Northern Island Weather Forecast
- 69
- 76
Chance Rain Showers
- 64
- 81
Rain Showers
- 60
- 79
Chance Rain Showers
- 60
- 76
Mostly Sunny
- 59
- 71
Rain Showers Likely
- 61
- 73
Chance Rain Showers
- 62
- 73
Chance Rain Showers
Today 14 Jul Knox
Mostly cloudy with a chance of Showers this Morning, then partly sunny with a slight chance of Showers this afternoon. Warm with Highs in the upper 80s. Southwest Winds 10 to 15 Mph. Chance of rain 50 percent. Heat index Values in the mid 90s this afternoon.
Tonight 14 Jul Knox
Partly cloudy. Scattered Thunderstorms with a chance of Showers this Evening, then a chance of Showers with isolated Thunderstorms after midnight. Some Thunderstorms may be severe with damaging Winds and large hail. Some Thunderstorms may be severe with damaging Winds and large hail. Lows in the lower 70s. Southwest Winds around 10 Mph with Gusts up to 20 Mph this Evening, becoming light and variable. Chance of rain 50 percent.
Northern Island Temperature Statistics
July Temperature
Rockland, Knox County Regional Airport (8.1 miles)
Lowest 12 July, 2026
54 °FAverage July
71.4 °FHighest 2 July, 2026
91.9 °F
Climate (2021–2026)
Rockland, Knox County Regional Airport (8.1 miles)
Average Low 2021–2026
39.5 °FAverage 2021–2026
47.6 °FAverage High 2021–2026
54.8 °F