Lake St. Louis, MO weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Lake St. Louis now
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Lake St. Louis weather by the hour
Lake St. Louis weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Lake St. Louis.
This week in Lake St. Louis
Sunrise, sunset and moon in Lake St. Louis
What is the weather usually like in Lake St. Louis?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 88°F average high
- Januarycoldest month · 21°F average low
- 44.4 inprecipitation per year · 1,128 mm
- 13.5 insnowfall per year · 34 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Lake St. Louis: May–June and September–October, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station WELDON SPRING NWS, MO US (USC00238805), adjusted for the elevation of Lake St. Louis.
Lake St. Louis weather month by month
Sunrise and sunset in Lake St. Louis through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:18 AM | 5:07 PM | 9 h 48 min |
| February | 6:52 AM | 5:42 PM | 10 h 49 min |
| March | 7:12 AM | 7:11 PM | 11 h 58 min |
| April | 6:24 AM | 7:41 PM | 13 h 16 min |
| May | 5:49 AM | 8:09 PM | 14 h 20 min |
| June | 5:36 AM | 8:31 PM | 14 h 55 min |
| July | 5:49 AM | 8:29 PM | 14 h 39 min |
| August | 6:15 AM | 7:59 PM | 13 h 43 min |
| September | 6:43 AM | 7:12 PM | 12 h 29 min |
| October | 7:11 AM | 6:26 PM | 11 h 14 min |
| November | 6:44 AM | 4:51 PM | 10 h 6 min |
| December | 7:12 AM | 4:43 PM | 9 h 31 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in Lake St. Louis?
Lake St. Louis has a hot-summer humid continental climate. The warmest month is July, with an average high of 88°F (31°C), and the coldest is January, with average lows of 21°F (-6°C).
It gets about 44.4 inches (1,128 mm) of precipitation a year. The wettest month is May and the driest is February. Snow is common: about 14 inches fall in an average year.
The best time to visit Lake St. Louis is May–June and September–October. At 564 ft of elevation, nights are mild most of the year. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
More about Lake St. Louis
Weather in towns near Lake St. Louis
Questions about the weather in Lake St. Louis
What is the hottest month in Lake St. Louis?
July, with an average high of 88°F (31°C).
What is the coldest month in Lake St. Louis?
January, with an average low of 21°F (-6°C).
How much does it rain in Lake St. Louis?
About 44.4 inches (1,128 mm) a year; the wettest month is May.
Does it snow in Lake St. Louis?
Yes, about 14 inches of snow fall in an average year.
When is the best time to visit Lake St. Louis?
May–June and September–October, when temperatures are most pleasant and rainy days are fewer.
What climate does Lake St. Louis have?
Hot-summer humid continental (Köppen Dfa).
What is the weather like in Lake St. Louis in November?
Highs average 56°F and lows 35°F, with about 3.7 inches of precipitation.
What time is sunrise in Lake St. Louis?
Around 6:44 AM in mid-November, and sunset around 4:51 PM. Today’s exact times are shown above.
Where does this Lake St. Louis weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Lake St. Louis.
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