Henderson Weather Forecast
- 65
- 81
Rain Showers
- 60
- 75
Rain Showers Likely
- 54
- 71
Rain Showers Likely
- 52
- 67
Chance Rain Showers
- 55
- 69
Partly Sunny
- 52
- 71
Partly Sunny
- 52
- 69
Partly Sunny
Today 23 Aug Jefferson
Mostly sunny Early, then mostly cloudy with a chance of Showers late. Highs Ranging from the upper 70s on the tug hill to the lower 80s across the lower Elevations. South Winds 10 to 15 Mph, becoming southwest 5 to 10 Mph. Chance of rain 30 percent.
Tonight 23 Aug Jefferson
Showers with a chance of Thunderstorms this Evening, then Showers after midnight. Lows Ranging from the lower 60s across the tug hill to the mid 60s along the lake Ontario shore. South Winds 5 to 10 Mph, increasing to 10 to 15 Mph. Chance of rain 80 percent.
Henderson Temperature Statistics
August Temperature
Watertown, Watertown International Airport (12.4 miles)
Lowest 2 August, 2025
43.6 °FAverage August
70.3 °FHighest 12 August, 2025
91.7 °F
Climate (2020–Present)
Watertown, Watertown International Airport (12.4 miles)
Average Low 2020–2025
38.9 °FAverage 2020–2025
48.7 °FAverage High 2020–2025
57.7 °F