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Severe weather returns to central US this weekend with flood potential | Click to see the impacts. Chevron right
Torrential rain in Arthur's wake could lead to more flooding. Click for the forecast. Chevron right

Johnston, SC

87°F
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Johnston

South Carolina

87°
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Johnston, SC Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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3 PM

87°
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 7%
Chevron down
Mostly sunny

RealFeel Shade™86°

Heat Index88°

WindE 5 mph

Air QualityFair

Max UV Index8.0 (Very High)

Wind Gusts6 mph

Humidity41%

Indoor Humidity41% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

88°
RealFeel® 95°
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 7%
Chevron down
Mostly sunny

RealFeel Shade™87°

Heat Index88°

WindESE 4 mph

Air QualityFair

Max UV Index5.0 (Moderate)

Wind Gusts5 mph

Humidity41%

Indoor Humidity41% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

88°
RealFeel® 93°
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 7%
Chevron down
Mostly sunny

RealFeel Shade™88°

Heat Index89°

WindSW 4 mph

Air QualityFair

Max UV Index3.4 (Moderate)

Wind Gusts5 mph

Humidity40%

Indoor Humidity40% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

87°
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 7%
Chevron down
Partly sunny

RealFeel Shade™86°

Heat Index87°

WindW 2 mph

Air QualityFair

Max UV Index2.1 (Low)

Wind Gusts5 mph

Humidity44%

Indoor Humidity44% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover43%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

84°
RealFeel® 87°
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 5%
Chevron down
Partly sunny

RealFeel Shade™85°

Heat Index86°

WindWNW 2 mph

Air QualityFair

Max UV Index1.1 (Low)

Wind Gusts4 mph

Humidity51%

Indoor Humidity51% (Humid)

Dew Point64° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

82°
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 0%
Chevron down
Mostly cloudy

RealFeel Shade™82°

Heat Index84°

WindW 5 mph

Air QualityFair

Max UV Index0.1 (Low)

Wind Gusts6 mph

Humidity57%

Indoor Humidity57% (Humid)

Dew Point65° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover80%

Visibility10 mi

Cloud Ceiling19200 ft

9 PM

79°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly cloudy

WindW 5 mph

Air QualityFair

Wind Gusts5 mph

Humidity65%

Indoor Humidity65% (Humid)

Dew Point66° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover81%

Visibility10 mi

Cloud Ceiling22800 ft

10 PM

76°
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

WindWSW 4 mph

Air QualityFair

Wind Gusts4 mph

Humidity71%

Indoor Humidity71% (Humid)

Dew Point66° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover72%

Visibility10 mi

Cloud Ceiling26400 ft

11 PM

73°
RealFeel® 74°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

WindSSW 4 mph

Air QualityFair

Wind Gusts4 mph

Humidity77%

Indoor Humidity77% (Humid)

Dew Point66° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover58%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Johnston

AccuWeather's hourly forecast for Johnston provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 87° with a RealFeel® of 97°, mostly sunny with a 7% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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