Johnston, SC Weather Forecast
Local 7-day forecast
Patchy Fog then Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Johnston, SC in one place.
Patchy fog between 7am and 9am. Mostly cloudy, with a high near 81. Southeast wind 7 to 12 mph.
Local Weather Overview
This forecast page for Johnston, SC is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Nov 4, 2026 7:38 AM EST.
The active forecast window currently covers Nov 4 to Nov 10, 2026 for Johnston, SC.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 4 to Nov 10, 2026
- Latest sync
- Nov 4, 2026 7:38 AM EST
- Forecast office
- CAE
- Source
- NOAA / NWS
Daily Outlook
This Week in Johnston
Today looks like the warmest upcoming period in Johnston at 81 degrees F.
Monday Night is the coolest period ahead with temperatures near 41 degrees F.
The strongest winds are forecast for Today at about 7 to 12 mph SE.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Nov 4, 2026 7:38 AM EST
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- CAE
- Radar station
- KCAE
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain between 7pm and 10pm, then a chance of rain and a slight chance of thunderstorms between 10pm and 2am, then a chance of showers and thunderstorms between 2am and 3am, then a chance of rain and a slight chance of thunderstorms between 3am and 5am. Mostly cloudy, with a low around 64. Southeast wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Patchy fog between 7am and 8am, then a slight chance of rain between 1pm and 5pm. Partly sunny, with a high near 80. South wind 3 to 7 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of rain between 1am and 4am, then a chance of rain and a slight chance of thunderstorms. Mostly cloudy, with a low around 62. South wind around 2 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain and a slight chance of thunderstorms before 1pm. Partly sunny, with a high near 77. Southwest wind 2 to 7 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Mostly clear, with a low around 52. New rainfall amounts less than a tenth of an inch possible.
Sunny, with a high near 72.
Partly cloudy, with a low around 44.
Mostly sunny, with a high near 69.
Mostly clear, with a low around 42.
Sunny, with a high near 68.
Mostly clear, with a low around 41.
Sunny, with a high near 70.
Mostly clear, with a low around 43.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Nov 4
|
Patchy Fog then Mostly Cloudy
|
81°F |
7 to 12 mph
SE
|
|
Tonight
Nov 4
|
Chance Light Rain
|
64°F |
5 to 10 mph
SE
|
|
Thursday
Nov 5
|
Patchy Fog then Slight Chance Light Rain
|
80°F |
3 to 7 mph
S
|
|
Thursday Night
Nov 5
|
Mostly Cloudy then Chance Light Rain
|
62°F |
2 mph
S
|
|
Friday
Nov 6
|
Chance Light Rain
|
77°F |
2 to 7 mph
SW
|
|
Friday Night
Nov 6
|
Mostly Clear
|
52°F |
5 mph
NW
|
|
Saturday
Nov 7
|
Sunny
|
72°F |
3 to 7 mph
N
|
|
Saturday Night
Nov 7
|
Partly Cloudy
|
44°F |
5 mph
NE
|
|
Sunday
Nov 8
|
Mostly Sunny
|
69°F |
5 mph
NE
|
|
Sunday Night
Nov 8
|
Mostly Clear
|
42°F |
3 mph
N
|
|
Monday
Nov 9
|
Sunny
|
68°F |
5 mph
N
|
|
Monday Night
Nov 9
|
Mostly Clear
|
41°F |
2 mph
W
|
|
Tuesday
Nov 10
|
Sunny
|
70°F |
1 to 6 mph
W
|
|
Tuesday Night
Nov 10
|
Mostly Clear
|
43°F |
3 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Johnston.