Zone Weather Forecast - Willamette Valley

Cowlitz County Lowlands-
Including the cities of Kelso, Longview, Castle Rock, Kalama, and Woodland
Sep 9 2026 501 PM PDT
Tonight:
Partly cloudy this evening, then becoming mostly cloudy. Lows in the mid 50s. Winds light.
Thursday:
Patchy fog in the morning. Mostly cloudy. Highs in the mid 70s. West wind 5 to 10 mph.
Thursday Night:
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. West wind 5 to 10 mph in the evening, becoming light and variable.
Friday:
Mostly cloudy. Highs around 70. Light and variable winds, becoming light in the afternoon.
Friday Night:
Mostly cloudy. A slight chance of rain after midnight. Lows in the lower 50s. Winds light in the evening, becoming light and variable. Chance of rain 20 percent.
Saturday:
Showers likely with a slight chance of thunderstorms. Highs in the upper 60s. Chance of rain 70 percent.
Saturday Night:
Mostly cloudy with a 50 percent chance of rain. Lows in the lower 50s.
Sunday:
Mostly cloudy with a 20 percent chance of rain. Highs around 70.
Sunday Night:
Partly cloudy in the evening, then clearing. Lows around 50.
Monday:
Mostly sunny. Highs in the lower 70s.
Monday Night:
Mostly clear. Lows in the lower 50s.
Tuesday:
Partly sunny. Highs in the mid 70s.
Tuesday Night:
Partly cloudy in the evening, then clearing. Lows in the lower 50s.
Wednesday:
Mostly sunny. Highs in the upper 70s.

Kelso/Longview 58 73 51 70 Kalama 58 74 53 71 Castle Rock 55 75 50 71

Lower Columbia River-
Including the cities of Scappoose, St. Helens, Rainier, and Clatskanie
Sep 9 2026 501 PM PDT
Tonight:
Partly cloudy this evening, then becoming mostly cloudy. Lows in the upper 50s. Winds light.
Thursday:
Mostly cloudy. Highs in the mid 70s. Northwest wind 5 to 10 mph.
Thursday Night:
Mostly cloudy. Lows in the lower 50s. Northwest wind 5 to 10 mph.
Friday:
Mostly cloudy. Highs in the lower 70s. Light and variable winds, becoming light in the afternoon.
Friday Night:
Mostly cloudy. A slight chance of rain after midnight. Lows in the lower 50s. Winds light in the evening, becoming light and variable. Chance of rain 20 percent.
Saturday:
Showers likely with a slight chance of thunderstorms. Highs in the mid 60s. Chance of rain 70 percent.
Saturday Night:
Mostly cloudy with a 50 percent chance of rain. Lows in the lower 50s.
Sunday:
Mostly cloudy with a 20 percent chance of rain. Highs in the upper 60s.
Sunday Night:
Partly cloudy in the evening, then clearing. Lows in the lower 50s.
Monday:
Mostly sunny. Highs in the lower 70s.
Monday Night:
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s.
Tuesday:
Partly sunny. Highs in the mid 70s.
Tuesday Night:
Partly cloudy in the evening, then clearing. Lows in the mid 50s.
Wednesday:
Mostly sunny with a 20 percent chance of rain. Highs in the upper 70s.

Scappoose 58 75 50 70 St Helens 58 73 53 69 Clatskanie 58 69 54 67

North Clark County Lowlands-
Including the cities of Ridgefield, Battle Ground, Hockinson, Brush Prairie, and La Center
Sep 9 2026 501 PM PDT
Tonight:
Mostly clear this evening, then becoming partly cloudy. Lows in the mid 50s. Winds light.
Thursday:
Partly sunny in the morning, then becoming mostly cloudy. Highs in the mid 70s. Northwest wind 5 to 10 mph.
Thursday Night:
Mostly cloudy in the evening, then becoming partly cloudy. Lows around 50. Northwest wind 5 to 10 mph.
Friday:
Mostly cloudy in the morning, then becoming partly sunny. Highs around 70. Light and variable winds, becoming light in the afternoon.
Friday Night:
Mostly cloudy. Lows in the lower 50s. Winds light in the evening, becoming light and variable.
Saturday:
Showers likely with a slight chance of thunderstorms. Highs in the mid 60s. Chance of rain 70 percent.
Saturday Night:
Mostly cloudy with rain likely. Lows in the lower 50s. Chance of rain 70 percent.
Sunday:
Mostly cloudy with a 40 percent chance of rain. Highs in the upper 60s.
Sunday Night:
Partly cloudy in the evening, then clearing. Lows around 50.
Monday:
Mostly sunny. Highs in the lower 70s.
Monday Night:
Mostly clear. Lows in the lower 50s.
Tuesday:
Partly sunny. Highs in the mid 70s.
Tuesday Night:
Partly cloudy in the evening, then clearing. Lows in the lower 50s.
Wednesday:
Mostly sunny. Highs in the upper 70s.

