Whatcom County, WA Weather Forecast
County weather hub
Light Rain Likely
Compare major city weather across Whatcom County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Rain likely. Mostly cloudy, with a high near 44.
County Weather Overview
This county weather page brings together forecast coverage for Whatcom County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 7 of 7 mapped cities in Whatcom County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 13 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 3:37 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Whatcom County
Monday looks like the warmest upcoming period in Whatcom County at 44 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 30 degrees F.
The strongest winds are forecast for Wednesday at about 12 to 16 mph SW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 3:37 PM PDT
- Coverage
- 4 days
- Time zone
- America/Los_Angeles
- Forecast office
- SEW
- Radar station
- KATX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 37.
A chance of snow before 8am, then rain and snow. Mostly cloudy, with a high near 43.
Snow before 8pm, then rain and snow. Cloudy, with a low around 34. New snow accumulation of 3 to 5 inches possible.
Snow. Mostly cloudy, with a high near 42. New snow accumulation of 2 to 4 inches possible.
A chance of snow. Mostly cloudy, with a low around 30. New snow accumulation of less than one inch possible.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Apr 13
|
Light Rain Likely
|
44°F |
5 to 13 mph
SW
|
|
Monday Night
Apr 13
|
Chance Rain And Snow
|
37°F |
7 to 13 mph
SW
|
|
Tuesday
Apr 14
|
Rain And Snow
|
43°F |
7 to 15 mph
SSW
|
|
Tuesday Night
Apr 14
|
Light Snow
|
34°F |
14 mph
SSW
|
|
Wednesday
Apr 15
|
Snow
|
42°F |
12 to 16 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Light Snow
|
30°F |
7 to 15 mph
SSE
|
Major City Forecasts
Live forecast snapshots for major cities across Whatcom County.
Coverage
Forecast coverage currently spans 7 of 7 mapped cities in Whatcom County.
Largest mapped city population in this region: 93,955.
