South wind 0 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Rain showers. Cloudy, with a low around 53. Chance of precipitation is 90%.
Rain showers. Mostly cloudy, with a high near 64.
Rain showers likely. Mostly cloudy, with a low around 49.
A chance of rain showers before 5pm. Mostly sunny, with a high near 69.
Mostly clear, with a low around 49.
Sunny, with a high near 78.
Clear, with a low around 54.
Sunny, with a high near 84.
Clear, with a low around 58.
Diamond Valley Lake currently reports 88°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 Diamond Valley 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 SGX) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Diamond Valley 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 Diamond Valley Lake Water Level & Temperature page.
View Diamond Valley Lake Water Level & Temperature →