Ridgefield 57 73 51 69 Battle Ground 56 73 49 68 Brush Prairie 56 74 49 69

Inner Vancouver Metro-
Including the cities of Vancouver, Salmon Creek, and Evergreen 501 PM PDT Wed Sep 9 2026

Tonight:
Mostly clear this evening, then becoming partly cloudy. Lows in the upper 50s. Winds light.
Thursday:
Partly sunny in the morning, then becoming mostly cloudy. Highs in the mid 70s. Northwest wind 5 to 10 mph.
Thursday Night:
Mostly cloudy. Lows in the lower 50s. Northwest wind 5 to 10 mph.
Friday:
Mostly cloudy in the morning, then becoming partly sunny. Highs around 70. Light and variable winds, becoming light in the afternoon.
Friday Night:
Mostly cloudy. Lows in the mid 50s. Winds light in the evening, becoming light and variable.
Saturday:
Showers likely with a slight chance of thunderstorms. Highs in the mid 60s. Chance of rain 70 percent.
Saturday Night:
Mostly cloudy with rain likely. Lows in the lower 50s. Chance of rain 70 percent.
Sunday:
Mostly cloudy with a 20 percent chance of rain. Highs in the upper 60s.
Sunday Night:
Partly cloudy in the evening, then clearing. Lows in the lower 50s.
Monday:
Mostly sunny. Highs in the lower 70s.
Monday Night:
Mostly clear. Lows in the mid 50s.
Tuesday:
Mostly sunny. Highs in the lower 70s.
Tuesday Night:
Partly cloudy in the evening, then clearing. Lows in the mid 50s.
Wednesday:
Mostly sunny. Highs in the upper 70s.

Vancouver 59 75 53 69 Salmon Creek 58 74 51 69

Inner Portland Metro-
Including the cities of Portland, Sellwood, Happy Valley, Lake Oswego, Oregon City, and Eagle Creek
Sep 9 2026 501 PM PDT
Tonight:
Mostly clear this evening, then becoming partly cloudy. Lows in the upper 50s. Winds light this evening, becoming light and variable.
Thursday:
Partly sunny. Highs in the upper 70s. North wind 5 to 10 mph.
Thursday Night:
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 50s. Northwest wind 5 to 10 mph in the evening, becoming light and variable.
Friday:
Mostly cloudy in the morning, then becoming partly sunny. Highs around 70. Light and variable winds, becoming light in the afternoon.
Friday Night:
Mostly cloudy. Lows in the mid 50s. Winds light in the evening, becoming light and variable.
Saturday:
Showers likely with a slight chance of thunderstorms. Highs in the mid 60s. Chance of rain 70 percent.
Saturday Night:
Mostly cloudy with rain likely. Lows in the lower 50s. Chance of rain 70 percent.
Sunday:
Mostly cloudy in the morning, then becoming partly sunny. A 20 percent chance of rain. Highs in the upper 60s.
Sunday Night:
Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 50s.
Monday:
Mostly sunny. Highs in the lower 70s.
Monday Night:
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s.
Tuesday:
Mostly sunny. Highs in the mid 70s.
Tuesday Night:
Partly cloudy. Lows in the mid 50s.
Wednesday:
Mostly sunny. Highs in the upper 70s.

Portland 59 76 53 69 Parkrose 59 77 53 70 Lake Oswego 58 77 51 69 Happy Valley 56 74 50 66

Portland West Hills and Chehalem Mountain-
Including the cities of Sylvan Hill, Skyline Drive, and Chehalem Mountain
Sep 9 2026 501 PM PDT
Tonight:
Mostly clear this evening, then becoming partly cloudy. Lows in the upper 50s. Winds light.
Thursday:
Partly sunny in the morning, then becoming mostly cloudy. Highs in the mid 70s. Winds light.
Thursday Night:
Mostly cloudy in the evening, then becoming partly cloudy. Lows around 50. Northwest wind 5 to 10 mph.
Friday:
Partly sunny. Highs in the upper 60s. Light and variable winds.
Friday Night:
Mostly cloudy. Lows in the lower 50s. Light and variable winds.
Saturday:
Showers likely with a chance of thunderstorms. Highs in the lower 60s. Chance of rain 70 percent.
Saturday Night:
Mostly cloudy with a 50 percent chance of rain. Lows around 50.
Sunday:
Partly sunny. Highs in the mid 60s.
Sunday Night:
Mostly clear. Lows around 50.
Monday:
Mostly sunny. Highs around 70.
Monday Night:
Mostly clear. Lows in the lower 50s.
Tuesday:
Mostly sunny. Highs in the lower 70s.
Tuesday Night:
Partly cloudy in the evening, then clearing. Lows in the lower 50s.
Wednesday:
Sunny. Highs in the mid 70s.

