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Day 1 Outlook • April 19, 2026
Day 2 Outlook • April 20, 2026
Day 3 Outlook • April 21, 2026
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dBZ 5
75

Hazardous Weather Conditions

  • No active alerts for ST HELENA ISLAND, SOUTH CAROLINA

Current Conditions: ST HELENA ISLAND, SOUTH CAROLINA

BEAUFORT MCAS (KNBC)

Mostly Cloudy

80.1 F
Humidity:49%
Wind Speed:NW 15.0 G 21.9 mph
Barometer:29.97 in
Dewpoint:59.0 F
Visibility:7.00 mi
Precip:--
Heat Index:80.8 F
Wind Chill:NA
Apr 19 2026, 01:56 PM EDT
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5 Day Forecast for ST HELENA ISLAND, SOUTH CAROLINA (29920)

Sunday

High 80 °F
Chance of Rain Showers
Sunday
Night
Low 55 °F
Mostly Cloudy
Monday

High 75 °F
Sunny
Monday
Night
Low 55 °F
Mostly Clear
Tuesday

High 73 °F
Sunny
Tuesday
Night
Low 59 °F
Mostly Clear
Wednesday

High 77 °F
Mostly Cloudy
Wednesday
Night
Low 60 °F
Mostly Clear
Thursday

High 82 °F
Mostly Sunny

Detailed Forecast for ST HELENA ISLAND, SOUTH CAROLINA (29920)

Sunday
Chance of Rain Showers. High near 80°F. Wind 10 to 13 mph, with gusts as high as 22 mph.
Sunday Night
Mostly Cloudy. Low around 55°F. Wind 7 to 9 mph, with gusts as high as 17 mph.
Monday
Sunny. High near 75°F. Wind 5 to 9 mph, with gusts as high as 17 mph.
Monday Night
Mostly Clear. Low around 55°F. Wind 5 to 7 mph, with gusts as high as 14 mph.
Tuesday
Sunny. High near 73°F. Wind 7 to 9 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly Clear. Low around 59°F. Wind 3 to 6 mph, with gusts as high as 12 mph.
Wednesday
Mostly Cloudy. High near 77°F. Wind 3 to 7 mph, with gusts as high as 12 mph.
Wednesday Night
Mostly Clear. Low around 60°F. Wind 6 to 7 mph, with gusts as high as 15 mph.
Thursday
Mostly Sunny. High near 82°F. Wind 5 to 6 mph, with gusts as high as 12 mph.
Thursday Night
Mostly Clear. Low around 64°F. Wind 5 to 6 mph, with gusts as high as 15 mph.
Friday
Partly Sunny. High near 82°F. Wind 5 to 9 mph, with gusts as high as 14 mph.
Friday Night
Partly Cloudy. Low around 66°F. Wind around 7 mph, with gusts as high as 16 mph.
Saturday
Slight Chance of Showers. High near 82°F. Wind 7 to 10 mph, with gusts as high as 17 mph.
SC Radar
Current Radar • SC
Day 1 Outlook • April 19, 2026

Observation History for ST HELENA ISLAND, SOUTH CAROLINA

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
01:56 PM EDT NW 15.0 G 21.9 7.00 Mostly Cloudy -- 80.1 59.0 49% NA 80.8 29.97 1014.9
12:56 PM EDT 15.0 7.00 Mostly Cloudy -- 82.0 60.1 47% NA 82.4 29.98 1015.2
11:56 AM EDT 13.9 7.00 Mostly Cloudy -- 82.0 60.1 47% NA 82.4 29.97 1014.9
10:56 AM EDT NW 8.1 G 19.7 7.00 Mostly Cloudy -- 82.0 62.1 51% NA 82.9 29.96 1014.6
09:56 AM EDT W 6.9 7.00 Mostly Cloudy -- 75.9 61.0 60% NA 76.1 29.95 1014.2
08:56 AM EDT W 9.2 7.00 Partly Cloudy -- 75.0 60.1 60% NA 75.0 29.96 1014.6
07:56 AM EDT 8.1 7.00 Mostly Cloudy -- 71.1 60.1 68% NA 71.1 29.95 1014.2
06:56 AM EDT 3.4 10.00 Clear -- 64.9 57.9 78% NA NA 29.94 1013.9
05:56 AM EDT 6.9 10.00 Clear -- 66.9 59.0 76% NA NA 29.92 1013.2
03:56 AM EDT 6.9 10.00 Clear -- 68.0 60.1 76% NA NA 29.91 1012.9
01:56 AM EDT SW 6.9 10.00 Clear -- 72.0 60.1 66% NA 72.0 29.94 1013.9
12:56 AM EDT 6.9 10.00 Clear -- 73.9 60.1 62% NA 73.9 29.95 1014.2
11:56 PM EDT 8.1 10.00 Clear -- 73.0 62.1 68% NA 73.2 29.95 1014.2
10:56 PM EDT S 5.8 10.00 Clear -- 73.9 63.0 69% NA 74.3 29.94 1013.9
09:56 PM EDT S 6.9 10.00 Clear -- 73.9 62.1 66% NA 74.1 29.94 1013.9
08:56 PM EDT S 5.8 10.00 Clear -- 75.0 61.0 62% NA 75.2 29.94 1013.6
07:56 PM EDT S 6.9 10.00 Clear -- 77.0 61.0 58% NA 77.2 29.94 1013.6
06:56 PM EDT S 8.1 G 18.3 10.00 Clear -- 80.1 61.0 52% NA 81.1 29.94 1013.6
05:56 PM EDT 8.1 10.00 Clear -- 82.0 66.0 58% NA 84.2 29.92 1013.2
04:56 PM EDT 9.2 G 20.8 10.00 Clear -- 87.1 66.0 50% NA 89.4 29.92 1013.2
03:56 PM EDT S 8.1 10.00 Clear -- 88.0 68.0 52% NA 91.6 29.94 1013.6
02:56 PM EDT 9.2 10.00 Clear -- 89.1 69.1 52% NA 93.7 29.95 1014.2

Regional Weather Observation

(KARW)


F

BEAUFORT MCAS (KNBC)

Mostly Cloudy
80.1 F

HILTON HEAD (KHXD)

Clear
78.8 F

WALTERBORO (KRBW)

Mostly Cloudy
73.4 F

CHARLESTON/EXEC (KJZI)

Mostly Clear
80.6 F

ALLENDALE CNTY (KAQX)

Cloudy
69.8 F
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