Southwick Beach State Park Weather Forecast
- 62
- 79
Chance Rain Showers
- 52
- 77
Rain Showers
- 44
- 60
Slight Chance Rain Showers
- 44
- 56
Partly Sunny
- 49
- 64
Chance Rain Showers
- 51
- 66
Chance Rain Showers
Today 18 May Jefferson
Cloudy with a chance of Showers Early, then mostly sunny from late morning on. Warm with Highs Ranging from the upper 70s along the lake Ontario shore to the mid 80s inland. Southeast Winds 5 to 10 Mph, becoming southwest 10 to 15 Mph. Chance of rain 30 percent.
Tonight 18 May Jefferson
Partly cloudy with a chance of Showers in the Evening, then mostly cloudy with a chance of Showers overnight. Warm with Lows Ranging from the lower 60s along the lake Ontario shore to the mid 60s across the tug hill. Southwest Winds 10 Mph or less. Chance of rain 40 percent.
Southwick Beach State Park Temperature Statistics
May Temperature
Watertown, Watertown International Airport (18 miles)
Lowest 1 May, 2026
29.6 °FAverage May
48.1 °FHighest 4 May, 2026
70.6 °F
Climate (2021–Present)
Watertown, Watertown International Airport (18 miles)
Average Low 2021–2026
38.4 °FAverage 2021–2026
48.3 °FAverage High 2021–2026
57.6 °F