John Sam Lake, WA Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for John Sam Lake, WA in one place.
Partly sunny, with a high near 72. South southwest wind around 7 mph.
Local Weather Overview
This forecast page for John Sam 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: Jun 2, 2026 6:44 AM PDT.
The active forecast window currently covers Jun 3 to Jun 8, 2026 for John Sam Lake, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 3 to Jun 8, 2026
- Latest sync
- Jun 2, 2026 6:44 AM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in John Sam Lake
Wednesday looks like the warmest upcoming period in John Sam Lake at 72 degrees F.
Friday Night is the coolest period ahead with temperatures near 48 degrees F.
The strongest winds are forecast for Friday at about 3 to 9 mph S.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 2, 2026 6:44 AM 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
A slight chance of rain after 5am. Mostly cloudy, with a low around 52. Northwest wind 2 to 6 mph. Chance of precipitation is 20%.
A slight chance of rain before 11am. Partly sunny, with a high near 67. Chance of precipitation is 20%.
Mostly cloudy, with a low around 50.
A chance of rain between 11am and 5pm, then showers and thunderstorms. Mostly cloudy, with a high near 64.
Showers and thunderstorms before 11pm, then rain likely. Mostly cloudy, with a low around 48.
Rain likely before 11am, then showers and thunderstorms likely between 11am and 5pm, then a chance of rain. Mostly cloudy, with a high near 61.
A chance of rain. Mostly cloudy, with a low around 48.
A slight chance of rain before 11am. Mostly sunny, with a high near 66.
Partly cloudy, with a low around 49.
A slight chance of rain after 5pm. Partly sunny, with a high near 69.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jun 3
|
Partly Sunny
|
72°F |
7 mph
SSW
|
|
Wednesday Night
Jun 3
|
Mostly Cloudy then Slight Chance Light Rain
|
52°F |
2 to 6 mph
NW
|
|
Thursday
Jun 4
|
Slight Chance Light Rain then Partly Sunny
|
67°F |
2 to 8 mph
WNW
|
|
Thursday Night
Jun 4
|
Mostly Cloudy
|
50°F |
2 to 8 mph
NW
|
|
Friday
Jun 5
|
Chance Light Rain then Showers And Thunderstorms
|
64°F |
3 to 9 mph
S
|
|
Friday Night
Jun 5
|
Showers And Thunderstorms then Light Rain Likely
|
48°F |
9 mph
SSE
|
|
Saturday
Jun 6
|
Showers And Thunderstorms Likely
|
61°F |
5 to 9 mph
SSW
|
|
Saturday Night
Jun 6
|
Chance Light Rain
|
48°F |
6 mph
SW
|
|
Sunday
Jun 7
|
Slight Chance Light Rain then Mostly Sunny
|
66°F |
3 to 8 mph
SSW
|
|
Sunday Night
Jun 7
|
Partly Cloudy
|
49°F |
2 to 8 mph
NNW
|
|
Monday
Jun 8
|
Partly Sunny then Slight Chance Light Rain
|
69°F |
2 to 8 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around John Sam Lake.