Port Gibson Weather Forecast
- 57
- 79
Chance Thunderstorms
- 55
- 76
Partly Sunny
- 67
- 90
Partly Sunny
- 64
- 89
Chance Thunderstorms
- 45
- 76
Chance Thunderstorms
- 43
- 59
Partly Sunny
Today 16 May Ontario
Sunny through early Afternoon, then mostly cloudy with a chance of Showers and Thunderstorms late. Warm with Highs Ranging from the lower 70s on the Hilltops to the upper 70s across the lower Elevations. Southwest Winds 5 to 10 Mph, increasing to 10 to 15 Mph. Chance of rain 50 percent.
Tonight 16 May Ontario
Mostly cloudy. A chance of Showers and Thunderstorms in the evening. Milder with Lows in the upper 50s. West Winds 10 to 15 Mph, becoming light. Chance of rain 50 percent.
Port Gibson Temperature Statistics
May Temperature
Rochester, Greater Rochester International Airport (26.7 miles)
Lowest 12 May, 2026
33.7 °FAverage May
49.1 °FHighest 4 May, 2026
74.6 °F
Climate (2021–Present)
Rochester, Greater Rochester International Airport (26.7 miles)
Average Low 2021–2026
42.3 °FAverage 2021–2026
50.8 °FAverage High 2021–2026
59.5 °F