Harry S. Truman Reservoir

Harry S. Truman Reservoir

Warsaw, Benton County, MO
86.88mi²
712ft
Directions
Lake Information

Harry S Truman State Park, a natural paradise nestled in Benton County, Missouri, is a captivating destination that beckons travelers with its pristine waters, dramatic bluffs, and a symphony of vibrant summer and fall colors. This expansive park, spanning a sprawling 55,603 acres, occupies a picturesque peninsula, offering an array of recreational activities that cater to both outdoor enthusiasts and those seeking a tranquil getaway. One of the defining features of Harry S Truman State Park is its stunning clear waters, which serve as a pristine playground for a multitude of activities. The park boasts a marina that beckons boating enthusiasts, providing them with the perfect launch point for exploration on the expansive Harry S Truman Reservoir. Anglers will find ample opportunities for fishing, with the reservoir teeming with a variety of fish species. For those seeking respite from the summer heat or simply looking to unwind, the park offers a welcoming aquatic haven, catering to every kind of swimmer. Whether you prefer a leisurely dip in the refreshing waters or an invigorating swim, the park's natural swimming areas provide a refreshing escape. Harry S Truman State Park is not just a water lover's paradise; it also offers a wealth of terrestrial delights. Hiking trails meander through the open oak woodlands, leading adventurers to scenic vistas and encounters with abundant wildlife. Picnic areas dot the landscape, inviting families and friends to enjoy alfresco meals amidst the beauty of the great outdoors. Camping enthusiasts will find a home away from home within the park's campgrounds, where starlit nights and the soothing sounds of nature create a memorable experience. Whether you're seeking an active day of exploration or simply a serene retreat, Harry S Truman State Park offers the perfect setting for unforgettable outdoor adventures in the heart of Benton County, Missouri.

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Current Conditions

88°F
Feels like 87°F
Cloudy
Today's High
86°F
Today's Low
70°F

Water Temperature

82°F
Updated: (Jul 10)
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Latest Water Temperature Data: Current water temperature for Harry S. Truman Reservoir is 82° Fahrenheit - providing real-time thermal conditions for fishing, swimming, and water recreation planning.

Current Snapshot

Wind12 mph SSW (Gust 24 mph)
Pressure
29.76 inHg
Visibility22 mi
Humidity64%
Cloud Cover100%

Forecast: Saturday, Jul 12

Day 1 of 9

Hourly Insights

7 AM
72°
10 AM
78°
1 PM
84°
4 PM
86°

Temperature

High
86°F
Low
70°F

Precipitation

Chance84%
Amount0.31"
Typerain

Wind

3 mph
Avg Speed
Gusts up to
16 mph
CalmModerateStrong
Max Speed6 mph

Sun, Moon & UV

Sunrise11:00 AM
Sunset1:38 AM
Moon PhasewaningGibbous
Max UV Index10 (Very High)

Weather Forecast & Fishing Conditions at Harry S. Truman Reservoir

Today's weather at Harry S. Truman Reservoir features partly cloudy skies with temperatures ranging from 70°F to 86°F. Wind conditions will average 3 mph with gusts reaching up to 16 mph, creating excellent fishing conditions with calm waters. The UV index will reach 10 (Very High), and there's a 84% chance of precipitation. The current water temperature is 82°F (updated Jul 10), indicating that warm-water species like bass and panfish will be highly active. These conditions will significantly impact fish behavior and angling success throughout the day.

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July 3rd 2025

Weather Forecast

Saturday

86°F
70°F

Sunday

80°F
71°F

Monday

86°F
70°F

Tuesday

87°F
72°F

Wednesday

88°F
75°F

Thursday

87°F
73°F

Friday

85°F
72°F

Saturday

88°F
73°F

Sunday

90°F
76°F
Saturday - 7/12/2025
86°F
70°F
12am
73°F
82°F
29.88 hPa
6 mph
SW
G: 11 mph
2am
71°F
82°F
29.88 hPa
6 mph
SSW
G: 16 mph
4am
71°F
82°F
29.90 hPa
5 mph
SW
G: 12 mph
6am
71°F
82°F
29.90 hPa
4 mph
W
G: 7 mph
8am
73°F
82°F
29.94 hPa
3 mph
NW
G: 9 mph
10am
78°F
82°F
29.97 hPa
2 mph
WNW
G: 6 mph
12pm
82°F
82°F
29.97 hPa
3 mph
WNW
G: 6 mph
2pm
85°F
82°F
29.96 hPa
3 mph
W
G: 6 mph
4pm
86°F
82°F
29.93 hPa
4 mph
NW
G: 6 mph
6pm
85°F
82°F
29.92 hPa
1 mph
SSE
G: 2 mph
8pm
81°F
82°F
29.93 hPa
2 mph
ESE
G: 4 mph
10pm
77°F
82°F
29.97 hPa
4 mph
S
G: 8 mph

Water Temperature History

Trends for Harry S. Truman Reservoir

Current Temp

79°F

Measured on Jul 9

Latest recorded surface temperature.

Lowest in Period

33°F

On Jan 19

Coldest point in the Last 12 Months.

Average in Period

60°F

Typical temp during the Last 12 Months.

Temperature Trend: Last 12 Months

Surface temperature over the selected period.

Key Observations (Last 12 Months)

  • Warmest avg: July (82°F).
  • Coolest avg: February (34°F).
  • Rapid warming often occurs: March → April (+13°F).
  • Sharpest cooling trend: November → December (-17°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm0481216

Wind Direction

221°

Pressure

1012 mb

Cloud Cover

93%

Visibility

10 miles

Daily Pressure Forecast

SatSunMonTueWedThuFriSatSun0.008.8617.7226.5835.44
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Frequently Asked Questions About Harry S. Truman Reservoir

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