Weather for Summerville, South Carolina
Current Weather
Humidity: 100%
Feels Like: 89.2°F
Wind: S 5.6 mph
Wind Gusts: 9.5 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast
Fri
H: 99°F
L: 78°F
Sat
H: 101°F
L: 80°F
Sun
H: 101°F
L: 84°F
Mon
H: 100°F
L: 83°F
Tue
H: 92°F
L: 76°F
Air Quality
Nitrogen Dioxide: 10.36 μg/m3
Sulphur Dioxide: 6.11 μg/m3
Ozone: 105 μg/m3
Astronomical
Sun Transit: 1:26 PM
Sunset: 8:29 PM
Daylight: 14 hrs 3 mins
Moon Transit: 7:29 AM
Moonset: 2:29 PM
Moon Phase: Last Quarter
Moon Illumination: 33.4%
Best Times for Fishing or Hunting
Major Periods
6:59 AM - 9:29 AM8:47 PM - 11:17 PM
Minor Periods
1:59 PM - 3:29 PM12:10 AM - 1:40 AM
Action Rating: 3 out of 5
Special Weather Statement issued July 18 at 12:24PM EDT by NWS Charleston SC
Effective: Fri July 18, 2025, 12:24 PM
Expires: Fri July 18, 2025, 6:00 PM
Temperatures rising into the 90s combined with high humidity will produce heat indices of 107 to 109 today, especially along and east of I-95. The highest values will occur during the afternoon hours. If heat indices are expected to remain above 108 for 2 hours or more, a Heat Advisory will be issued.
Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water.
Special Weather Statement issued July 18 at 12:24PM EDT by NWS Charleston SC
Effective: Fri July 18, 2025, 12:24 PM
Expires: Fri July 18, 2025, 6:00 PM
Temperatures rising into the 90s combined with high humidity will produce heat indices of 107 to 109 today, especially along and east of I-95. The highest values will occur during the afternoon hours. If heat indices are expected to remain above 108 for 2 hours or more, a Heat Advisory will be issued.
Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water.
Weather Forecast
Average Temperature: 86.7°F
Average Humidity: 77%
Wind: 8.9 mph
UV Index: 2.3
Air Quality
Nitrogen Dioxide: 6.22 μg/m3
Sulphur Dioxide: 3.51 μg/m3
Ozone: 68.16 μg/m3
Astronomical
Sun Transit: 1:26 PM
Sunset: 8:29 PM
Daylight: 14 hrs 3 mins
Moon Transit: 7:29 AM
Moonset: 2:29 PM
Moon Phase: Last Quarter
Moon Illumination: 33.4%
Best Times for Fishing or Hunting
Major Periods
6:59 AM - 9:29 AM8:47 PM - 11:17 PM
Minor Periods
1:59 PM - 3:29 PM12:10 AM - 1:40 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 89.8°F
Average Humidity: 66%
Wind: 9.4 mph
UV Index: 2.8
Air Quality
Nitrogen Dioxide: 7.1 μg/m3
Sulphur Dioxide: 4.96 μg/m3
Ozone: 107.6 μg/m3
Astronomical
Sun Transit: 1:27 PM
Sunset: 8:28 PM
Daylight: 14 hrs 2 mins
Moon Transit: 8:22 AM
Moonset: 3:40 PM
Moon Phase: Last Quarter
Moon Illumination: 23.2%
Best Times for Fishing or Hunting
Major Periods
7:52 AM - 10:22 AM12:00 AM - 12:00 AM
Minor Periods
3:10 PM - 4:40 PM12:44 AM - 2:14 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 91.7°F
Average Humidity: 59%
Wind: 9.6 mph
UV Index: 2.1
Air Quality
Nitrogen Dioxide: 7.06 μg/m3
Sulphur Dioxide: 4.36 μg/m3
Ozone: 108 μg/m3
Astronomical
Sun Transit: 1:27 PM
Sunset: 8:28 PM
Daylight: 14 hrs 1 mins
Moon Transit: 9:20 AM
Moonset: 4:53 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.4%
Best Times for Fishing or Hunting
Major Periods
8:50 AM - 11:20 AM12:00 AM - 12:00 AM
Minor Periods
4:23 PM - 5:53 PM1:26 AM - 2:56 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 91.7°F
Average Humidity: 59%
Wind: 8.5 mph
UV Index: 2.6
Air Quality
Nitrogen Dioxide: 11.05 μg/m3
Sulphur Dioxide: 5.48 μg/m3
Ozone: 116.4 μg/m3
Astronomical
Sun Transit: 1:27 PM
Sunset: 8:27 PM
Daylight: 14 hrs mins
Moon Transit: 10:22 AM
Moonset: 6:03 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.4%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM9:52 AM - 12:22 AM
Minor Periods
5:33 PM - 7:03 PM2:16 AM - 3:46 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 81.5°F
Average Humidity: 78%
Wind: 8.9 mph
UV Index: 2.8
Air Quality
Nitrogen Dioxide: 17.99 μg/m3
Sulphur Dioxide: 8.11 μg/m3
Ozone: 85.31 μg/m3
Astronomical
Sun Transit: 1:27 PM
Sunset: 8:26 PM
Daylight: 13 hrs 59 mins
Moon Transit: 11:26 AM
Moonset: 7:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.6%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:56 AM - 1:26 PM
Minor Periods
6:36 PM - 8:06 PM3:15 AM - 4:45 AM
Action Rating: 3 out of 5