Williston Weather Forecast
- 76
- 96
Becoming Sunny
- 75
- 96
Slight Chance Thunderstorms
- 72
- 95
Chance Thunderstorms
- 70
- 90
Thunderstorms Likely
- 69
- 83
Thunderstorms Likely
- 68
- 87
Chance Thunderstorms
Today 9 Jul Barnwell
Sunny. Highs in the upper 90s. West Winds 5 to 10 Mph.
Tonight 9 Jul Barnwell
Mostly clear. Lows in the upper 70s. Southwest Winds around 5 Mph.
Williston Temperature Statistics
July Temperature
Barnwell Regional Airport (9.9 miles)
Lowest 2 July, 2026
69.8 °FAverage July
85 °FHighest 4 July, 2026
98.6 °F
Climate (2021–2026)
Barnwell Regional Airport (9.9 miles)
Average Low 2021–2026
54.5 °FAverage 2021–2026
65 °FAverage High 2021–2026
76.8 °F