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St. John, WA Weather Forecast

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St. John, WA Weather Forecast

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St. John WA weather - Clear - 61°F
Clear
61°F
Updated 1:09 pm
Feels Like 61°F
Humidity 40%
Wind SSW 3 mph
Barometer  30.12 in
Dew Point 37°F
St. John WA weather - Clear - 16°C
Clear
16°C
Updated 1:09 pm
Feels Like 16°C
Humidity 40%
Wind SSW 5 km/h
Barometer  101.9 kPa
Dew Point 3°C
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St. John Weather Forecast

REST OF TODAY TONIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY MONDAY
St. John, WA Weather - Rest Of Today Sunny St. John, WA Weather - Tonight Mostly Clear St. John, WA Weather - Wednesday Mostly Sunny St. John, WA Weather - Wednesday Night Partly Cloudy St. John, WA Weather - Thursday Chance Of Showers St. John, WA Weather - Thursday Night Rain Showers St. John, WA Weather - Friday Partly Sunny St. John, WA Weather - Friday Night Partly Cloudy St. John, WA Weather - Saturday Partly Cloudy St. John, WA Weather - Saturday Night Chance Of Showers St. John, WA Weather - Sunday Chance Of Showers St. John, WA Weather - Monday Mostly Sunny
Sunny Mostly Clear Mostly Sunny Partly Cloudy Chance of Showers Rain Showers Partly Sunny Partly Cloudy Partly Cloudy Chance of Showers Chance of Showers Mostly Sunny
Hi: 70°FHi: 21°C
 Lo: 40°FLo: 4°C Hi: 70°FHi: 21°C
 Lo: 41°FLo: 5°C Hi: 63°FHi: 17°C
 Lo: 36°FLo: 2°C Hi: 56°FHi: 13°C
 Hi: 55°FHi: 13°C
Lo: 30°FLo: -1°C		 Hi: 55°FHi: 13°C
Lo: 30°FLo: -1°C		 Hi: 56°FHi: 13°C
Lo: 35°FLo: 2°C		 Hi: 56°FHi: 13°C
Lo: 35°FLo: 2°C		 Hi: 57°FHi: 14°C
POP: 50% POP: 70% POP: 20% POP: 20%
POP = Probability of Precipitation.
Weather Outlook Updated: 1135 AM PDT Tue Oct 20 2026 St. John, WA Weather - WeatherWorld.com

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St. John Forecast Discussion

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Issued: 1055 AM PDT Tue Oct 20 2026

Key Messages

  • Dry weather continues through Wednesday with mild afternoon temperatures.
  • Cooler weather with increased precipitation chances Thursday night through the weekend.

Discussion

... Today through Wednesday: The Low has finally reached the California coastline and still pushing upper level clouds across the Pacific Northwest. Dry, warm conditions are expected over the Inland Northwest through most of Wednesday. Precip chances across the region remain near 0 percent through Wednesday. Winds w...