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Tropical rainstorm brings torrential downpours and dangerous flash flooding to Louisiana Chevron right
Flash flood risk to focus on parts of central US. Get the forecast Chevron right

St. Johns, IL

74°F
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St. Johns

Illinois

74°
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St. Johns, IL Weather
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7 AM

73°
RealFeel® 81°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 34%
Chevron down
Mostly cloudy

RealFeel Shade™81°

WindENE 2 mph

Air QualityExcellent

Max UV Index0 (Low)

Wind Gusts6 mph

Humidity100%

Indoor Humidity95% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover77%

Visibility10 mi

Cloud Ceiling6000 ft

8 AM

75°
RealFeel® 84°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 34%
Chevron down
Cloudy

RealFeel Shade™84°

WindNNE 5 mph

Air QualityExcellent

Max UV Index1 (Low)

Wind Gusts6 mph

Humidity100%

Indoor Humidity95% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling5400 ft

9 AM

77°
RealFeel® 86°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 34%
Chevron down
Cloudy

RealFeel Shade™86°

WindNNE 5 mph

Air QualityFair

Max UV Index1 (Low)

Wind Gusts6 mph

Humidity93%

Indoor Humidity93% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling4200 ft

10 AM

78°
RealFeel® 88°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 39%
Chevron down
Cloudy

RealFeel Shade™85°

WindNNE 6 mph

Air QualityFair

Max UV Index1 (Low)

Wind Gusts7 mph

Humidity88%

Indoor Humidity88% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling3100 ft

11 AM

80°
RealFeel® 92°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

RealFeel Shade™87°

WindNE 5 mph

Air QualityFair

Max UV Index2 (Low)

Wind Gusts6 mph

Humidity84%

Indoor Humidity84% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling4400 ft

12 PM

82°
RealFeel® 90°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 66%
Chevron down
Thunderstorms

RealFeel Shade™86°

WindNE 5 mph

Air QualityFair

Max UV Index2 (Low)

Wind Gusts6 mph

Humidity80%

Indoor Humidity80% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover92%

Rain0.15 in

Visibility4 mi

Cloud Ceiling2000 ft

1 PM

82°
RealFeel® 94°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 61%
Chevron down
Thunderstorms

RealFeel Shade™88°

WindNE 5 mph

Air QualityFair

Max UV Index3 (Moderate)

Wind Gusts6 mph

Humidity83%

Indoor Humidity83% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Rain0.07 in

Visibility5 mi

Cloud Ceiling4000 ft

2 PM

84°
RealFeel® 97°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 40%
Chevron down
Cloudy

RealFeel Shade™91°

WindENE 5 mph

Air QualityFair

Max UV Index3 (Moderate)

Wind Gusts6 mph

Humidity76%

Indoor Humidity76% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover91%

Visibility10 mi

Cloud Ceiling7100 ft

3 PM

85°
RealFeel® 98°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 34%
Chevron down
Cloudy

RealFeel Shade™93°

WindENE 5 mph

Air QualityFair

Max UV Index2 (Low)

Wind Gusts6 mph

Humidity72%

Indoor Humidity72% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling7100 ft

4 PM

84°
RealFeel® 96°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 40%
Chevron down
Cloudy

RealFeel Shade™92°

WindE 5 mph

Air QualityFair

Max UV Index2 (Low)

Wind Gusts6 mph

Humidity74%

Indoor Humidity74% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling7100 ft

5 PM

82°
RealFeel® 91°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 73%
Chevron down
Thunderstorms

RealFeel Shade™91°

WindSE 6 mph

Air QualityFair

Max UV Index1 (Low)

Wind Gusts6 mph

Humidity87%

Indoor Humidity87% (Dangerously Humid)

Dew Point78° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Rain0.15 in

Visibility4 mi

Cloud Ceiling2000 ft

6 PM

82°
RealFeel® 92°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

RealFeel Shade™92°

WindSE 6 mph

Air QualityFair

Max UV Index1 (Low)

Wind Gusts7 mph

Humidity82%

Indoor Humidity82% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling18800 ft

7 PM

81°
RealFeel® 86°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 73%
Chevron down
Thunderstorms

RealFeel Shade™86°

WindSE 6 mph

Air QualityFair

Max UV Index0 (Low)

Wind Gusts7 mph

Humidity86%

Indoor Humidity86% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover94%

Rain0.15 in

Visibility4 mi

Cloud Ceiling2000 ft

8 PM

79°
RealFeel® 89°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 38%
Chevron down
Intermittent clouds

RealFeel Shade™89°

WindSE 6 mph

Air QualityFair

Max UV Index0 (Low)

Wind Gusts7 mph

Humidity90%

Indoor Humidity90% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling21300 ft

9 PM

79°
RealFeel® 88°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 32%
Chevron down
Intermittent clouds

WindESE 6 mph

Air QualityFair

Wind Gusts6 mph

Humidity91%

Indoor Humidity91% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling18000 ft

10 PM

76°
RealFeel® 86°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 38%
Chevron down
Intermittent clouds

WindESE 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity98%

Indoor Humidity95% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling14700 ft

11 PM

76°
RealFeel® 82°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 51%
Chevron down
Mostly cloudy w/ t-storms

WindESE 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity99%

Indoor Humidity95% (Extremely Humid)

Dew Point76° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Rain0.04 in

Visibility6 mi

Cloud Ceiling4000 ft

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World North America United States Illinois St. Johns

Weather Near St. Johns:

  • Cape Girardeau, MO
  • Carbondale, IL
  • Paducah, KY
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