Whatcom County, WA Weather Forecast
County weather hub
Partly Sunny
Compare major city weather across Whatcom County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Partly sunny, with a high near 51.
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
- May 30 to May 31, 2026
- Latest sync
- May 25, 2026 5:39 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Whatcom County
Sunday looks like the warmest upcoming period in Whatcom County at 54 degrees F.
Saturday Night is the coolest period ahead with temperatures near 38 degrees F.
The strongest winds are forecast for Saturday at about 5 to 10 mph SW.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- May 25, 2026 5:39 PM PDT
- Coverage
- 3 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
Partly cloudy, with a low around 38.
A slight chance of rain between 11am and 5pm. Mostly sunny, with a high near 54.
Partly cloudy, with a low around 40.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
May 30
|
Partly Sunny
|
51°F |
5 to 10 mph
SW
|
|
Saturday Night
May 30
|
Partly Cloudy
|
38°F |
3 to 10 mph
S
|
|
Sunday
May 31
|
Slight Chance Light Rain
|
54°F |
3 to 9 mph
SW
|
|
Sunday Night
May 31
|
Partly Cloudy
|
40°F |
3 to 9 mph
NNE
|
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.
