Lamar, SC Weather Forecast & Alerts

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

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Current Conditions — Lamar, SC

HARTSVILLE (KHVS)

Clear

NULL F
Humidity:%
Wind Speed: 0.0 mph
Barometer:30.05 in
Dewpoint: F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 22 2026, 08:15 PM EDT
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5-Day Forecast — Lamar, SC

Wednesday

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

High 87 °F
Forecast Missing
Thursday
Night
Low 57 °F
Mostly Clear
Friday

High 89 °F
Mostly Sunny
Friday
Night
Low 59 °F
Mostly Clear
Saturday

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

High 80 °F
Chance of T-storms

Detailed Forecast — Lamar, SC

Wednesday
Sunny. High near 84°F. Wind 6 to 9 mph, with gusts as high as 15 mph.
Wednesday Night
Mostly Clear. Low around 55°F. Wind 3 to 6 mph, with gusts as high as 10 mph.
Thursday
Sunny. High near 87°F. Wind 2 to 5 mph, with gusts as high as 9 mph.
Thursday Night
Mostly Clear. Low around 57°F. Wind 3 to 6 mph, with gusts as high as 10 mph.
Friday
Mostly Sunny. High near 89°F. Wind 5 to 6 mph, with gusts as high as 13 mph.
Friday Night
Mostly Clear. Low around 59°F. Wind 3 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 16 mph.
Saturday Night
Chance of Thunderstorms. Low around 60°F. Wind 2 to 6 mph, with gusts as high as 10 mph.
Sunday
Chance of Thunderstorms. High near 80°F. Wind 5 to 8 mph, with gusts as high as 14 mph.
Sunday Night
Chance of Showers. Low around 55°F. Wind 5 to 6 mph, with gusts as high as 10 mph.
Monday
Slight Chance of Showers. High near 77°F. Wind 6 to 7 mph, with gusts as high as 13 mph.
Monday Night
Chance of Rain. Low around 59°F. Wind 3 to 5 mph, with gusts as high as 9 mph.
Tuesday
Chance of Thunderstorms. High near 84°F. Wind 6 to 10 mph, with gusts as high as 17 mph.
SC Radar
Current Radar • SC
Day 1 Outlook • April 23, 2026

Observation History — Lamar, 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)
08:15 PM EDT 0.0 10.00 Clear -- NULL % NA NA 30.05 1017.6
07:55 PM EDT 0.0 10.00 Clear -- NULL 32.0 % NA NA 30.05 1017.6
07:35 PM EDT 0.0 10.00 Clear -- 77.0 % NA NA 30.04 1017.3
07:15 PM EDT SW 5.8 10.00 Clear -- 78.8 % NA NA 30.05 1017.6
06:55 PM EDT 5.8 10.00 Clear -- 80.6 32.0 17% NA 79.2 30.05 1017.6
06:35 PM EDT 5.8 10.00 Clear -- 80.6 % NA NA 30.05 1017.6
06:15 PM EDT 5.8 G 13.9 10.00 Clear -- 82.4 32.0 16% NA 80.1 30.05 1017.6
05:55 PM EDT 9.2 10.00 Clear -- 82.4 32.0 16% NA 80.1 30.05 1017.6
05:35 PM EDT 6.9 G 16.1 10.00 Clear -- 82.4 % NA NA 30.05 1017.6
05:15 PM EDT 5.8 G 15.0 10.00 Clear -- 84.2 33.8 16% NA 81.3 30.06 1018.0
04:55 PM EDT 5.8 G 15.0 10.00 Clear -- 84.2 35.6 18% NA 81.3 30.06 1018.0
04:35 PM EDT SW 5.8 G 16.1 10.00 Clear -- 84.2 35.6 18% NA 81.3 30.07 1018.3
04:15 PM EDT 5.8 G 15.0 10.00 Clear -- 82.4 39.2 22% NA 80.2 30.07 1018.3
03:35 PM EDT 10.00 NULL -- 84.2 41.0 22% NA 81.5 30.09 1019.0
03:15 PM EDT 6.9 G 13.9 10.00 Clear -- 82.4 42.8 25% NA 80.4 30.12 1019.7
02:50 PM EDT 6.9 G 15.0 10.00 Clear -- 82.4 41.0 23% NA 80.2 30.12 1020.0
02:35 PM EDT 4.7 G 16.1 10.00 Clear -- 82.4 41.0 23% NA 80.2 30.13 1020.3
01:55 PM EDT W 8.1 G 18.3 10.00 Clear -- 80.6 42.8 26% NA 79.5 30.15 1021.0
01:35 PM EDT SW 8.1 10.00 Clear -- 80.6 46.4 30% NA 79.7 30.16 1021.3
01:15 PM EDT SW 5.8 G 16.1 10.00 Clear -- 78.8 46.4 32% NA 77.9 30.17 1021.7
12:35 PM EDT 9.2 10.00 Clear -- 77.0 46.4 34% NA 75.9 30.19 1022.4
12:15 PM EDT W 10.3 G 16.1 10.00 Clear -- 77.0 44.6 32% NA 75.9 30.20 1022.7
11:55 AM EDT W 9.2 10.00 Clear -- 75.2 44.6 34% NA 73.9 30.21 1023.0
11:35 AM EDT 8.1 G 15.0 10.00 Clear -- 75.2 44.6 34% NA 73.9 30.22 1023.4

Regional Weather Observation

HARTSVILLE (KHVS)

Clear
NULL F

SUMTER (KSMS)

Clear
69.8 F

CAMDEN WOODWARD (KCDN)

Clear
77.0 F

DARLINGTON CNTY (KUDG)

Clear
71.6 F

CHERAW (KCQW)

Clear
73.4 F

LANCASTER (KLKR)

Clear
73.4 F
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