St. Helena-
Including the cities of Darlington, Easleyville, Greensburg,
and Montpelier
846 PM CDT Sat Aug 15 2026

...EXTREME HEAT WARNING IN EFFECT FROM 11 AM TO 8 PM CDT SUNDAY...
...EXTREME HEAT WATCH IN EFFECT FROM MONDAY MORNING THROUGH
MONDAY EVENING...

.TONIGHT...Mostly clear. Lows in the mid 70s. Southwest winds
around 5 mph. Heat index values up to 107 early this evening.
.SUNDAY...Sunny. Highs in the upper 90s. Northwest winds around
5 mph. Heat index values up to 110.
.SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows
in the upper 70s. Southwest winds around 5 mph. Heat index values
up to 107 early in the evening.
.MONDAY...Sunny. A slight chance of showers and thunderstorms in
the afternoon. Humid with highs in the upper 90s. West winds
around 5 mph. Chance of rain 20 percent. Heat index values up to
110.
.MONDAY NIGHT...Partly cloudy in the evening, then clearing. Lows
in the upper 70s. Southwest winds around 5 mph. Heat index values
up to 105 early in the evening.
.TUESDAY...Sunny. A slight chance of showers and thunderstorms in
the afternoon. Highs in the upper 90s. Chance of rain 20 percent.
Heat index values up to 110.
.TUESDAY NIGHT...Partly cloudy. A slight chance of showers and
thunderstorms in the evening. Lows in the mid 70s. Chance of rain
20 percent. Heat index values up to 105 early in the evening.
.WEDNESDAY...Sunny. A slight chance of showers and thunderstorms
in the afternoon. Highs in the mid 90s. Chance of rain
20 percent. Heat index values up to 105.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows in the mid 70s.
.THURSDAY...Sunny with a slight chance of showers and
thunderstorms. Highs in the upper 90s. Chance of rain 20 percent.
Heat index values up to 105.
.THURSDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows in the mid 70s.
.FRIDAY...Sunny. A chance of showers and thunderstorms in the
afternoon. Highs in the upper 90s. Chance of rain 30 percent.
Heat index values up to 105.
.FRIDAY NIGHT...Partly cloudy in the evening, then clearing. A
slight chance of thunderstorms in the evening. A slight chance of
showers. Lows in the mid 70s. Chance of rain 20 percent.
.SATURDAY...Sunny. A slight chance of showers and thunderstorms
in the morning, then a chance of showers and thunderstorms in the
afternoon. Highs in the mid 90s. Chance of rain 30 percent.