Zone Weather Forecast - Willamette Valley

Cowlitz County Lowlands-
Including the cities of Kelso, Longview, Castle Rock, Kalama, and Woodland
May 19 2026 923 AM PDT
Rest of Today:
Partly sunny. Highs in the upper 60s. West wind 5 to 10 mph.
Tonight:
Mostly cloudy. Patchy fog after midnight. Lows in the upper 40s. Northwest wind 5 to 10 mph.
Wednesday:
Mostly sunny. Highs in the lower 70s. North wind 5 to 10 mph.
Wednesday Night:
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s. Northwest wind 5 to 10 mph.
Thursday:
Sunny. Highs around 80. Winds light.
Thursday Night:
Mostly clear. Lows around 50.
Friday:
Sunny. Highs in the upper 70s.
Friday Night:
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s.
Saturday:
Mostly sunny. Highs in the mid 70s.
Saturday Night:
Partly cloudy. Lows in the upper 40s.
Sunday:
Partly sunny. Highs in the lower 70s.
Sunday Night:
Mostly cloudy with a 50 percent chance of rain. Lows in the upper 40s. .MEMORIAL DAY...Mostly cloudy in the morning, then becoming partly sunny. A 50 percent chance of rain. Highs in the mid 60s.

Kelso/Longview 66 49 71 Kalama 68 50 73 Castle Rock 66 47 71

Lower Columbia River-
Including the cities of Scappoose, St. Helens, Rainier, and Clatskanie
May 19 2026 923 AM PDT
Rest of Today:
Partly sunny. Highs in the upper 60s. Northwest wind 5 to 10 mph.
Tonight:
Mostly cloudy. Lows in the upper 40s. Northwest wind 5 to 10 mph.
Wednesday:
Mostly sunny. Highs in the lower 70s. Northwest wind 5 to 10 mph.
Wednesday Night:
Partly cloudy. Lows in the upper 40s. Northwest wind 5 to 10 mph.
Thursday:
Sunny. Highs around 80. Winds light.
Thursday Night:
Mostly clear. Lows in the lower 50s.
Friday:
Sunny. Highs in the upper 70s.
Friday Night:
Mostly clear in the evening, then becoming partly cloudy. Lows around 50.
Saturday:
Mostly sunny. Highs in the upper 70s.
Saturday Night:
Partly cloudy. Lows in the upper 40s.
Sunday:
Partly sunny. Highs in the mid 70s.
Sunday Night:
Mostly cloudy with a 20 percent chance of rain. Lows in the upper 40s. .MEMORIAL DAY...Mostly cloudy in the morning, then becoming partly sunny. A 50 percent chance of rain. Highs in the mid 60s.

Scappoose 67 47 71 St Helens 66 49 70 Clatskanie 62 49 66

North Clark County Lowlands-
Including the cities of Ridgefield, Battle Ground, Hockinson, Brush Prairie, and La Center
May 19 2026 923 AM PDT
Rest of Today:
Partly sunny. Highs in the upper 60s. Northwest wind 5 to 10 mph.
Tonight:
Mostly cloudy. Lows in the upper 40s. Northwest wind 5 to 10 mph.
Wednesday:
Mostly sunny. Highs in the lower 70s. Northwest wind 5 to 10 mph.
Wednesday Night:
Partly cloudy. Lows in the upper 40s. Northwest wind 5 to 10 mph.
Thursday:
Sunny. Highs in the lower 80s. North wind 5 to 10 mph.
Thursday Night:
Mostly clear. Lows in the lower 50s.
Friday:
Sunny. Highs in the upper 70s.
Friday Night:
Mostly clear. Lows around 50.
Saturday:
Mostly sunny. Highs in the upper 70s.
Saturday Night:
Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 40s.
Sunday:
Mostly sunny. Highs in the mid 70s.
Sunday Night:
Mostly cloudy with a 20 percent chance of rain. Lows in the upper 40s. .MEMORIAL DAY...Mostly cloudy in the morning, then becoming partly sunny. A 50 percent chance of rain. Highs in the mid 60s.

