Big Lake, WA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Big Lake, WA in one place.
Mostly sunny, with a high near 61. West southwest wind around 8 mph.
Local Weather Overview
This forecast page for Big Lake, 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: May 18, 2026 3:48 PM PDT.
The active forecast window currently covers May 18 to May 24, 2026 for Big Lake, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 18 to May 24, 2026
- Latest sync
- May 18, 2026 3:48 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Big Lake
Thursday looks like the warmest upcoming period in Big Lake at 69 degrees F.
Tonight is the coolest period ahead with temperatures near 46 degrees F.
The strongest winds are forecast for Wednesday at about 0 to 9 mph NW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- May 18, 2026 3:48 PM PDT
- Coverage
- 8 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. Low around 46, with temperatures rising to around 48 overnight. South wind 2 to 8 mph.
Mostly cloudy, with a high near 62. South southwest wind 2 to 7 mph.
Mostly cloudy, with a low around 46. South wind 2 to 7 mph.
Partly sunny, with a high near 64. Northwest wind 0 to 9 mph.
Partly cloudy, with a low around 47.
Mostly sunny, with a high near 69.
Partly cloudy, with a low around 49.
Mostly sunny, with a high near 68.
Partly cloudy, with a low around 50.
Partly sunny, with a high near 66.
Mostly cloudy, with a low around 48.
A chance of rain after 11am. Partly sunny, with a high near 61.
A chance of rain. Mostly cloudy, with a low around 47.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
May 18
|
Mostly Sunny
|
61°F |
8 mph
WSW
|
|
Tonight
May 18
|
Partly Cloudy
|
46°F |
2 to 8 mph
S
|
|
Tuesday
May 19
|
Mostly Cloudy
|
62°F |
2 to 7 mph
SSW
|
|
Tuesday Night
May 19
|
Mostly Cloudy
|
46°F |
2 to 7 mph
S
|
|
Wednesday
May 20
|
Partly Sunny
|
64°F |
0 to 9 mph
NW
|
|
Wednesday Night
May 20
|
Partly Cloudy
|
47°F |
1 to 9 mph
N
|
|
Thursday
May 21
|
Mostly Sunny
|
69°F |
0 to 7 mph
NW
|
|
Thursday Night
May 21
|
Partly Cloudy
|
49°F |
1 to 7 mph
ENE
|
|
Friday
May 22
|
Mostly Sunny
|
68°F |
1 to 8 mph
WSW
|
|
Friday Night
May 22
|
Partly Cloudy
|
50°F |
1 to 8 mph
SSW
|
|
Saturday
May 23
|
Partly Sunny
|
66°F |
1 to 9 mph
SW
|
|
Saturday Night
May 23
|
Mostly Cloudy
|
48°F |
2 to 9 mph
WSW
|
|
Sunday
May 24
|
Chance Light Rain
|
61°F |
2 to 9 mph
SW
|
|
Sunday Night
May 24
|
Chance Light Rain
|
47°F |
3 to 9 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Big Lake.