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Alton, IL

77°F
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Alton

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Alton, IL Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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July 8 - July 22

Wed 7/8

92° /70°
3%
Clear to partly cloudy and humid

RealFeel®73°

Cloud Cover15%

WindSSE 5 mph

Wind Gusts12 mph

Thu 7/9

89° /72°
80%
Humid with intervals of bright sunshine; a heavy thunderstorm in the afternoon; thunderstorms can bring flooding downpours, hail and damaging wind gusts

RealFeel®99°

RealFeel Shade™91°

Max UV Index10.0 (Very High)

WindSW 8 mph

Hours of Precipitation1

Hours of Rain1

Fri 7/10

84° /68°
88%
Humid with a couple of showers and a thunderstorm; cloudy in the morning, then intervals of bright sunshine in the afternoon

RealFeel®96°

RealFeel Shade™89°

Max UV Index5.0 (Moderate)

WindW 7 mph

Hours of Precipitation4

Hours of Rain4

Sat 7/11

84° /67°
55%
Cloudy and humid with widely separated thunderstorms

RealFeel®91°

RealFeel Shade™87°

Max UV Index4.0 (Moderate)

WindNE 7 mph

Hours of Precipitation1

Hours of Rain1

Sun 7/12

89° /66°
9%
Mostly sunny and humid

RealFeel®98°

RealFeel Shade™90°

Max UV Index11.0 (Extreme)

WindNE 8 mph

Mon 7/13

88° /70°
6%
Plenty of sunshine

RealFeel®95°

RealFeel Shade™87°

Max UV Index11.0 (Extreme)

WindNE 8 mph

Tue 7/14

90° /70°
9%
Humid with sunshine

RealFeel®104°

RealFeel Shade™94°

Max UV Index11.0 (Extreme)

WindE 4 mph

Wed 7/15

93° /72°
49%
A morning shower in the area; otherwise, mostly sunny and hot

RealFeel®102°

RealFeel Shade™93°

Max UV Index11.0 (Extreme)

WindN 1 mph

Hours of Precipitation1

Hours of Rain1

Thu 7/16

92° /71°
2%
Partly sunny and toasty conditions

RealFeel®102°

RealFeel Shade™94°

Max UV Index11.0 (Extreme)

WindNW 1 mph

Fri 7/17

90° /71°
1%
Wall-to-wall sunshine

RealFeel®100°

RealFeel Shade™91°

Max UV Index11.0 (Extreme)

WindSSE 2 mph

Sat 7/18

91° /68°
2%
Sun through high clouds and humid

RealFeel®97°

RealFeel Shade™95°

Max UV Index7.0 (High)

WindWSW 9 mph

Sun 7/19

90° /71°
55%
Occasional rain in the morning; otherwise, mostly cloudy and humid

RealFeel®101°

RealFeel Shade™98°

Max UV Index10.0 (Very High)

WindSW 7 mph

Hours of Precipitation1

Hours of Rain1

Mon 7/20

90° /69°
55%
Mostly cloudy and uncomfortably humid; a little afternoon rain

RealFeel®106°

RealFeel Shade™96°

Max UV Index11.0 (Extreme)

WindNW 7 mph

Hours of Precipitation1

Hours of Rain1

Tue 7/21

86° /68°
63%
A couple of morning showers; otherwise, decreasing clouds and very humid

RealFeel®101°

RealFeel Shade™93°

Max UV Index8.0 (Very High)

WindENE 8 mph

Hours of Precipitation1

Hours of Rain1

Wed 7/22

85° /66°
10%
Mostly sunny

RealFeel®90°

RealFeel Shade™83°

Max UV Index10.0 (Very High)

WindENE 6 mph

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World North America United States Illinois Alton

Weather Near Alton:

  • O'Fallon, MO
  • St. Charles, MO
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