A broad Canadian surface high pressure system settled over the state for the start of the week. Cool morning temperatures, low humidity and clear skies were reported statewide. Monday's low temperature was 53 degrees on Sassafras Mountain. NWS COOP sites at Caesars Head, Walhalla, and Table Rock reported a low temperature of 57 degrees. The National Weather Service Office in Greer reported a morning temperature of 64 degrees and a dew point temperature of 51 degrees. Some relief was also felt at the coast where Hilton Head recorded a morning temperature of 75 albeit with a 75-degree dew point. Last week, Hilton Head observed a Monday morning temperature of 86 degrees coupled with a 81-degree dew point.
Rainfall was scarce to widely scattered during the first four days of the week. The Rock Hill Airport reported a trace of rain on Tuesday. On Thursday morning the Caesars Head COOP station reported 0.04 inches of rain. The Jocassee 8 WNW COOP site reported Friday morning that 1.9 inches of rain fell during the previous 24 hours.
Thursday, high pressure migrated offshore initiating a southwesterly flow of sub-tropical air over the state for a more typical summer temperature and humidity regime. The Lake Greenwood COOP site reported a Thursday morning minimum temperature of 56 degrees. A high temperature of 92 degrees was recorded at the Lake City COOP on Thursday
With a very moist, convergent, southwesterly flow at the surface , a weakening trough aloft triggered lines of varying convection that swept over the state on Friday. Precipitation ranged from light drizzle to heavy rain from strong thunderstorm cells. The Pelion 4 COOP site reported 2.77 inches of rain during a 24-hour period ending 7:00 a.m. on Saturday morning. The Bermuda High strengthened over the state Saturday and Sunday yielding above normal summer temperatures, abundant humidity, and scattered afternoon thunderstorm activity for the start of July.
The highest official temperatures reported was 95 degrees at Cades, Georgetown, Orangeburg, Barnwell and Jamestown on July 2.
The lowest official temperature reported was 53 degrees on Sassafras Mountain on June 26.
The heaviest official 24-hour rainfall reported was 2.77 inches at Pelion 4 N ending July 1.
The state average rainfall for the seven-day period was 1.4 inches.
| Weekly | Jan 1 | Departure | |
|---|---|---|---|
| Anderson AP | 1.18 | 31.13 | 8.8 |
| Greer AP | 1.33 | 29.60 | 6.1 |
| Charlotte, NC AP | 1.12 | 26.01 | 5.1 |
| Columbia Metro AP | 0.85 | 29.41 | 7.9 |
| Orangeburg AP | 0.61 | 19.99 | -3.1 |
| Augusta, GA Bush AP | 0.58 | 23.63 | 1.1 |
| Florence AP | 1.51 | 19.54 | -0.7 |
| N Myrtle Beach AP | 0.06 | 16.92 | -5.5 |
| Charleston AP | 2.23 | 21.72 | -0.7 |
| Savannah, GA AP | 4.58 | 31.01 | 8.5 |
Weekly rainfall totals ending midnight Sunday.
4-inch depth soil temperature: Clinton 76 degrees. Columbia 81 degrees. Barnwell 75 degrees. Mullins 76 degrees.
South Carolina river stages were normal.
Charleston Harbor water temperature: 84 degrees.
Fripp Nearshore Buoy (Station 41033): 84 degrees.
