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Peak hurricane season is this week. Here's when the next storm may form. Chevron right

Arnold, MO

64°F
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Arnold

Missouri

64°
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Arnold, MO Weather
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September 8 - September 22

Tue 9/8

93° /71°
1%
Mostly sunny and toasty conditions; possible danger of dehydration and heatstroke while doing strenuous activities
alerts

Air Quality Alert

3:40 PM Monday - 1:45 AM Wednesday

RealFeel®98°

RealFeel Shade™93°

Max UV Index7.0 (High)

WindSSE 6 mph

Wed 9/9

98° /71°
55%
Hot with sunshine and a few clouds; an afternoon thunderstorm; gusty winds can accompany any downpour

RealFeel®108°

RealFeel Shade™102°

Max UV Index7.0 (High)

WindW 8 mph

Total Hours of Precipitation0.5

Total Hours of Rain0.5

Thu 9/10

78° /63°
55%
Humid; a thunderstorm in spots in the morning, then sunshine filtered by passing clouds in the afternoon

RealFeel®86°

RealFeel Shade™82°

Max UV Index3.0 (Moderate)

WindWNW 6 mph

Total Hours of Precipitation1

Total Hours of Rain1

Fri 9/11

86° /66°
3%
Humid with times of clouds and sun

RealFeel®93°

RealFeel Shade™88°

Max UV Index6.0 (High)

WindSE 6 mph

Sat 9/12

86° /68°
55%
Mostly cloudy and humid with a thunderstorm in spots

RealFeel®94°

RealFeel Shade™90°

Max UV Index2.0 (Low)

WindWSW 7 mph

Total Hours of Precipitation1

Total Hours of Rain1

Sun 9/13

89° /68°
25%
Humid with clouds and sun

RealFeel®94°

RealFeel Shade™94°

Max UV Index3.0 (Moderate)

WindSSW 6 mph

Mon 9/14

90° /64°
3%
Luminous sunshine, hot and humid

RealFeel®96°

RealFeel Shade™93°

Max UV Index6.0 (High)

WindS 7 mph

Tue 9/15

81° /60°
4%
Not as warm with lower humidity with sunshine and a few clouds

RealFeel®83°

RealFeel Shade™78°

Max UV Index6.0 (High)

WindNNW 7 mph

Wed 9/16

75° /59°
1%
Plenty of sunshine

RealFeel®79°

RealFeel Shade™73°

Max UV Index6.0 (High)

WindNNE 7 mph

Thu 9/17

75° /57°
2%
Intervals of bright sunshine

RealFeel®78°

RealFeel Shade™73°

Max UV Index6.0 (High)

WindNNE 6 mph

Fri 9/18

76° /58°
4%
Clouds and intervals of sunshine

RealFeel®79°

RealFeel Shade™74°

Max UV Index4.0 (Moderate)

WindN 5 mph

Sat 9/19

75° /54°
2%
Sunshine and some clouds

RealFeel®82°

RealFeel Shade™78°

Max UV Index6.0 (High)

WindN 4 mph

Sun 9/20

79° /57°
3%
Mostly cloudy

RealFeel®83°

RealFeel Shade™82°

Max UV Index3.0 (Moderate)

WindS 2 mph

Mon 9/21

78° /56°
20%
Mostly sunny and humid

RealFeel®83°

RealFeel Shade™80°

Max UV Index5.0 (Moderate)

WindNNE 5 mph

Tue 9/22

79° /61°
5%
Sunny

RealFeel®83°

RealFeel Shade™78°

Max UV Index5.0 (Moderate)

WindENE 4 mph

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World North America United States Missouri Arnold

Weather Near Arnold:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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