Upstate South Carolina will see a short-lived break from midsummer heat early this week, as a northeasterly low-level flow ushers in cloud cover, showers and the potential for severe storms, the National Weather Service says. Daytime highs are expected to run about 10 degrees or more below normal before temperatures rebound to typical summer levels by the weekend.
What to expect this week
The current pattern places the region beneath a northeast low‑level flow that is steering several rounds of showers and thunderstorms across the area. Forecast guidance indicates:
- Daytime highs in the high 70s to low 80s through midweek — roughly a 10‑degree departure from typical July readings.
- Nights dipping into the 60s on July 13–14.
- Lingering showers, especially across eastern and southern counties, fueled by an east‑southeast upward flow overnight.
- A renewed warming trend toward the weekend with highs climbing back into the high 80s to low 90s.
The setup will keep skies unsettled through the early part of the week, but meteorologists expect conditions to become drier and sunnier by the latter half of the week.
Severe storm risk and timing
Forecasters note a threat of one or more severe storms, particularly south of I‑85, with the highest concern centered on evening hours for July 13. Storms in this pattern can produce heavy rain, gusty winds and lightning.
| Period | Forecast |
|---|---|
| July 13–14 | Highs: High 70s–Low 80s; lows: 60s; scattered showers/storms |
| Late week / Weekend | Highs: High 80s–Low 90s; drier and sunnier |
Impacts and guidance
Residents should prepare for rapid changes in conditions. The cool interval offers temporary relief from heat and humidity, but the risk of strong storms means hazards remain:
- Expect sudden downpours and localized flooding in heavy cells.
- Be ready for strong, potentially damaging gusts and frequent lightning.
- Monitor forecasts if you are south of I‑85, where the severe threat is elevated.
When storms approach, move indoors away from windows and avoid driving through flooded roadways. As the week progresses and temperatures climb back into the upper 80s and low 90s, take standard heat precautions: stay hydrated, limit strenuous outdoor activity during peak afternoon hours, and check on vulnerable neighbors.
Forecasters emphasize the changeable nature of this pattern: the cooler stretch is brief, and seasonable midsummer heat is expected to return by the weekend. Keep an eye on National Weather Service updates for any watches or warnings that may be issued as storms develop.
