Winchester Weather Forecast
- 61
- 79
Mostly Sunny
- 60
- 81
Increasing Clouds
- 69
- 81
Chance Rain Showers
- 63
- 83
Chance Rain Showers
- 57
- 78
Mostly Sunny
- 60
- 77
Partly Sunny
- 63
- 81
Slight Chance Rain Showers
Today 7 Sep Southeast Middlesex
Sunny. Highs in the upper 70s. Northwest Winds around 10 Mph with Gusts up to 20 Mph.
Tonight 7 Sep Southeast Middlesex
Mostly clear this Evening, then becoming partly cloudy. Lows around 60. Northwest Winds around 5 Mph.
Winchester Temperature Statistics
September Temperature
Laurence G Hanscom Field Airport (8.1 miles)
Lowest 5 September, 2026
57 °FAverage September
67 °FHighest 4 September, 2026
84 °F
Climate (2021–2026)
Laurence G Hanscom Field Airport (8.1 miles)
Average Low 2021–2026
41.2 °FAverage 2021–2026
51.6 °FAverage High 2021–2026
61.7 °F