Arlington Junction, WA Weather Forecast
Local 7-day forecast
Patchy Fog then Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Arlington Junction, WA in one place.
Patchy fog and a slight chance of rain before 7am, then a chance of rain and patchy fog between 7am and 10am. Partly sunny, with a high near 69. Northwest wind 0 to 6 mph. Chance of precipitation is 30%.
Local Weather Overview
This forecast page for Arlington Junction, 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 9:36 PM PDT.
The active forecast window currently covers Sep 15 to Sep 21, 2026 for Arlington Junction, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 15 to Sep 21, 2026
- Latest sync
- Sep 14, 2026 9:36 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Arlington Junction
Thursday looks like the warmest upcoming period in Arlington Junction at 77 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 46 degrees F.
The strongest winds are forecast for Tuesday at about 0 to 6 mph NW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 14, 2026 9:36 PM PDT
- Coverage
- 7 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
Patchy fog after 5am. Mostly clear. Low around 46, with temperatures rising to around 48 overnight. North northeast wind around 5 mph.
Patchy fog before 8am. Sunny, with a high near 76. Northwest wind 1 to 6 mph.
Mostly clear, with a low around 49. North wind 1 to 6 mph.
Sunny, with a high near 77.
Mostly clear, with a low around 50.
Sunny, with a high near 75.
Partly cloudy, with a low around 50.
Partly sunny, with a high near 73.
Partly cloudy, with a low around 49.
Mostly sunny, with a high near 74.
Partly cloudy, with a low around 49.
A chance of rain after 5pm. Partly sunny, with a high near 73.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Sep 15
|
Patchy Fog then Partly Sunny
|
69°F |
0 to 6 mph
NW
|
|
Tuesday Night
Sep 15
|
Mostly Clear then Patchy Fog
|
46°F |
5 mph
NNE
|
|
Wednesday
Sep 16
|
Patchy Fog then Sunny
|
76°F |
1 to 6 mph
NW
|
|
Wednesday Night
Sep 16
|
Mostly Clear
|
49°F |
1 to 6 mph
N
|
|
Thursday
Sep 17
|
Sunny
|
77°F |
1 to 5 mph
NW
|
|
Thursday Night
Sep 17
|
Mostly Clear
|
50°F |
0 to 5 mph
ENE
|
|
Friday
Sep 18
|
Sunny
|
75°F |
3 mph
S
|
|
Friday Night
Sep 18
|
Partly Cloudy
|
50°F |
0 to 3 mph
NE
|
|
Saturday
Sep 19
|
Partly Sunny
|
73°F |
1 to 5 mph
WSW
|
|
Saturday Night
Sep 19
|
Partly Cloudy
|
49°F |
1 to 5 mph
NNW
|
|
Sunday
Sep 20
|
Mostly Sunny
|
74°F |
1 to 5 mph
NNW
|
|
Sunday Night
Sep 20
|
Partly Cloudy
|
49°F |
1 to 5 mph
NE
|
|
Monday
Sep 21
|
Partly Sunny then Chance Light Rain
|
73°F |
1 to 5 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Arlington Junction.