Bellingham
Bellingham / Whatcom · Zone 8b · North Sound. 1.4° latitude north of Kent; consistently 2-3 weeks behind on GDD milestones.
Data through June 4, 2026
Season Progress
Cumulative GDD₃₂ year to date. Other stations shown faded for regional context.
Season vs. History
As of June 4, 2026, Bellingham has accumulated 2559.9 GDD₃₂, which is 18% ahead of the 2020–2025 average of 2163 for this date. This season is tracking closest to 2021.
Cumulative GDD₃₂ by day of year. Current season (bold) against 2020–2025 individual years (faded) and their average (dashed).
Soil Temperature
Daily soil temperature at 2-inch depth. Bands: below 40°F (too cold), 40-50°F (cool-season), above 50°F (warm-season activation).
Frost Events
Every night the temperature dropped below 32°F. Color indicates severity: light (28-32°F), moderate (24-28°F), hard (<24°F).
Precipitation
Daily rainfall (bars) and cumulative total (bold line) for Bellingham. Other stations shown faded.
Chill Hours
Cumulative hours below 45°F since January 1. Dashed lines show common fruit tree thresholds.
Dew Point & Disease Risk
Daily average dew point. Watch zone: 50-55°F. Active disease risk above 55°F.
Water Balance
Cumulative precipitation (solid) vs. evapotranspiration (dashed) for Bellingham. When ET crosses above precipitation, start irrigating.
Sunshine Hours
7-day rolling average of daily sunshine. Other stations faded for comparison.
Monthly Summary
| Month | Low | High | Precip | Frost | Spray | GDD₃₂ | Sun hrs |
|---|---|---|---|---|---|---|---|
| Jan | 25.5° | 57° | 7.59" | 3 | 13 | 338.3 | 126.5 |
| Feb | 26° | 59.3° | 4.96" | 5 | 9 | 313.4 | 155.4 |
| Mar | 32.1° | 57.5° | 6.02" | 0 | 10 | 401.7 | 146.6 |
| Apr | 35.5° | 72.9° | 0.87" | 0 | 21 | 586.8 | 296.4 |
| May | 44.5° | 75.8° | 0.89" | 0 | 14 | 796.7 | 312 |
| Jun | 45.9° | 81° | 0" | 0 | 2 | 123 | 48.9 |
Other Stations
Data from the HortGuide station network via Open-Meteo. Your microclimate varies. Updated daily.