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Current Weather Conditions for MNRR Headquarters

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Lat: 42.869240724056176 Long: -97.38447149910834

Last updated:

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Current Weather Conditions on the 39-Mile District

Fort Randall, Niobrara

Hazardous Weather Conditions

Lat: 43.052833917627936 Long: -98.54324340820312

Last updated:

Current Conditions

Humidity
Wind Speed
Barometer
Dewpoint
Visibility
Wind Chill

More Weather Information on Weather.gov

Extended Graphical Forecast for This Location

Extended Text Forecast for This Location

 

Average Seasonal Weather Conditions

Winter

• Temperature often below freezing (32°F / 0°C)
• Ice and snow storms possible.
• Water temperatures below freezing by December.*

Spring/Fall

• Temperatures can range from 26°F to 83°F, although on average is around 45°F to the 60s (°F).
• Temperature very variable, drops rapidly after sunset.
• Cooler water temperatures. River use may require wet suit.*
• Fall is typically a little warmer than spring. Autumn foliage peaks in October, though temperature and weather events can affect the fall color change.

Summer

• Temperatures often reach 75°F to 85°F on average, but ranges from 50°F to the 90s (°F).
• Expect abundant sunshine especially in July through August.
• Thunderstorms are also most frequent between June and late August; can result in heavy downpours, hail, and high winds.
• Water temperatures between 60°F to mid-70s (°F).*

* A water temperature of between 70°F and 80°F is recommended for canoeing, kayaking, and other activities where you may get wet.

 

Rapid weather changes are common along the Missouri National Recreational River corridor. Variations from season to season and from year to year are great. Characteristics of the climate are hot summers and cold winters.

During the warm seasons, expect abundant sunshine especially in July through August. Average annual rainfall is 25 inches, of which about 80% falls from April through September.

Thunderstorms can be dangerous and visitors should be prepared for them, especially from June until late August.

• They are generally local in extent. Tornadoes strike occasionally.
• Hailstones up to golf ball size are not uncommon during severe thunderstorms.
• Storms come up suddenly, so boaters should always be prepared to seek cover and safety.

Winter Conditions

Winter snowfall averages 34 inches annually. High winds can turn even a moderate snowfall into road-blocking drifts and white-out conditions. When in the area, dial 511 for road conditions.

Wind

Wind is a constant on the Great Plains. Winds in April and May come from all points of the compass, with winds in excess of 50 mph not uncommon. The prevailing wind is from the south-southwest during the summer months. The average windspeed is highest in April at 14 mph.

For current forecasts and warnings, listen to NOAA Weather Radio on 162.500 MHZ in Yankton (KXI-21).

 

Temperature

Whether there is summer heat or winter chills, air temperature–as well as water temperature–is something visitors need to be aware of before heading out onto the river. Extended exposure to cold or heat can result in risks to your health and safety.

 

Hypothermia

• Hypothermia occurs when the body is at a dangerously low temperature and is caused by extended exposure to very cold temperatures. Hypothermia is not just an issue for the winter. The water temperature is often much colder than the air temperature, and even on a warmer day the river water can still be very cold.
• If you suspect you or someone else may have hypothermia, move them to a warm, dry place with shelter. Rest and replace any wet clothing with dry clothing. Have them drink something warm. Contact a medical professional if their condition does not improve.

Symptoms of Hypothermia

 

Heat-related Illness

• Visitors should also be cautious of heat exhaustion and heat stroke. These conditions are caused by exposure to high temperatures and humidity, especially when combined with strenuous physical activity. Always stay hydrated, avoid extended exposure to the sun, and stay cool in hot conditions.
• Heat exhaustion can be treated by moving to a cooler place, drinking water, and loosening clothes. However, severe heat exhaustion can lead to a heat stroke. Call 911 immediately if you suspect you or someone else may have heat stroke and move the person to a cooler place while you wait for help to arrive.

Learn more about the warning signs of heat-related illnesses.

Symptoms of Heat Exhaustion

Symptoms of Heat Stroke

 

 

Severe Weather

Thunderstorms

Storms come up quickly in summer on the Great Plains. These often include lightning, hail and heavy downpours. Check an hourly weather forecast and radar before going out on the water, and be alert for changing weather. If you hear thunder or see lightning while on the water, immediately seek cover on shore away from the water.

Winter Conditions

Winter snowfall averages 34 inches annually. High winds can turn even a moderate snowfall into road-blocking drifts and white-out conditions. When in the area, dial 511 for road conditions.

Wind

Wind is a constant on the Great Plains. Winds in April and May come from all points of the compass, with winds in excess of 50 mph not uncommon. The prevailing wind is from the south-southwest during the summer months. The average wind speed is highest in April at 14 mph. If you are planning a paddling or boating trip on the river, be aware of the wind speeds forecasted. We do not recommend canoeing or kayaking when wind speeds above 15 mph as they can create choppy waves and white-caps that make paddling more hazardous and difficult.