World > North America > United States > South Carolina > Johnston  

Johnston, SC Weather Forecast

Feedback E-mail the Weather

Quick Weather Clicks

Johnston, SC Weather Forecast

Current Conditions

Settings
Johnston SC weather - Clear - 75°F
Clear
75°F
Updated 1:36 am
Feels Like 76°F
Humidity 81%
Wind SE 5 mph
Barometer  30.26 in
Dew Point 69°F
Johnston SC weather - Clear - 24°C
Clear
24°C
Updated 1:36 am
Feels Like 25°C
Humidity 81%
Wind SE 8 km/h
Barometer  102.5 kPa
Dew Point 21°C
WX Settings

Johnston Weather Forecast

REST OF TONIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY
Johnston, SC Weather - Rest Of Tonight Mostly Clear Johnston, SC Weather - Wednesday Mostly Sunny Johnston, SC Weather - Wednesday Night Partly Cloudy Johnston, SC Weather - Thursday Chance Of Showers Johnston, SC Weather - Thursday Night Chance Of T-Storm Johnston, SC Weather - Friday Chance Of T-Storm Johnston, SC Weather - Friday Night Chance Of T-Storm Johnston, SC Weather - Saturday Chance Of T-Storm Johnston, SC Weather - Saturday Night Chance Of T-Storm Johnston, SC Weather - Sunday Chance Of T-Storm Johnston, SC Weather - Sunday Night Chance Of T-Storm Johnston, SC Weather - Monday Mostly Sunny
Mostly Clear Mostly Sunny Partly Cloudy Chance of Showers Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm Mostly Sunny
Lo: 65°FLo: 18°C Hi: 91°FHi: 33°C
 Lo: 69°FLo: 21°C Hi: 91°FHi: 33°C
 Lo: 71°FLo: 22°C Hi: 95°FHi: 35°C
 Lo: 71°FLo: 22°C Hi: 91°FHi: 33°C
 Lo: 71°FLo: 22°C Hi: 90°FHi: 32°C
 Lo: 71°FLo: 22°C Hi: 91°FHi: 33°C
POP: 30% POP: 30% POP: 50% POP: 50% POP: 70% POP: 70% POP: 40% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 1208 AM EDT Wed Sep 09 2026 Johnston, SC Weather - WeatherWorld.com

Trending Headlines

Johnston Radar Loop

Use the map search tool if you want to place a location marker on the radar map...

Johnston Quick Facts

National Two Day Weather Forecast


E-mail the Johnston Weather Forecast

Voice your opinion or tell us about page issues...

Johnston Forecast Discussion

Meteorlogic Glosserator
Instant definitions for any meteorological term.

Issued: 134 AM EDT Wed Sep 9 2026

Key Messages

  • 1. Gradually warming temperatures through Friday. Rain chances increase Thursday and into the weekend.

Discussion

... KEY MESSAGE 1: Gradually warming temperatures through Friday. Rain chances increase Thursday and into the weekend.

Surface high pressure continues moving offshore today, which will combine with strengthening upper ridging to produce gradually warming temperatures through Friday. Fortunately it looks like most, if not all, of our CWA should see another dry day with foreca...