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Lake St. Louis, MO

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Lake St. Louis, MO Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

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Winter Center
Today Hourly

Daily

 Radar MinuteCast® Monthly Air Quality Health & Activities
Air Quality Alert

August 1 - September 14

Fri 8/1

81° /58°
1%
Partly cloudy; smoke from wildfires can create reduced air quality
alerts

Air Quality Alert

2:54 PM Thursday - 12:00 AM Saturday

RealFeel®58°

Cloud Cover27%

WindNE 5 mph

Wind Gusts13 mph

Sat 8/2

79° /56°
1%
Hazy sunshine; smoke from wildfires can create reduced air quality

RealFeel®85°

RealFeel Shade™76°

Max UV Index10 (Very High)

WindNE 7 mph

Sun 8/3

80° /60°
2%
Hazy sunshine

RealFeel®87°

RealFeel Shade™77°

Max UV Index10 (Very High)

WindNE 6 mph

Mon 8/4

82° /64°
8%
Nice with intervals of clouds and sun

RealFeel®91°

RealFeel Shade™83°

Max UV Index8 (Very High)

WindNE 5 mph

Tue 8/5

85° /66°
40%
Partly sunny with widely separated thunderstorms

RealFeel®97°

RealFeel Shade™88°

Max UV Index9 (Very High)

WindNE 4 mph

Wed 8/6

86° /66°
6%
Mostly sunny and humid

RealFeel®100°

RealFeel Shade™90°

Max UV Index9 (Very High)

WindE 2 mph

Thu 8/7

89° /68°
8%
Rather cloudy and humid

RealFeel®103°

RealFeel Shade™93°

Max UV Index9 (Very High)

WindSE 4 mph

Fri 8/8

91° /71°
40%
Partly sunny with a thunderstorm in spots in the afternoon

RealFeel®100°

RealFeel Shade™93°

Max UV Index9 (Very High)

WindS 5 mph

Sat 8/9

89° /70°
38%
Clouds and sun with a strong thunderstorm in spots

RealFeel®93°

RealFeel Shade™88°

Max UV Index8 (Very High)

WindS 7 mph

Sun 8/10

88° /68°
40%
A thunderstorm on the prowl in the morning; otherwise, partly sunny

RealFeel®94°

RealFeel Shade™91°

Max UV Index9 (Very High)

WindSW 7 mph

Mon 8/11

91° /70°
2%
Mostly sunny and humid

RealFeel®104°

RealFeel Shade™97°

Max UV Index9 (Very High)

WindNNW 5 mph

Tue 8/12

87° /68°
56%
Mostly cloudy; a little morning rain followed by a thunderstorm in spots in the afternoon

RealFeel®93°

RealFeel Shade™91°

Max UV Index3 (Moderate)

WindSW 1 mph

Wed 8/13

85° /66°
70%
Rain and a thunderstorm

RealFeel®94°

RealFeel Shade™88°

Max UV Index6 (High)

WindSE 2 mph

Thu 8/14

88° /67°
20%
Sunny

RealFeel®94°

RealFeel Shade™87°

Max UV Index9 (Very High)

WindENE 5 mph

Fri 8/15

86° /69°
20%
Mostly sunny

RealFeel®95°

RealFeel Shade™87°

Max UV Index9 (Very High)

WindENE 5 mph

Sat 8/16

87° /69°
25%
Partly sunny and humid

RealFeel®100°

RealFeel Shade™94°

Max UV Index9 (Very High)

WindSSE 2 mph

Sun 8/17

86° /68°
25%
Humid with intervals of clouds and sunshine

RealFeel®94°

RealFeel Shade™91°

Max UV Index3 (Moderate)

WindSE 2 mph

Mon 8/18

90° /70°
25%
Humid with times of clouds and sun

RealFeel®97°

RealFeel Shade™92°

Max UV Index4 (Moderate)

WindSW 5 mph

Tue 8/19

90° /69°
10%
Mostly sunny and humid

RealFeel®101°

RealFeel Shade™93°

Max UV Index8 (Very High)

WindW 4 mph

Wed 8/20

89° /69°
10%
Sunny and less humid

RealFeel®97°

RealFeel Shade™87°

Max UV Index8 (Very High)

WindN 5 mph

Thu 8/21

89° /67°
5%
Plenty of sunshine

RealFeel®96°

RealFeel Shade™87°

Max UV Index8 (Very High)

WindNE 5 mph

Fri 8/22

88° /65°
20%
Plenty of sunshine

RealFeel®94°

RealFeel Shade™86°

Max UV Index8 (Very High)

