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Official National Weather Service (NWS) point forecast and real-time wind conditions for Harry S. Truman Lake (Missouri). 24-hour hour-by-hour wind timelines, peak gusts, watercraft recreation safety thresholds, and 7-day marine outlook.
Today: High 89°F · Low 63°F
Peak gusts: 13 mph · Lake surface chop expected
Humidity: 42% · Barometer: 30.11 inHg
USGS water monitoring available for Harry S. Truman Lake.
Excellent for boating (93/100), from 4 available inputs. Supporting this: Wind 6 mph from the southwest. No active official alerts for this lake. 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 (83/100), from 5 available inputs. Supporting this: Wind 6 mph from the 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.
Excellent for kayaking (92/100), from 5 available inputs. Supporting this: Wind 6 mph from the southwest. Gusts to 13 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. Air temperature 87°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 | 87°F | 6 mph | SW | ⚡ 13 mph | 0% | Sunny |
| 2 PM | 88°F | 6 mph | S | ⚡ 13 mph | 0% | Sunny |
| 3 PM | 89°F | 6 mph | S | ⚡ 12 mph | 0% | Sunny |
| 4 PM | 89°F | 6 mph | S | ⚡ 12 mph | 0% | Sunny |
| 5 PM | 88°F | 5 mph | S | ⚡ 10 mph | 0% | Sunny |
| 6 PM | 86°F | 2 mph | S | ⚡ 7 mph | 0% | Clear |
| 7 PM | 82°F | 1 mph | S | ⚡ 7 mph | 0% | Clear |
| 8 PM | 76°F | 2 mph | S | ⚡ 8 mph | 0% | Clear |
| 9 PM | 74°F | 2 mph | S | ⚡ 9 mph | 0% | Clear |
| 10 PM | 72°F | 3 mph | S | ⚡ 12 mph | 0% | Clear |
| 11 PM | 71°F | 3 mph | S | ⚡ 12 mph | 0% | Clear |
| 12 AM | 70°F | 3 mph | S | ⚡ 10 mph | 0% | Clear |
| 1 AM | 69°F | 3 mph | S | ⚡ 10 mph | 0% | Clear |
| 2 AM | 68°F | 2 mph | S | ⚡ 10 mph | 0% | Clear |
| 3 AM | 67°F | 2 mph | S | ⚡ 9 mph | 0% | Clear |
| 4 AM | 65°F | 2 mph | S | ⚡ 9 mph | 0% | Clear |
| 5 AM | 65°F | 2 mph | S | ⚡ 8 mph | 0% | Clear |
| 6 AM | 63°F | 2 mph | SE | ⚡ 8 mph | 0% | Sunny |
| 7 AM | 63°F | 2 mph | SE | ⚡ 8 mph | 0% | Sunny |
| 8 AM | 65°F | 2 mph | SE | ⚡ 8 mph | 0% | Sunny |
| 9 AM | 68°F | 3 mph | S | ⚡ 9 mph | 1% | Mostly Sunny |
| 10 AM | 74°F | 3 mph | S | ⚡ 9 mph | 1% | Mostly Sunny |
| 11 AM | 78°F | 3 mph | S | ⚡ 10 mph | 1% | Partly Sunny |
| 12 PM | 82°F | 3 mph | S | ⚡ 9 mph | 1% | Partly Sunny |
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. South wind around 6 mph.
Clear. Low around 63, with temperatures rising to around 65 overnight. South wind around 3 mph.
Mostly sunny. High near 87, with temperatures falling to around 85 in the afternoon. Southeast wind around 3 mph.
Mostly clear, with a low around 59. East wind 0 to 3 mph.
Sunny, with a high near 88. Southwest wind 0 to 6 mph.
Partly cloudy, with a low around 67.
Sunny, with a high near 91.
Mostly clear, with a low around 69.
Sunny, with a high near 87.
A chance of showers and thunderstorms after 7pm. Mostly clear, with a low around 66.
A chance of rain showers before 7am, then showers and thunderstorms likely. Mostly sunny, with a high near 84.
Showers and thunderstorms likely. Partly cloudy, with a low around 64.
Showers and thunderstorms likely. Partly sunny, with a high near 79.
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Harry S. Truman Lake currently reports 85°F with wind velocity near 8 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 Harry S. Truman 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 SGF) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Harry S. Truman 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 Harry S. Truman Lake Water Level & Temperature page.
View Harry S. Truman Lake Water Level & Temperature →