Our Proprietary 10-Day Forecast

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Current warnings over Lake Saint Louis, Missouri
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<p>Warnings from F5Weather</a></div>

United States weather warnings are issued by various organizations under NOAA. Most from the National Weather Service, but also Storm Prediction Center and National Hurricane Center.

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Current radar over Lake Saint Louis, Missouri red dot
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<p>Live radar from F5Weather</a></div>

Our radar is based off of US NEXRAD and Canadian weather radar sites through the quality controlled MRMS system. It compiles various sources for radar data and filters out erroneous returns such as sun spikes and ground clutter. We then colorize the precipitation based on our methods for determining precipitation type. Rain is in shades of green, mixed precipitation and freezing rain in shades of pink and snow is in shades of blue.

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Current satellite over Lake Saint Louis, Missouri red dot
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<p>Live satellite from F5Weather</a></div>

Our satellite is from the GOES-16. It is color enhanced by using a geocolor terrain background during the day and black marble city lights at night. The daytime satellite data is Visible satellite imagery, and nighttime uses Infrared bands. The bluish clouds are fog and low cloud. The whiteest clouds are the coldest, highest cloud tops.

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Current surface weather map around St. Charles County, MO

This surface map is from the HRRR computer model. It is a 1-hour forecast, updated hourly, which is a good estimate of the current surface conditions. This map shows the current high and low pressure centers, pressure isobar contours, wind streamlines and thickness contours. It also shows the currently depicted preciptiation estimates, although this should not be a substitute for actual live radar. The purple dashed contour is the 5400m thickness line, which is often a good proxy for the rain/snow line.

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Temperatures right now near Lake Saint Louis, Missouri

This is the latest surface temperatures as depicted by the HRRR computer model, updated hourly. Although these are not actual observations, this model is a very good representation of current conditions as it factors in observations, terrain and physics to give you more detailed temperatures in areas that do not have reporting weather stations. For the latest reports at specific locations, like in Lake Saint Louis, MO please see our current conditions data on the left and right side of this page, or go to our current conditions page.

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Surface wind speed map over Lake Saint Louis, MO

This map shows the latest HRRR computer model winds. This depiction of the current wind directions and speeds is an estimate from the computer model. For actual observations in Lake Saint Louis, MO, see the current conditions data on the left and right side of this page, or go to our current conditions page.

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Regional 24 hour rainfall expected near Lake Saint Louis, Missouri

This is a forecast of the amount of precipitation expected over the next 24 hours from the HRRR weather forecast model. This is only one forecast depiction, and you should check other models to get a better idea of what may happen. You can view this and other models in more detail on our main weather forecast maps page. There, you will also be able to look at forecasts beyond just 24 hours and look at forecasts out to as far as 16 days.

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Area snowfall accumulation expected around St. Charles County, Missouri

This is snowfall forecast, with amounts anticipated in the next 24 hours. This guidance is from the HRRR weather model. For more model forecasts out to 16 days, visit our main weather forecast maps page.

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These are Convective Outlooks from the Storm Prediction Center. Click to see Days 1-3 broken down into Tornado, Wind and Hail threats, as well as days 5-8 outlooks.

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Atlantic Hurricane and Tropical Storm Tracking Map
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<p>Hurricane Tracking from F5Weather</a></div>

Our hurricane tracking map monitors for any current or forecast tropical disturbances in the Atlantic. (See our Pacific Hurricane Tracker) Various hurricane models will draw a 'spaghetti plot' in the Atlantic Basin when a disturbance is forecast or exists, showing the system's forecast track. Once a storm has developed, the National Hurricane Center will forecast their official track. This will show up on the map along with the storm's current intensity, track and name. We will also plot some of the storm's vitals and of course the spaghetti plots from the models along with the NHC forecast track will give you an idea of where it's heading, and its forecast intensity with time.

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To view the latest computer models, visit f5wx.com for access to the weather maps and guidance that meteorologists use to make their forecasts.
 