WindE 2 mph

Sat 8/23

89° /68°
20%
Sunshine and a few clouds

RealFeel®95°

RealFeel Shade™89°

Max UV Index8 (Very High)

WindSSE 2 mph

Sun 8/24

89° /68°
25%
A blend of sunshine and clouds

RealFeel®90°

RealFeel Shade™88°

Max UV Index5 (Moderate)

WindS 6 mph

Mon 8/25

88° /69°
10%
Mostly sunny

RealFeel®92°

RealFeel Shade™87°

Max UV Index8 (Very High)

WindSSW 7 mph

Tue 8/26

89° /68°
40%
A thunderstorm in spots in the morning; otherwise, mainly cloudy and humid

RealFeel®93°

RealFeel Shade™90°

Max UV Index5 (Moderate)

WindSW 6 mph

Wed 8/27

86° /66°
25%
Humid with sunshine and a few clouds

RealFeel®96°

RealFeel Shade™87°

Max UV Index8 (Very High)

WindNNW 2 mph

Thu 8/28

85° /67°
20%
Mostly sunny

RealFeel®93°

RealFeel Shade™85°

Max UV Index8 (Very High)

WindNE 4 mph

Fri 8/29

85° /68°
25%
Cloudy and humid

RealFeel®89°

RealFeel Shade™89°

Max UV Index2 (Low)

WindENE 5 mph

Sat 8/30

87° /67°
10%
Sunny and humid

RealFeel®97°

RealFeel Shade™90°

Max UV Index7 (High)

WindENE 4 mph

Sun 8/31

88° /67°
10%
Mostly sunny and humid

RealFeel®98°

RealFeel Shade™91°

Max UV Index7 (High)

WindSW 2 mph

Mon 9/1

89° /68°
10%
Very warm and humid with sunshine

RealFeel®98°

RealFeel Shade™92°

Max UV Index7 (High)

WindESE 2 mph

Tue 9/2

88° /67°
65%
A couple of showers and a thunderstorm in the morning; otherwise, mostly cloudy and humid

RealFeel®97°

RealFeel Shade™95°

Max UV Index3 (Moderate)

WindNE 4 mph

Wed 9/3

87° /67°
65%
Partly sunny and humid; a couple of afternoon showers and a thunderstorm

RealFeel®98°

RealFeel Shade™92°

Max UV Index7 (High)

WindSSW 4 mph

Thu 9/4

85° /66°
40%
Humid with clouds and breaks of sun; a thunderstorm in spots in the afternoon

RealFeel®93°

RealFeel Shade™93°

Max UV Index4 (Moderate)

WindWNW 2 mph

Fri 9/5

86° /66°
55%
Humid with sun and some clouds; a passing thunderstorm in the afternoon

RealFeel®94°

RealFeel Shade™88°

Max UV Index7 (High)

WindNE 5 mph

Sat 9/6

85° /65°
10%
Mostly sunny and humid

RealFeel®95°

RealFeel Shade™88°

Max UV Index7 (High)

WindSSE 2 mph

Sun 9/7

84° /66°
65%
Humid with more clouds than sun; a couple of showers and a thunderstorm in the afternoon

RealFeel®90°

RealFeel Shade™90°

Max UV Index3 (Moderate)

WindS 5 mph

Mon 9/8

86° /65°
20%
Partly sunny and humid

RealFeel®87°

RealFeel Shade™84°

Max UV Index5 (Moderate)

WindNNW 9 mph

Tue 9/9

82° /63°
25%
Increasing cloudiness

RealFeel®82°

RealFeel Shade™82°

Max UV Index5 (Moderate)

WindNNW 2 mph

Wed 9/10

83° /64°
25%
Partly sunny and humid

RealFeel®88°

RealFeel Shade™84°

Max UV Index6 (High)

WindWSW 2 mph

Thu 9/11

84° /64°
20%
Mostly sunny and humid

RealFeel®89°

RealFeel Shade™86°

Max UV Index6 (High)

WindENE 2 mph

Fri 9/12

84° /59°
0%
Plenty of sunshine

RealFeel®87°

RealFeel Shade™83°

Max UV Index6 (High)

WindSE 5 mph

Sat 9/13

84° /60°
0%
Plenty of sunshine

RealFeel®87°

RealFeel Shade™84°

Max UV Index6 (High)

WindSSE 6 mph

Sun 9/14

83° /60°
1%
Brilliant sunshine

RealFeel®85°

RealFeel Shade™82°

Max UV Index6 (High)

WindS 6 mph

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World North America United States Missouri Lake St. Louis

Weather Near Lake St. Louis:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
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Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
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