Whatcom

What is the climate like in Whatcom?

The best time to visit Whatcom is typically July – August, with trip comfort peaking in July (7.9/10). Whatcom is warmest in August, when daily highs average 75°F (24°C), and coolest in February, when lows fall to about 32°F (0°C). The wettest month is typically November and the driest is July; the year sees roughly 79 in (1996 mm) of precipitation.

• Best time to visitJuly – August — comfort peaks in July (7.9/10)
• Warmest monthAugust — average high 75°F (24°C)
• Coolest monthFebruary — average low 32°F (0°C)
• Wettest monthNovember (12 in (294 mm))
• Driest monthJuly (1.5 in (39 mm))
• Annual precipitation79 in (1996 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromClearbrook, 10 km away (1903-2026)