Shirley Weather Forecast
- 57
- 81
Sunny
- 44
- 77
Sunny
- 42
- 69
Mostly Sunny
- 45
- 71
Partly Sunny
- 56
- 76
Partly Sunny
- 59
- 83
Slight Chance Rain Showers
- 55
- 79
Slight Chance Rain Showers
Today 18 Sep Northwest Middlesex County
Sunny. Near steady temperature in the upper 70s. West Winds around 5 Mph.
Tonight 18 Sep Northwest Middlesex County
Clear. Lows in the upper 50s. West Winds around 5 Mph.
Shirley Temperature Statistics
September Temperature
Fitchburg, Fitchburg Municipal Airport (5 miles)
Lowest 11 September, 2025
44.1 °FAverage September
63.8 °FHighest 6 September, 2025
84 °F
Climate (2020–Present)
Fitchburg, Fitchburg Municipal Airport (5 miles)
Average Low 2020–2025
41.8 °FAverage 2020–2025
51.9 °FAverage High 2020–2025
61.8 °F