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  • American GFS
  • Canadian GDPS GEM
  • German DWD ICON
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  • GEFS, GEPS, MOGREPS & European Ensembles
  • Probabilities & Averages
  • 3-Ensemble Mean & more!
View Skew-T soundings, textual data tables for your location, and of course maps! Weather forecast maps of the basics like temperature, wind, pressure, humidity, dew point, cloud cover, simulated radar, travel weather, rainfall and snow are available. More advanced users can also get use out of our severe weather & tornado threat maps, as well as upper air & shear graphics.
 
See the latest forecast data as the models update.
 
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Climate Summary
(made with AI, use with caution)
Lake Saint Louis, Missouri

Climate Summary

Lake Saint Louis, Missouri has a humid subtropical climate, characterized by hot, humid summers and cold, dry winters.

Temperature

    •   Average annual temperature: 55.4°F (13.0°C)
    •   Average summer temperature (June-August): 78.4°F (25.8°C)
    •   Average winter temperature (December-February): 33.0°F (0.6°C)
    •   Record high temperature: 115°F (46.1°C)
    •   Record low temperature: -24°F (-31.1°C)

Precipitation

    •   Average annual precipitation: 41.9 inches (1064 mm)
    •   Average snowfall: 18.9 inches (48 cm)
    •   Most precipitation occurs in May and June
    •   Least precipitation occurs in January and February

Humidity

    •   Average annual relative humidity: 68%
    •   Highest humidity in July and August
    •   Lowest humidity in January and February

Wind

    •   Prevailing wind direction: South
    •   Average wind speed: 8.6 mph (13.8 km/h)

Sunshine

    •   Average annual sunshine hours: 2,460
    •   Most sunshine in July and August
    •   Least sunshine in December and January

Severe Weather

    •   Lake Saint Louis is located in an area prone to severe thunderstorms, tornadoes, and hail.
    •   The most common severe weather events occur in the spring and summer months.

Climate Change Impacts

    •   Climate change is expected to bring more extreme weather events to Lake Saint Louis, including heavier rainfall, more intense heat waves, and stronger storms.
    •   Rising temperatures may also lead to changes in plant and animal life in the area.

Facts & Historical Information
(made with AI, use with caution)
Natural History

    •   Lake Saint Louis is a man-made reservoir created in 1954 by damming the Missouri River.

    •   The lake is home to a diverse aquatic ecosystem, including over 60 species of fish and numerous bird species.

    •   The surrounding area is a mix of forests, wetlands, and prairies, providing habitat for a variety of wildlife.

Science

    •   The lake has been the site of numerous scientific studies on aquatic ecology, water quality, and fish populations.

    •   It is also a popular destination for recreational fishing and boating.

Personalities

    •   Charles Lindbergh, the famous aviator, lived near Lake Saint Louis in the 1930s.

    •   The lake is named after Louis IX, King of France, who was a patron of the Crusades.

Tourist Attractions
1.August A. Busch Memorial Conservation Area:

A sprawling nature preserve with hiking trails, fishing lakes, and a visitor center. Visitors can explore diverse habitats, including forests, wetlands, and prairies.

2.Six Flags St. Louis:

A popular amusement park with thrilling rides, water slides, and live entertainment. It offers a wide range of attractions for all ages, including roller coasters, water rides, and family-friendly shows.

3.The Butterfly House:

An indoor botanical garden dedicated to butterflies. Visitors can stroll through lush gardens filled with thousands of butterflies from around the world, and learn about their life cycle and habitat.

Nearby Cities:

Dardenne Prairie, MO
Wentzville, MOSaint Paul, MO
Weldon Spring, MOCottleville, MO
Saint Peters, MOWright City, MO
Moscow Mills, MOChesterfield, MO
Winfield, MOWildwood, MO
Clarkson Valley, MOSaint Charles, MO
Troy, MOEllisville, MO
Ballwin, MOMarthasville, MO
Columbia, MO
Springfield, ILDecatur, IL
Florissant, MOJefferson City, MO
Belleville, ILQuincy, IL
Oakville, MOUniversity City, MO
Upper Alton, ILGranite City, IL
Mehlville, MO