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Official National Weather Service (NWS) point forecast and real-time wind conditions for Lake Saint Louis (Missouri). 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: 3 mph · Lake surface chop expected
Humidity: 66% · Barometer: 29.97 inHg
USGS water monitoring available for Lake Saint Louis.
Excellent for boating (98/100), from 4 available inputs. Supporting this: Wind 3 mph from the south. 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.
Excellent for fishing (91/100), from 5 available inputs. Supporting this: Wind 3 mph from the south. Morning hours (09:00 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.
Excellent for kayaking (98/100), from 5 available inputs. Supporting this: Wind 3 mph from the south. 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. Not available from a verified source for this lake: water temperature.
| Time | Air Temp | Wind (mph) | Direction | Peak Gusts | Rain Chance | Sky & Conditions |
|---|---|---|---|---|---|---|
| 9 AM | 64°F | 3 mph | S | ⚡ 6 mph | 0% | Sunny |
| 10 AM | 73°F | 6 mph | S | ⚡ 12 mph | 0% | Sunny |
| 11 AM | 78°F | 7 mph | S | ⚡ 13 mph | 1% | Sunny |
| 12 PM | 83°F | 8 mph | S | ⚡ 14 mph | 1% | Sunny |
| 1 PM | 87°F | 8 mph | S | ⚡ 14 mph | 1% | Sunny |
| 2 PM | 88°F | 8 mph | S | ⚡ 14 mph | 1% | Sunny |
| 3 PM | 89°F | 8 mph | S | ⚡ 14 mph | 1% | Sunny |
| 4 PM | 90°F | 8 mph | S | ⚡ 13 mph | 1% | Sunny |
| 5 PM | 88°F | 7 mph | S | ⚡ 13 mph | 1% | Sunny |
| 6 PM | 85°F | 6 mph | S | ⚡ 12 mph | 1% | Clear |
| 7 PM | 81°F | 6 mph | SE | ⚡ 12 mph | 1% | Clear |
| 8 PM | 74°F | 6 mph | SE | ⚡ 13 mph | 0% | Clear |
| 9 PM | 72°F | 6 mph | S | ⚡ 12 mph | 0% | Clear |
| 10 PM | 70°F | 5 mph | S | ⚡ 12 mph | 0% | Clear |
| 11 PM | 68°F | 5 mph | S | ⚡ 10 mph | 0% | Clear |
| 12 AM | 66°F | 5 mph | S | ⚡ 9 mph | 0% | Clear |
| 1 AM | 65°F | 3 mph | S | ⚡ 9 mph | 0% | Clear |
| 2 AM | 63°F | 3 mph | S | ⚡ 8 mph | 1% | Mostly Clear |
| 3 AM | 62°F | 3 mph | S | ⚡ 8 mph | 1% | Mostly Clear |
| 4 AM | 61°F | 3 mph | SE | ⚡ 7 mph | 1% | Mostly Clear |
| 5 AM | 60°F | 2 mph | SE | ⚡ 7 mph | 1% | Partly Cloudy |
| 6 AM | 59°F | 2 mph | SE | ⚡ 6 mph | 1% | Mostly Sunny |
| 7 AM | 59°F | 2 mph | SE | ⚡ 6 mph | 0% | Partly Sunny |
| 8 AM | 61°F | 2 mph | SE | ⚡ 6 mph | 0% | 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 90. South wind 1 to 8 mph.
Mostly clear, with a low around 59. South wind 2 to 6 mph.
Mostly cloudy, with a high near 82. Southeast wind 2 to 7 mph.
Mostly cloudy, with a low around 56. East wind 1 to 6 mph.
Sunny, with a high near 84. Northwest wind around 2 mph.
Mostly clear, with a low around 61.
Sunny, with a high near 93.
Mostly clear, with a low around 69.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 89. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms. Mostly clear, with a low around 64. Chance of precipitation is 20%.
A chance of rain showers. Mostly sunny, with a high near 83. Chance of precipitation is 40%.
A chance of rain showers before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
A chance of rain showers before 7am, then a chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.
Lake Saint Louis currently reports 59°F with wind velocity near 1 mph from the NE. 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 Lake Saint Louis 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 LSX) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Lake Saint Louis 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 Lake Saint Louis Water Level & Temperature page.
View Lake Saint Louis Water Level & Temperature →