Lewis and Clark Lake

Lewis and Clark Lake

Yankton, Yankton County, SD
48.44mi²
1198ft
Directions
Lake Information

Lewis and Clark Lake is a popular destination for outdoor enthusiasts who enjoy boating, fishing, and camping. Located along the Missouri River, the lake spans an impressive 25 miles and covers an area of 31,002 acres. Its location on the border of Nebraska and South Dakota makes it easily accessible to residents of both states. The lake is named after the famous explorers Meriwether Lewis and William Clark, who traveled through the area in 1804 as part of the Corps of Discovery expedition. Today, the lake serves as a recreational haven, attracting visitors from all over the country. Sailing enthusiasts, in particular, love Lewis and Clark Lake for its steady winds and expansive size. The lake is also home to a variety of fish species, including walleye, smallmouth bass, and catfish, making it a popular spot for anglers. Additionally, the lake's shoreline offers numerous camping and picnic areas, as well as hiking and biking trails. Overall, Lewis and Clark Lake is a must-visit destination for anyone looking to enjoy the great outdoors in the heart of the Midwest.

Read more

Current Conditions

80°F
Feels like 81°F
Cloudy
Today's High
83°F
Today's Low
70°F

Water Temperature

74°F
Updated: (Jul 18)
Sign in to contribute temps.

Latest Water Temperature Data: Current water temperature for Lewis and Clark Lake is 74° Fahrenheit - providing real-time thermal conditions for fishing, swimming, and water recreation planning.

Current Snapshot

Wind6 mph SE (Gust 13 mph)
Pressure
29.85 inHg
Visibility12 mi
Humidity78%
Cloud Cover100%

Forecast: Saturday, Jul 19

Day 1 of 9

Hourly Insights

7 AM
71°
51%
10 AM
75°
1 PM
79°
4 PM
82°

Temperature

High
83°F
Low
70°F

Precipitation

Chance66%
Amount0.35"
Typerain

Wind

6 mph
Avg Speed
Gusts up to
19 mph
CalmModerateStrong
Max Speed10 mph

Sun, Moon & UV

Sunrise11:09 AM
Sunset2:03 AM
Moon PhasewaningCrescent
Max UV Index7 (High)

Weather Forecast & Fishing Conditions at Lewis and Clark Lake

Today's weather at Lewis and Clark Lake features partly cloudy skies with temperatures ranging from 70°F to 83°F. Wind conditions will average 6 mph with gusts reaching up to 19 mph, creating excellent fishing conditions with calm waters. The UV index will reach 7 (High), and there's a 66% chance of precipitation. The current water temperature is 74°F (updated Jul 18), indicating that excellent conditions for bass and trout fishing. These conditions will significantly impact fish behavior and angling success throughout the day.

Lake Map Views

LakeMonster PRO

Try Premium Features

Find the fishing sweet spots! See detailed temperature readings throughout your lake.

No credit card required for preview

July 3rd 2025

Weather Forecast

Saturday

83°F
70°F

Sunday

83°F
67°F

Monday

88°F
71°F

Tuesday

91°F
74°F

Wednesday

91°F
75°F

Thursday

83°F
72°F

Friday

84°F
69°F

Saturday

87°F
70°F

Sunday

89°F
72°F
Saturday - 7/19/2025
83°F
70°F
12am
76°F
74°F
29.86 hPa
2 mph
SSE
G: 8 mph
2am
75°F
74°F
29.85 hPa
3 mph
SW
G: 11 mph
4am
74°F
74°F
29.84 hPa
3 mph
W
G: 7 mph
6am
71°F
74°F
29.85 hPa
4 mph
W
G: 9 mph
8am
73°F
74°F
29.87 hPa
4 mph
NNE
G: 9 mph
10am
75°F
74°F
29.89 hPa
7 mph
ENE
G: 11 mph
12pm
79°F
74°F
29.88 hPa
8 mph
ENE
G: 12 mph
2pm
81°F
74°F
29.88 hPa
9 mph
ENE
G: 13 mph
4pm
82°F
74°F
29.86 hPa
8 mph
ENE
G: 11 mph
6pm
82°F
74°F
29.85 hPa
8 mph
E
G: 11 mph
8pm
79°F
74°F
29.85 hPa
6 mph
E
G: 12 mph
10pm
74°F
74°F
29.88 hPa
6 mph
ENE
G: 13 mph

Water Temperature History

Trends for Lewis and Clark Lake

Current Temp

74°F

Measured on Jul 13

Latest recorded surface temperature.

Lowest in Period

33°F

On Jan 1

Coldest point in the Last 12 Months.

Average in Period

53°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: June (76°F).
  • Coolest avg: January (33°F).
  • Rapid warming often occurs: April → May (+21°F).
  • Sharpest cooling trend: September → October (-14°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm0481216

Wind Direction

149°

Pressure

1011 mb

Cloud Cover

88%

Visibility

9 miles

Daily Pressure Forecast

SatSunMonTueWedThuFriSatSun0.008.8617.7226.5835.44
Go Premium
Better lake days, better fishing, better you with LakeMonster Pro
Relaxing app background
LakeMonster App Icon
Get a 7 day free trial

Frequently Asked Questions About Lewis and Clark Lake

Get accurate, up-to-date information about conditions at Lewis and Clark Lake.