Ridgefield 67 48 70 Battle Ground 66 46 70 Brush Prairie 67 47 70

Inner Vancouver Metro-
Including the cities of Vancouver, Salmon Creek, and Evergreen 923 AM PDT Tue May 19 2026

Rest of Today:
Partly sunny. Highs in the upper 60s. Northwest wind 5 to 10 mph.
Tonight:
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s. Northwest wind 5 to 10 mph.
Wednesday:
Mostly sunny. Highs in the lower 70s. Northwest wind 5 to 10 mph.
Wednesday Night:
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s. Northwest wind 5 to 10 mph.
Thursday:
Sunny. Highs in the lower 80s. North wind 5 to 10 mph.
Thursday Night:
Mostly clear. Lows in the lower 50s.
Friday:
Sunny. Highs in the lower 80s.
Friday Night:
Mostly clear. Lows in the lower 50s.
Saturday:
Mostly sunny. Highs in the upper 70s.
Saturday Night:
Partly cloudy. Lows around 50.
Sunday:
Mostly sunny. Highs in the upper 70s.
Sunday Night:
Mostly cloudy with a 20 percent chance of rain. Lows around 50. .MEMORIAL DAY...Mostly cloudy in the morning, then becoming partly sunny. A 50 percent chance of rain. Highs in the upper 60s.

Vancouver 69 50 72 Salmon Creek 68 48 71

Inner Portland Metro-
Including the cities of Portland, Sellwood, Happy Valley, Lake Oswego, Oregon City, and Eagle Creek
May 19 2026 923 AM PDT
Rest of Today:
Partly sunny. Highs around 70. Northwest wind 5 to 10 mph.
Tonight:
Mostly cloudy. Lows around 50. Northwest wind 5 to 10 mph.
Wednesday:
Mostly sunny. Highs in the lower 70s. North wind 5 to 10 mph.
Wednesday Night:
Mostly cloudy in the evening, then becoming partly cloudy. Lows around 50. North wind 5 to 10 mph.
Thursday:
Sunny. Highs in the lower 80s. North wind 5 to 10 mph.
Thursday Night:
Mostly clear. Lows in the mid 50s.
Friday:
Sunny. Highs in the lower 80s.
Friday Night:
Mostly clear. Lows in the lower 50s.
Saturday:
Mostly sunny. Highs around 80.
Saturday Night:
Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 50s.
Sunday:
Mostly sunny. Highs in the upper 70s.
Sunday Night:
Mostly cloudy. Lows around 50. .MEMORIAL DAY...Mostly cloudy in the morning, then becoming partly sunny. A 50 percent chance of rain. Highs in the upper 60s.

Portland 70 50 73 Parkrose 70 50 73 Lake Oswego 70 50 73 Happy Valley 67 50 70

Portland West Hills and Chehalem Mountain-
Including the cities of Sylvan Hill, Skyline Drive, and Chehalem Mountain
May 19 2026 923 AM PDT
Rest of Today:
Partly sunny. Highs in the upper 60s. Winds light.
Tonight:
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s. Northwest wind 5 to 10 mph.
Wednesday:
Mostly sunny. Highs in the lower 70s. North wind 5 to 10 mph.
Wednesday Night:
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s. North wind 5 to 10 mph.
Thursday:
Sunny. Highs around 80. North wind 5 to 10 mph.
Thursday Night:
Mostly clear. Lows in the lower 50s.
Friday:
Sunny. Highs around 80.
Friday Night:
Mostly clear. Lows in the lower 50s.
Saturday:
Mostly sunny. Highs in the upper 70s.
Saturday Night:
Partly cloudy. Lows in the upper 40s.
Sunday:
Mostly sunny. Highs in the mid 70s.
Sunday Night:
Mostly cloudy. Lows in the upper 40s. .MEMORIAL DAY...Mostly cloudy in the morning, then becoming partly sunny. A 40 percent chance of rain. Highs in the mid 60s.

