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North Charleston, South Carolina 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for 2 Miles SSE Charleston Air Force Base SC
National Weather Service Forecast for:
2 Miles SSE Charleston Air Force Base SC
Issued by: National Weather Service Charleston, SC |
| Updated: 8:33 pm EDT Jul 20, 2026 |
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Overnight
 Partly Cloudy
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Tuesday
 Mostly Sunny
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Tuesday Night
 Partly Cloudy
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Wednesday
 Mostly Sunny
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Wednesday Night
 Slight Chance T-storms
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Thursday
 Chance Showers then Chance T-storms
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Thursday Night
 Chance T-storms
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Friday
 Chance T-storms then Showers Likely
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Friday Night
 Showers Likely then Chance T-storms
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| Lo 79 °F |
Hi 94 °F |
Lo 80 °F |
Hi 94 °F |
Lo 79 °F |
Hi 93 °F |
Lo 77 °F |
Hi 92 °F |
Lo 76 °F |
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Overnight
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Partly cloudy, with a low around 79. South wind around 8 mph. |
Tuesday
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Mostly sunny, with a high near 94. Heat index values as high as 106. South wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph. |
Tuesday Night
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Partly cloudy, with a low around 80. South wind 11 to 14 mph, with gusts as high as 22 mph. |
Wednesday
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Mostly sunny, with a high near 94. Heat index values as high as 105. South wind 9 to 17 mph, with gusts as high as 28 mph. |
Wednesday Night
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A slight chance of showers and thunderstorms. Partly cloudy, with a low around 79. South wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%. |
Thursday
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A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 93. Chance of precipitation is 40%. |
Thursday Night
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A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77. |
Friday
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A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 92. Chance of precipitation is 60%. |
Friday Night
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Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 76. Chance of precipitation is 60%. |
Saturday
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Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 91. Chance of precipitation is 70%. |
Saturday Night
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Showers and thunderstorms likely. Mostly cloudy, with a low around 75. Chance of precipitation is 60%. |
Sunday
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A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 92. |
Sunday Night
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A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76. |
Monday
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A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94. |
Forecast from NOAA-NWS
for 2 Miles SSE Charleston Air Force Base SC.
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Weather Forecast Discussion
779
FXUS62 KCHS 202332
AFDCHS
Area Forecast Discussion
National Weather Service Charleston SC
732 PM EDT Mon Jul 20 2026
.WHAT HAS CHANGED...
All sections have been updated.
&&
.KEY MESSAGES...
- 1) Smoke from the Horse Island Wildfire will impact northeast
Berkeley County tonight into Tuesday.
- 2) Hot and humid conditions across coastal South Carolina and
Georgia through mid-week. Heat Advisories could be needed.
- 3) A slow-moving cold front may bring greater rainfall chances
late this week through this weekend.
&&
.DISCUSSION...
KEY MESSAGE 1: Smoke from the Horse Island Wildfire will impact
northeast Berkeley County tonight into Tuesday.
A Dense Smoke Advisory has been requested by the U.S. Forest Service
for northeast portions of Berkeley County in response to the Horse
Island Wildfire. Smoke in the vicinity of the fire is significant
and conditions will deteriorate overnight as the nocturnal inversion
develops. The latest Hysplit output shows the worst of the smoke
will remain across northeast Berkeley County and extend across
the Santee River into a small area of southwest Georgetown
County. Visibilities may drop below 1 mile at times overnight,
especially along parts of Highway 45. Road closures are
possible. Smoke will likely remain an issue into Tuesday
although visibilities should improve some by mid-morning as
dispersion increases and mixing heights rise. Another Dense
Smoke Advisory may be needed Tuesday night as smoke settles
during the overnight hours.
KEY MESSAGE 2: Hot and humid conditions across coastal South
Carolina and Georgia through mid-week. Heat Advisories could be
needed.
The forecast area will remain of the edge of a H5 ridge centered off
the Southeast U.S. coast. Sfc high pressure over the western
Atlantic will provide the region with south winds Tuesday and
Wednesday, with occasional gusts during the afternoon. This pattern
should support hot daytime temperatures, with highs generally in the
mid 90s. Afternoon dewpoints may range in the mid to upper 70s,
especially after the passage of the sea breeze. Heat index values
may peak between 105 to 109 degrees right along the coast. It is
possible that a Heat Advisory could be needed.
Low temperatures are forecast to range in the upper 70s, with values
around 80 degrees along the coast. The mild low temperatures could
challenge some record high low temperatures this week, see Climate
Section below.
KEY MESSAGE 3: A slow-moving cold front may bring greater rainfall
chances late this week through this weekend.
Recent runs of the GFS and ECMWF indicate that a cold front may
reach the forecast area by early Thursday. Guidance indicates that
the front will slow as it approaches the coast, then possibly remain
nearly stationary through this weekend. At H5, a broad trough is
forecast to settle over the east coast, possibly amplifying into
Sunday. Forecast soundings indicate very moist conditions across the
region, with PW values possibly ranging between 2.2 to 2.4 inches on
Saturday. Given the deep moisture, synoptic scale forcing, and
periods of moderate instability, the forecast will feature at least
likely PoPs. The Excessive Rainfall Outlooks Wednesday through
Friday indicates a Marginal Risk for the area.
&&
.AVIATION /00Z TUESDAY THROUGH SATURDAY/...
21/00z Aviation Discussion:
KCHS/KJZI/KSAV: VFR through 22/00z.
Extended Aviation Outlook: Prevailing VFR through mid- week.
Chances of flight restrictions increase later this week with a
greater coverage of showers/thunderstorms.
&&
.MARINE...
Today and tonight: The gradient will remain pinched between
high pressure centered offshore and an inland trough. South to
southwest winds could gust up to 20 kt, but should remain below
Small Craft Advisory criteria. With little to no swell energy,
seas will range from 2 to 3 ft through the evening, before
increasing to 3 to 4 ft overnight.
Tuesday through Friday: The pressure gradient will tighten across
the coastal waters as a cold front approaches from the north and a
east-west sfc ridge remains to the south. This pattern should
support increasing south winds on Tuesday, with gusty conditions
expected across the marine zones into Wednesday night. In addition,
seas will build on Tuesday, with 6 ft sea common across the waters
Tuesday night in Wednesday morning. A Small Craft Advisory is in
effect from Tuesday afternoon to Wednesday night. As a cold front
approaches the region on Thursday and remains into Friday, the
pressure gradient across the region will weaken. Thursday and
Friday, winds are forecast to remain from the south between 15 to 20
kts with seas around 3 ft.
Rip Currents: A Moderate Risk of rip currents is in effect for the
SC and GA beaches through Wednesday, given enhanced winds along the
coastline and wave periods up to 6 seconds. Breakers may exceed 4 ft
on Wednesday, with wave periods between 6 to 7 seconds. It is
possible that a portion of the SC coast may need a high risk if
swell waves or wind speeds increase from the current forecast.
&&
.CLIMATE...
Record High Minimum Temperatures:
July 20:
KCHS: 79/2025
KCXM: 83/2000
KSAV: 79/1942
July 21:
KCHS: 80/1986
KCXM: 83/1998
July 22:
KCHS: 81/2011
KCXM: 83/2011
&&
.CHS WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...Dense Smoke Advisory until 10 AM EDT Tuesday for SCZ045.
MARINE...Small Craft Advisory from noon Tuesday to 5 AM EDT Thursday
for AMZ360-362.
Small Craft Advisory from 2 PM Tuesday to midnight EDT
Wednesday night for AMZ364-384.
&&
$$
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