Weather WorldJohnston, SC 7-Day Weather Forecast
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Johnston Weather Forecast
Johnston, SC Weather Forecast Date: 1209 AM EST Wed Mar 04 2026
Weather forecast for Johnston, SC
Tonight Lo: 49°F Lo: 9°C |
Tonight... Partly cloudy. Near steady temperature in the upper 40s. Light and variable winds. |
Wed Hi: 75°FHi: 24°C Lo: 55°F Lo: 13°C |
Wednesday... Patchy fog in the morning. Mostly sunny. Highs in the mid 70s. Light and variable winds, becoming southwest around 5 mph in the afternoon. |
Thu Hi: 80°FHi: 27°C Lo: 60°F Lo: 16°C |
Thursday... Areas of fog in the morning. Partly sunny. Highs around 80. South winds around 5 mph. |
| Fri Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C |
Friday... Partly sunny. Highs in the lower 80s. |
Sat Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Saturday... Mostly cloudy in the morning, then partly sunny with a chance of showers in the afternoon. Highs in the mid 80s. Chance of rain 40%. |
| Sun Hi: 81°FHi: 27°C Lo: 60°F Lo: 16°C |
Sunday... Partly sunny. A chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 50%. |
| Mon Hi: 81°FHi: 27°C Lo: 60°F Lo: 16°C |
Monday... Mostly cloudy in the morning, then becoming partly sunny. A 50% chance of showers. Highs in the lower 80s. |
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