Blenheim, SC Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Blenheim, SC.

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Current Conditions — Blenheim, SC

CHERAW (KCQW)

Clear

68.0 F
Humidity:32%
Wind Speed:W 4.7 mph
Barometer:30.05 in
Dewpoint:37.4 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 22 2026, 09:35 PM EDT
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5-Day Forecast — Blenheim, SC

Wednesday

High 84 °F
Forecast Missing
Wednesday
Night
Low 55 °F
Mostly Clear
Thursday

High 87 °F
Forecast Missing
Thursday
Night
Low 59 °F
Mostly Clear
Friday

High 89 °F
Partly Sunny
Friday
Night
Low 60 °F
Partly Cloudy
Saturday

High 89 °F
Chance of T-storms
Saturday
Night
Low 60 °F
T-storms Likely
Sunday

High 80 °F
Chance of T-storms

Detailed Forecast — Blenheim, SC

Wednesday
Sunny. High near 84°F. Wind 7 to 10 mph, with gusts as high as 17 mph.
Wednesday Night
Mostly Clear. Low around 55°F. Wind 3 to 5 mph, with gusts as high as 10 mph.
Thursday
Sunny. High near 87°F. Wind 3 to 6 mph, with gusts as high as 9 mph.
Thursday Night
Mostly Clear. Low around 59°F. Wind 3 to 6 mph, with gusts as high as 9 mph.
Friday
Partly Sunny. High near 89°F. Wind 5 to 7 mph, with gusts as high as 13 mph.
Friday Night
Partly Cloudy. Low around 60°F. Wind 5 to 6 mph, with gusts as high as 10 mph.
Saturday
Chance of Thunderstorms. High near 89°F. Wind 5 to 9 mph, with gusts as high as 15 mph.
Saturday Night
Thunderstorms Likely. Low around 60°F. Wind 1 to 5 mph, with gusts as high as 9 mph.
Sunday
Chance of Thunderstorms. High near 80°F. Wind 3 to 8 mph, with gusts as high as 14 mph.
Sunday Night
Partly Cloudy. Low around 53°F. Wind around 6 mph, with gusts as high as 10 mph.
Monday
Slight Chance of Rain Showers. High near 80°F. Wind around 7 mph, with gusts as high as 12 mph.
Monday Night
Chance of Rain. Low around 59°F. Wind 2 to 5 mph, with gusts as high as 8 mph.
Tuesday
Thunderstorms Likely. High near 82°F. Wind 5 to 10 mph, with gusts as high as 18 mph.
Tuesday Night
Scattered Thunderstorms Likely. Low around 59°F. Wind 2 to 3 mph, with gusts as high as 7 mph.
SC Radar
Current Radar • SC
Day 1 Outlook • April 23, 2026

Observation History — Blenheim, SC

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)
09:35 PM EDT W 4.7 10.00 Clear -- 68.0 37.4 32% NA NA 30.05 1017.6
09:15 PM EDT W 4.7 10.00 NULL -- 69.8 37.4 31% NA NA 30.05 1017.6
08:55 PM EDT W 4.7 10.00 Clear -- 71.6 35.6 27% NA 69.8 30.05 1017.6
08:35 PM EDT 4.7 10.00 Clear -- 71.6 37.4 29% NA 69.8 30.04 1017.3
08:15 PM EDT 4.7 10.00 Clear -- 73.4 35.6 25% NA 71.6 30.03 1016.9
07:55 PM EDT 4.7 10.00 Clear -- 75.2 35.6 24% NA 73.6 30.03 1016.9
07:35 PM EDT W 4.7 10.00 Clear -- 77.0 35.6 22% NA 75.4 30.03 1016.9
07:15 PM EDT W 6.9 10.00 Clear -- 80.6 35.6 20% NA 79.3 30.03 1016.9
06:55 PM EDT W 6.9 10.00 Clear -- 82.4 35.6 19% NA 80.1 30.03 1016.9
06:35 PM EDT W 6.9 10.00 Clear -- 82.4 35.6 19% NA 80.1 30.03 1016.9
06:15 PM EDT 12.8 10.00 Clear -- 84.2 33.8 16% NA 81.3 30.04 1017.3
05:55 PM EDT W 11.4 10.00 Clear -- 84.2 33.8 16% NA 81.3 30.04 1017.3
05:35 PM EDT 8.1 G 17.2 10.00 Clear -- 84.2 33.8 16% NA 81.3 30.04 1017.3
05:15 PM EDT NW 10.3 G 17.2 10.00 Clear -- 84.2 33.8 16% NA 81.3 30.04 1017.3
04:55 PM EDT 13.9 10.00 Clear -- 86.0 33.8 16% NA 82.6 30.04 1017.3
04:35 PM EDT 10.3 G 19.7 10.00 Clear -- 86.0 33.8 16% NA 82.6 30.05 1017.6
04:15 PM EDT W 11.4 10.00 NULL -- 84.2 32.0 15% NA 81.3 30.06 1018.0
03:55 PM EDT NW 9.2 10.00 Clear -- 84.2 33.8 16% NA 81.3 30.07 1018.3
03:35 PM EDT 8.1 10.00 NULL -- 84.2 33.8 16% NA 81.3 30.08 1018.6
03:15 PM EDT W 12.8 10.00 Clear -- 84.2 35.6 18% NA 81.3 30.09 1019.0
02:55 PM EDT W 11.4 G 18.3 10.00 Clear -- 84.2 35.6 18% NA 81.3 30.10 1019.3
02:35 PM EDT 10.3 10.00 Clear -- 84.2 35.6 18% NA 81.3 30.12 1020.0
02:15 PM EDT 5.8 G 16.1 10.00 Clear -- 82.4 % NA NA 30.13 1020.3
01:55 PM EDT NW 9.2 G 16.1 10.00 Clear -- 82.4 41.0 23% NA 80.2 30.14 1020.7

Regional Weather Observation

CHERAW (KCQW)

Clear
68.0 F

ROCKINGHAM (KRCZ)

Clear
71.4 F

MARLBORO CNTY (KBBP)

Clear
66.2 F

DARLINGTON CNTY (KUDG)

Clear
68.0 F

MAXTON (KMEB)

Clear
68.0 F

HARTSVILLE (KHVS)

Mostly Clear
68.0 F
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