Sylvan 57 73 50 66

East Portland Metro-
Including the cities of Fairview, Gresham, and Troutdale 501 PM PDT Wed Sep 9 2026

Tonight:
Mostly clear this evening, then becoming partly cloudy. Lows in the upper 50s. Winds light this evening, becoming light and variable.
Thursday:
Partly sunny. Highs in the mid 70s. Northwest wind 5 to 10 mph.
Thursday Night:
Mostly cloudy. Lows in the lower 50s. Northwest wind 5 to 10 mph, becoming light after midnight.
Friday:
Cloudy in the morning, then becoming partly sunny. Highs in the upper 60s. Winds light.
Friday Night:
Mostly cloudy. Lows in the lower 50s. Winds light.
Saturday:
Showers likely with a slight chance of thunderstorms. Highs in the mid 60s. Chance of rain 70 percent.
Saturday Night:
Mostly cloudy with a 40 percent chance of rain. Lows in the lower 50s.
Sunday:
Mostly cloudy with a 40 percent chance of rain. Highs in the mid 60s.
Sunday Night:
Partly cloudy. Lows in the lower 50s.
Monday:
Mostly sunny. Highs in the lower 70s.
Monday Night:
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s.
Tuesday:
Mostly sunny. Highs in the lower 70s.
Tuesday Night:
Partly cloudy. Lows in the mid 50s.
Wednesday:
Mostly sunny. Highs in the upper 70s.

Troutdale 58 76 51 69 Gresham 57 75 51 68

Outer Southeast Portland Metro-
Including the cities of Boring, Sandy, and Estacada 501 PM PDT Wed Sep 9 2026

Tonight:
Mostly clear this evening, then becoming partly cloudy. Lows in the mid 50s. Winds light.
Thursday:
Partly sunny. Highs in the mid 70s. Winds light.
Thursday Night:
Mostly cloudy. Lows around 50. Winds light.
Friday:
Mostly cloudy in the morning, then becoming partly sunny. Highs in the upper 60s. Winds light.
Friday Night:
Mostly cloudy. Lows in the lower 50s. Winds light.
Saturday:
Showers likely with a slight chance of thunderstorms. Highs in the lower 60s. Chance of rain 70 percent.
Saturday Night:
Mostly cloudy with a 50 percent chance of rain. Lows around 50.
Sunday:
Mostly cloudy in the morning, then becoming partly sunny. A 20 percent chance of rain. Highs in the lower 60s.
Sunday Night:
Partly cloudy. Lows in the upper 40s.
Monday:
Sunny. Highs around 70.
Monday Night:
Mostly clear in the evening, then becoming partly cloudy. Lows around 50.
Tuesday:
Mostly sunny. Highs in the lower 70s.
Tuesday Night:
Partly cloudy. Lows in the lower 50s.
Wednesday:
Mostly sunny. Highs in the mid 70s.

Damascus 56 74 50 66 Sandy 56 71 49 63 Estacada 57 74 49 66

Tualatin Valley-
Including the cities of Sherwood, Hillsboro, Forest Grove, Rockcreek, and Tigard
Sep 9 2026 501 PM PDT
Tonight:
Mostly clear this evening, then becoming partly cloudy. Lows in the upper 50s. Winds light.
Thursday:
Partly sunny in the morning, then becoming mostly cloudy. Highs in the upper 70s. Northwest wind 5 to 10 mph.
Thursday Night:
Mostly cloudy in the evening, then becoming partly cloudy. Lows around 50. Northwest wind 5 to 10 mph in the evening, becoming light and variable.
Friday:
Mostly cloudy in the morning, then becoming partly sunny. Highs around 70. Light and variable winds.
Friday Night:
Mostly cloudy. Lows in the lower 50s. Light and variable winds.
Saturday:
Showers likely with a slight chance of thunderstorms. Highs in the mid 60s. Chance of rain 70 percent.
Saturday Night:
Mostly cloudy with a 50 percent chance of rain. Lows around 50.
Sunday:
Partly sunny. Highs in the upper 60s.
Sunday Night:
Mostly clear. Lows around 50.
Monday:
Mostly sunny. Highs in the lower 70s.
Monday Night:
Mostly clear. Lows in the lower 50s.
Tuesday:
Mostly sunny. Highs in the mid 70s.
Tuesday Night:
Partly cloudy in the evening, then clearing. Lows in the lower 50s.
Wednesday:
Sunny. Highs in the upper 70s.

Beaverton 58 78 52 70 Hillsboro 56 76 48 70 Forest Grove 57 77 49 70 Tualatin 58 79 51 70