Chamberlain & Missouri River, SD

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Rest stop on Interstate 90 in Chamberlain, South Dakota

Today’s Forecast:

☁
65°F
High: 70° | Low: 59°
Current Temperature
Mostly Cloudy
Station: K9V9
Observed at: 8:15 pm CDT on 9/26/26
Wind: 5 mph | Humidity: 97%

Tonight:Areas of fog after 2am. Mostly cloudy. Low around 59, with temperatures rising to around 63 overnight. East wind 0 to 10 mph.
Sunday:Areas of fog before 11am. Mostly cloudy, with a high near 73. East northeast wind 0 to 10 mph.
Sunday Night:Mostly cloudy. Low around 58, with temperatures rising to around 61 overnight. East southeast wind 5 to 10 mph.

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Today’s Report:

⛵ Boating

Excellent
  100 /100

Excellent for boating. High near 73°F. Low rain risk (8%). Light wind (10 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Not Recommended 6/100
Not Recommended for boating. High near 74°F. High rain probability (71%). Windy conditions (20 mph). Thunderstorms forecast or possible.

⛺ Camping

Excellent
  100 /100

Excellent for camping. High near 73°F. Low rain risk (8%). Light wind (10 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Not Recommended 11/100
Not Recommended for camping. High near 74°F. High rain probability (71%). Breezy winds (20 mph). Thunderstorms forecast or possible.

🎪 Outdoor Events / Activities

Excellent
  100 /100

Excellent for outdoor events / activities. High near 73°F. Low rain risk (8%). Light wind (10 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Not Recommended 11/100
Not Recommended for outdoor events / activities. High near 74°F. High rain probability (71%). Breezy winds (20 mph). Thunderstorms forecast or possible.

🐟 Fishing

Excellent
  100 /100

Excellent for fishing. High near 73°F. Low rain risk (8%). Light wind (10 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Not Recommended 9/100
Not Recommended for fishing. High near 74°F. High rain probability (71%). Breezy winds (20 mph). Thunderstorms forecast or possible.

About Chamberlain

Chamberlain & Missouri River is a central river-town destination for boating, fishing, campgrounds, river overlooks, road-trip stops, and family travel days.

Make the Most of a Chamberlain & Missouri River Day

Build the day around river wind, storm timing, and how exposed you want the plan to be. Calm periods favor boating and shoreline time, while windy or stormy windows are better for town stops.

Weather Tips for Chamberlain & Missouri River

  • Missouri River wind, summer heat, lightning, and open shoreline exposure can change comfort and safety quickly.
  • Wind, waves, current, and lightning should guide water plans more than sunshine alone.
  • For campground days, check overnight lows, storm timing, wet ground, and how quickly shelter is available.
  • Have a shore-based backup ready when wind, waves, or storms make open water less comfortable.

Nearby Towns and Areas

This page can also be useful when planning outdoor time near:

  • Oacoma
  • Missouri River
  • Lake Francis Case
  • American Creek Recreation Area
  • Dignity of Earth and Sky
  • I-90 river crossing

Plan Around the Conditions

Use the forecast to choose the best version of Chamberlain & Missouri River rather than forcing one itinerary. Match wind, rain timing, temperature, storms, water conditions, trail surfaces, and road conditions to the activity that gives your group the most comfortable day.

7-Day Forecast for Chamberlain & Missouri River

☁
65°F
High: 70° | Low: 59°
Current Temperature
Mostly Cloudy
Station: K9V9
Observed at: 8:15 pm CDT on 9/26/26
Wind: 5 mph | Humidity: 97%
Sun 🌫
73° 58°
8%
Mon ☁
74° 59°
5%
Tue 🌧
71° 52°
90%
Wed ⛅
73° 52°
8%
Thu ⛅
68° 49°
6%
Fri 🌧
67° 49°
15%
Sat ⛅
64° --°
10%

7-Day High Temperature Trend

73° Sun 74° Mon 71° Tue 73° Wed 68° Thu 67° Fri 64° Sat

7-Day Low Temperature Trend

58° Sun 59° Mon 52° Tue 52° Wed 49° Thu 49° Fri 50° Sat

📊 7-Day Outdoor Outlook

Good Fair Poor 100 Sun 97 Mon 93 Tue 100 Wed 100 Thu 100 Fri 100 Sat
Forecast data from the National Weather Service  |  Last Updated: September 26, 2026 9:12 pm CDT