Johnston, SC Weather Forecast
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Johnston Weather Forecast
| REST OF TONIGHT | TUESDAY | TUESDAY NIGHT | VETERANS DAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
| Mostly Clear | Mostly Sunny | Partly Cloudy | Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Sunny | Clear | Sunny | Clear | Sunny |
| Lo: 41°FLo: 5°C | Hi: 75°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Lo: 41°FLo: 5°C | Hi: 60°FHi: 16°C | Lo: 35°FLo: 2°C | Hi: 59°FHi: 15°C | Lo: 31°FLo: -1°C | Hi: 61°FHi: 16°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1208 AM EST Tue Nov 10 2026 

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Issued: 105 AM EST Tue Nov 10 2026
Key Messages
- 1. Seasonable conditions this week with a front ushering in a colder air mass for the end of the week and into the weekend.
Discussion
... Key Message 1: Seasonable conditions this week with a front ushering in a colder air mass for the end of the week and into the weekend.
A relatively quiet weather pattern continues through midweek as high pressure remains in control. Temperatures will gradually warm each day, with highs reaching the mid-70s. Efficient radiational cooling will result ...
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