Lummi Island Weather Forecast
- 46
- 56
Slight Chance Rain
- 44
- 56
Partly Sunny
- 45
- 58
Mostly Sunny
- 45
- 61
Mostly Sunny
- 45
- 60
Mostly Sunny
- 47
- 60
Partly Sunny
Today 22 Apr Lowlands of Western Whatcom County
Cloudy with a chance of rain in the Morning, then partly sunny with a slight chance of rain in the late morning and early afternoon. Mostly sunny late in the afternoon. Highs in the mid 50s to lower 60s. Southwest wind to 10 Mph increasing to 10 to 15 Mph in the afternoon.
Tonight 22 Apr Lowlands of Western Whatcom County
Partly cloudy. A slight chance of rain after midnight. Lows in the mid to upper 40s. South wind 10 to 15 Mph.
Lummi Island Temperature Statistics
April Temperature
Bellingham, Bellingham International Airport (8.1 miles)
Lowest 8 April, 2026
31.6 °FAverage April
48.9 °FHighest 19 April, 2026
70 °F
Climate (2021–Present)
Bellingham, Bellingham International Airport (8.1 miles)
Average Low 2021–2026
44 °FAverage 2021–2026
51.4 °FAverage High 2021–2026
59.1 °F