Harry S Truman Reservoir, MO

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Open water and wooded shoreline on the Tebo Creek arm of Harry S Truman Reservoir
Open water and wooded shoreline on the Tebo Creek arm of Harry S Truman Reservoir — Photo by James St. John, CC BY 2.0, via Wikimedia Commons.

Today’s Forecast:

❄
37°F
High: 40° | Low: 30°
Current Temperature
Light Snow
Station: KDMO
Observed at: 7:50 pm CST on 11/12/26
Wind: 7 mph | Humidity: 70%
Tonight:Clear, with a low around 30. Wind chill values as low as 31. North wind 1 to 5 mph.
Friday:Sunny. High near 47, with temperatures falling to around 45 in the afternoon. Wind chill values as low as 29. North wind 2 to 6 mph.
Friday Night:Clear, with a low around 26. Wind chill values as low as 27. North wind around 2 mph.
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Today’s Report:

🥾 Hiking

Good
  82 /100

Good for hiking. High near 47°F. Light wind (6 mph).

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 87/100
Ideal conditions for hiking. Comfortable temperature (high near 50°F), light wind, and clear forecast.

⛺ Camping

Excellent
  88 /100

Excellent for camping. High near 47°F. Light wind (6 mph).

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100
Ideal conditions for camping. Comfortable temperature (high near 50°F), light wind, and clear forecast.

⛵ Boating

Not Recommended
  23 /100

Not Recommended for boating. High near 47°F. Light wind (6 mph). Temperatures outside comfort limits (47°F).

  • Temp: Unfavorable weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Not Recommended 23/100
Not Recommended for boating. High near 50°F. Temperatures outside comfort limits (50°F).

🛶 Paddling

Not Recommended
  23 /100

Not Recommended for paddling. High near 47°F. Light wind (6 mph). Temperatures outside comfort limits (47°F).

  • Temp: Unfavorable weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Not Recommended 23/100
Not Recommended for paddling. High near 50°F. Temperatures outside comfort limits (50°F).

🐟 Fishing

Excellent
  85 /100

Excellent for fishing. High near 47°F. Light wind (6 mph).

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 89/100
Ideal conditions for fishing. Comfortable temperature (high near 50°F), light wind, and clear forecast.

About Harry S Truman Reservoir

This page connects the narrowed Benton County core around Warsaw, Long Shoal, Osage Bluff, marinas, ramps and campgrounds, where exposure and operating notices matter as much as the regional forecast.

Planning an Outing

A workable outing depends on pool level, releases, wind, lightning, ramp and campground closure. Match the forecast to the chosen access rather than assuming every component operates alike.

Destination-Specific Access

The page does not claim the reservoir’s entire multi-county shoreline; paddle plans belong in protected coves.

Weather Tips

  • Before camping at the narrowed Benton County core around Warsaw, Long Shoal, Osage Bluff, marinas, ramps and campgrounds, confirm loops, water service and gate hours with the managing agency.

Nearby Towns and Areas

  • Warsaw
  • Long Shoal
  • Osage Bluff
  • Truman Dam

Adjust the Day to the Forecast

Move to shore or a short protected trail when wind, waves, flow or access is unsuitable; otherwise, delay campsite setup until warned wind or lightning passes.

7-Day Forecast

❄
37°F
High: 40° | Low: 30°
Current Temperature
Light Snow
Station: KDMO
Observed at: 7:50 pm CST on 11/12/26
Wind: 7 mph | Humidity: 70%
Fri ☀
47° 26°
0%
Sat ☀
50° 30°
0%
Sun ⛅
52° 31°
3%
Mon ☀
55° 32°
0%
Tue ☀
58° 36°
0%
Wed ⛅
62° 46°
2%
Thu 🌧
65° --°
23%

7-Day High Temperature Trend

47° Fri 50° Sat 52° Sun 55° Mon 58° Tue 62° Wed 65° Thu

7-Day Low Temperature Trend

26° Fri 30° Sat 31° Sun 32° Mon 36° Tue 46° Wed 50° Thu

📊 7-Day Outdoor Outlook

Good Fair Poor 20 Fri 70 Sat 80 Sun 100 Mon 100 Tue 100 Wed 100 Thu
Forecast data from the National Weather Service  |  Last Updated: November 12, 2026 8:48 pm CST

Weather by Season

Winter

Cold spells make pool level more consequential, while a quick warmup can leave shaded ground icy and exposed ground soft.

Spring

New vegetation and saturated soil magnify ramp and campground closure; wait for the posted reopening instead of testing a closed route.

Summer

The heat index and ramp and campground closure deserve separate checks, especially when shade, water or rapid shelter is limited.

Fall

Cooler air improves comfort, but leaf cover and ramp and campground closure can hide changing footing or access restrictions.

Key Climate Data Points

  • Local climate: This local planning area has an annual average temperature near 55–58°F, receives about 40–46 inches of precipitation and records typically 10–18 inches.
  • Wettest season: Spring and early summer.
  • Driest season: Late summer or early fall.
  • Annual average temperature: Near 55–58°f.
  • Annual snowfall: Typically 10–18 inches.