Brennan, WA Weather Forecast
Local 7-day forecast
Areas Of Fog then Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Brennan, WA in one place.
Areas of fog before 9am. Sunny, with a high near 72. Northwest wind 1 to 7 mph.
Local Weather Overview
This forecast page for Brennan, WA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 14, 2026 12:11 PM PDT.
The active forecast window currently covers Sep 16 to Sep 20, 2026 for Brennan, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 20, 2026
- Latest sync
- Sep 14, 2026 12:11 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Brennan
Thursday looks like the warmest upcoming period in Brennan at 73 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 50 degrees F.
The strongest winds are forecast for Wednesday at about 1 to 7 mph NW.
The forecast from Sep 16 through Sep 20 stays mostly dry.
Forecast Details
- Last updated
- Sep 14, 2026 12:11 PM PDT
- Coverage
- 6 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
Mostly clear, with a low around 50.
Sunny, with a high near 73.
Mostly clear, with a low around 52.
Sunny, with a high near 73.
Mostly clear, with a low around 53.
Mostly sunny, with a high near 70.
Partly cloudy, with a low around 51.
Mostly sunny, with a high near 71.
Partly cloudy, with a low around 51.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Areas Of Fog then Sunny
|
72°F |
1 to 7 mph
NW
|
|
Wednesday Night
Sep 16
|
Mostly Clear
|
50°F |
0 to 3 mph
NW
|
|
Thursday
Sep 17
|
Sunny
|
73°F |
0 to 6 mph
WNW
|
|
Thursday Night
Sep 17
|
Mostly Clear
|
52°F |
0 to 3 mph
S
|
|
Friday
Sep 18
|
Sunny
|
73°F |
0 to 5 mph
SSW
|
|
Friday Night
Sep 18
|
Mostly Clear
|
53°F |
0 to 3 mph
SSE
|
|
Saturday
Sep 19
|
Mostly Sunny
|
70°F |
2 to 6 mph
SSW
|
|
Saturday Night
Sep 19
|
Partly Cloudy
|
51°F |
0 to 3 mph
S
|
|
Sunday
Sep 20
|
Mostly Sunny
|
71°F |
0 to 5 mph
SSW
|
|
Sunday Night
Sep 20
|
Partly Cloudy
|
51°F |
0 to 5 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Brennan.