Northwest Island Weather Forecast
- 49
- 62
Mostly Sunny
- 49
- 62
Mostly Sunny
- 52
- 63
Rain
- 49
- 62
Chance Rain
- 50
- 62
Chance Rain
- 51
- 62
Chance Rain
- 50
- 62
Chance Rain
Today 18 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties
Partly sunny until late afternoon then becoming sunny. Highs in the mid 60s to lower 70s. Light wind becoming northwest 10 to 15 Mph in the afternoon.
Tonight 18 Sep Lowlands of Western Skagit and Northwestern Snohomish Counties
Mostly clear. Lows near 50. Northwest wind to 10 Mph in the evening becoming light.
Northwest Island Temperature Statistics
September Temperature
Whidbey Island Naval Air Station - Ault Field (4.3 miles)
Lowest 16 September, 2025
48 °FAverage September
57.3 °FHighest 16 September, 2025
86 °F
Climate (2020–Present)
Whidbey Island Naval Air Station - Ault Field (4.3 miles)
Average Low 2020–2025
44.6 °FAverage 2020–2025
50.1 °FAverage High 2020–2025
56.1 °F