Sylvan 66 49 69

East Portland Metro-
Including the cities of Fairview, Gresham, and Troutdale 923 AM PDT Tue May 19 2026

Rest of Today:
Partly sunny. Highs in the upper 60s. Northwest wind 5 to 10 mph.
Tonight:
Mostly cloudy. Lows around 50. Northwest wind 5 to 10 mph.
Wednesday:
Mostly cloudy in the morning, then clearing. Highs in the lower 70s. Northwest wind 5 to 10 mph.
Wednesday Night:
Mostly cloudy in the evening, then becoming partly cloudy. Lows around 50. Northwest wind 5 to 10 mph, becoming light after midnight.
Thursday:
Mostly sunny. Highs in the lower 80s. North wind 5 to 10 mph.
Thursday Night:
Mostly clear. Lows in the lower 50s.
Friday:
Sunny. Highs around 80.
Friday Night:
Mostly clear. Lows in the lower 50s.
Saturday:
Mostly sunny. Highs in the upper 70s.
Saturday Night:
Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 50s.
Sunday:
Mostly sunny. Highs in the mid 70s.
Sunday Night:
Mostly cloudy. Lows in the lower 50s. .MEMORIAL DAY...Mostly cloudy with a 50 percent chance of rain. Highs in the upper 60s.

Troutdale 68 50 72 Gresham 68 50 71

Outer Southeast Portland Metro-
Including the cities of Boring, Sandy, and Estacada 923 AM PDT Tue May 19 2026

Rest of Today:
Mostly sunny. Highs in the upper 60s. Northwest wind 5 to 10 mph.
Tonight:
Mostly cloudy. Lows in the upper 40s. Winds light.
Wednesday:
Mostly cloudy in the morning, then clearing. Highs around 70. Northwest wind 5 to 10 mph.
Wednesday Night:
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s. Northwest wind 5 to 10 mph, becoming light after midnight.
Thursday:
Sunny. Highs around 80. Winds light, becoming north 5 to 10 mph in the afternoon.
Thursday Night:
Mostly clear. Lows in the lower 50s.
Friday:
Sunny. Highs in the upper 70s.
Friday Night:
Mostly clear. Lows in the lower 50s.
Saturday:
Mostly sunny. Highs in the mid 70s.
Saturday Night:
Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 40s.
Sunday:
Mostly sunny. Highs in the mid 70s.
Sunday Night:
Mostly cloudy. Lows in the upper 40s. .MEMORIAL DAY...Mostly cloudy with a 50 percent chance of rain. Highs in the mid 60s.

Damascus 66 50 69 Sandy 63 48 66 Estacada 66 48 68

Tualatin Valley-
Including the cities of Sherwood, Hillsboro, Forest Grove, Rockcreek, and Tigard
May 19 2026 923 AM PDT
Rest of Today:
Partly sunny. Highs in the lower 70s. Light and variable winds, becoming light this afternoon.
Tonight:
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s. Northwest wind 5 to 10 mph.
Wednesday:
Mostly sunny. Highs in the mid 70s. Winds light.
Wednesday Night:
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s. Northwest wind 5 to 10 mph.
Thursday:
Sunny. Highs in the mid 80s. Winds light.
Thursday Night:
Mostly clear. Lows in the lower 50s.
Friday:
Sunny. Highs in the lower 80s.
Friday Night:
Mostly clear. Lows around 50.
Saturday:
Mostly sunny. Highs in the lower 80s.
Saturday Night:
Partly cloudy. Lows in the upper 40s.
Sunday:
Mostly sunny. Highs in the upper 70s.
Sunday Night:
Mostly cloudy with a 20 percent chance of rain. Lows in the upper 40s. .MEMORIAL DAY...Mostly cloudy in the morning, then becoming partly sunny. A 40 percent chance of rain. Highs in the upper 60s.

Beaverton 71 49 75 Hillsboro 68 46 72 Forest Grove 68 47 72 Tualatin 72 50 75