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Tropical Storm Bertha makes second landfall near Texas-Louisiana border. Click for the latest. Chevron right

Grafton, IL

78°F
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Grafton

Illinois

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

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July 23 - August 6

Thu 7/23

79° /64°
3%
Intervals of clouds and sunshine

RealFeel®84°

RealFeel Shade™77°

Max UV Index7.0 (High)

WindENE 6 mph

Fri 7/24

74° /68°
67%
Cloudy and cool; a couple of afternoon showers

RealFeel®77°

RealFeel Shade™73°

Max UV Index3.0 (Moderate)

WindSE 6 mph

Hours of Precipitation1

Hours of Rain1

Sat 7/25

87° /73°
55%
A thunderstorm in spots in the morning; otherwise, humid with intervals of bright sunshine

RealFeel®100°

RealFeel Shade™93°

Max UV Index7.0 (High)

WindESE 6 mph

Hours of Precipitation0.5

Hours of Rain0.5

Sun 7/26

95° /74°
8%
Mainly clear with sunshine; danger of dehydration and heatstroke if outside for extended periods of time

RealFeel®110°

RealFeel Shade™101°

Max UV Index10.0 (Very High)

WindSSW 4 mph

Mon 7/27

99° /74°
6%
Sweltering heat with partial sunshine; danger of dehydration and heatstroke if outside for extended periods of time

RealFeel®109°

RealFeel Shade™103°

Max UV Index10.0 (Very High)

WindSSW 8 mph

Tue 7/28

97° /74°
55%
Hot with some sun; watch for a strong afternoon thunderstorm

RealFeel®107°

RealFeel Shade™101°

Max UV Index8.0 (Very High)

WindNNW 7 mph

Hours of Precipitation1

Hours of Rain1

Wed 7/29

93° /72°
12%
Partly sunny

RealFeel®102°

RealFeel Shade™95°

Max UV Index10.0 (Very High)

WindENE 7 mph

Thu 7/30

91° /70°
1%
Humid with clouds and limited sun

RealFeel®101°

RealFeel Shade™96°

Max UV Index8.0 (Very High)

WindNE 6 mph

Fri 7/31

87° /68°
75%
Cloudy and humid; a couple of showers in the afternoon

RealFeel®91°

RealFeel Shade™89°

Max UV Index3.0 (Moderate)

WindNNE 7 mph

Hours of Precipitation2

Hours of Rain2

Sat 8/1

88° /66°
11%
Partly sunny

RealFeel®100°

RealFeel Shade™89°

Max UV Index10.0 (Very High)

WindNNE 5 mph

Sun 8/2

86° /67°
1%
Mostly cloudy

RealFeel®93°

RealFeel Shade™85°

Max UV Index10.0 (Very High)

WindNNE 6 mph

Mon 8/3

87° /66°
1%
Partial sunshine

RealFeel®99°

RealFeel Shade™89°

Max UV Index10.0 (Very High)

WindESE 5 mph

Tue 8/4

88° /68°
2%
Mostly sunny and humid

RealFeel®96°

RealFeel Shade™90°

Max UV Index10.0 (Very High)

WindSSW 6 mph

Wed 8/5

92° /78°
5%
Plenty of sun

RealFeel®103°

RealFeel Shade™94°

Max UV Index10.0 (Very High)

WindNW 4 mph

Thu 8/6

84° /66°
5%
Sunshine

RealFeel®90°

RealFeel Shade™82°

Max UV Index9.0 (Very High)

WindS 6 mph

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World North America United States Illinois Grafton

Weather Near Grafton:

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