Dexter Weather Forecast
- 66
- 79
Rain Showers Likely
- 51
- 76
Chance Rain Showers
- 47
- 67
Mostly Sunny
- 59
- 71
Chance Rain Showers
- 60
- 76
Chance Rain Showers
- 55
- 76
Chance Rain Showers
- 50
- 70
Partly Sunny
Today 12 Sep Jefferson
Mostly sunny. Highs Ranging from the mid 70s on the tug hill to the upper 70s across the lower Elevations. South Winds 10 to 15 Mph.
Tonight 12 Sep Jefferson
Showers likely with a chance of Thunderstorms through the early overnight. Showers likely late. Warm with Lows Ranging from the lower 60s on the tug hill to the mid 60s across the lower Elevations. South Winds 5 to 10 Mph, increasing to 10 to 15 Mph. Chance of rain 70 percent.
Dexter Temperature Statistics
September Temperature
Watertown, Watertown International Airport (1.2 miles)
Lowest 7 September, 2026
47.6 °FAverage September
67.3 °FHighest 2 September, 2026
83.6 °F
Climate (2021–2026)
Watertown, Watertown International Airport (1.2 miles)
Average Low 2021–2026
38.2 °FAverage 2021–2026
48.2 °FAverage High 2021–2026
57.6 °F