Zone Weather Forecast - Willamette Valley

Cowlitz County Lowlands-
Including the cities of Kelso, Longview, Castle Rock, Kalama, and Woodland
Sep 13 2025 245 PM PDT
Tonight:
Mostly cloudy. Showers with a slight chance of thunderstorms after midnight. Lows in the upper 50s. Winds light. Chance of rain 90 percent. Rainfall amounts around a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday:
Mostly cloudy with showers in the morning, then mostly sunny with a chance of showers in the afternoon. Highs in the upper 60s. West wind 5 to 10 mph. Chance of rain 80 percent. Rainfall amounts less than a tenth of an inch.
Sunday Night:
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. West wind 5 to 10 mph.
Monday:
Mostly sunny. Highs in the mid 70s. Winds light.
Monday Night:
Clear. Lows in the lower 50s. Winds light.
Tuesday:
Sunny. Highs in the upper 80s.
Tuesday Night:
Clear. Lows in the mid 50s.
Wednesday:
Mostly sunny with a 30 percent chance of showers. Highs in the mid 70s.
Wednesday Night:
Partly cloudy with a 20 percent chance of showers. Lows around 50.
Thursday:
Mostly sunny. Highs in the lower 70s.
Thursday Night:
Mostly clear. Lows in the upper 40s.
Friday:
Mostly sunny. Highs in the mid 70s.
Friday Night:
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s.
Saturday:
Mostly sunny. Highs in the mid 70s.

Kelso/Longview 59 68 50 75 Kalama 59 70 50 76 Castle Rock 58 69 47 74

Lower Columbia River-
Including the cities of Scappoose, St. Helens, Rainier, and Clatskanie
Sep 13 2025 245 PM PDT
Tonight:
Mostly cloudy. Showers with a slight chance of thunderstorms after midnight. Lows in the upper 50s. Winds light. Chance of rain 90 percent. Rainfall amounts a tenth to a quarter of an inch, except higher amounts possible in thunderstorms.
Sunday:
Mostly cloudy in the morning, then becoming mostly sunny. A 50 percent chance of showers. Highs around 70. Southwest wind 5 to 10 mph, becoming west in the afternoon. Rainfall amounts around a tenth of an inch.
Sunday Night:
Mostly clear in the evening, then becoming partly cloudy. Lows around 50. Northwest wind 5 to 10 mph.
Monday:
Sunny. Highs in the mid 70s. Winds light.
Monday Night:
Clear. Lows in the mid 50s. North wind 5 to 10 mph.
Tuesday:
Sunny. Highs in the upper 80s.
Tuesday Night:
Clear. Lows in the mid 50s.
Wednesday:
Mostly sunny with a 20 percent chance of showers. Highs in the mid 70s.
Wednesday Night:
Partly cloudy with a 20 percent chance of showers. Lows in the lower 50s.
Thursday:
Mostly sunny. Highs in the lower 70s.
Thursday Night:
Mostly clear. Lows around 50.
Friday:
Mostly sunny. Highs in the mid 70s.
Friday Night:
Mostly clear. Lows in the lower 50s.
Saturday:
Mostly sunny. Highs in the upper 70s.

Scappoose 58 71 48 76 St Helens 59 68 49 73 Clatskanie 58 65 51 71

North Clark County Lowlands-
Including the cities of Ridgefield, Battle Ground, Hockinson, Brush Prairie, and La Center
Sep 13 2025 245 PM PDT
Tonight:
Mostly cloudy. Showers after midnight. Lows in the upper 50s. Winds light. Chance of rain 90 percent. Rainfall amounts around a tenth of an inch.
Sunday:
Cloudy with showers likely in the morning, then mostly sunny with a chance of showers in the afternoon. Highs in the upper 60s. South wind 5 to 10 mph, becoming west in the afternoon. Chance of rain 70 percent. Rainfall amounts a tenth to a quarter of an inch.
Sunday Night:
Mostly clear. A slight chance of showers in the evening. Lows in the upper 40s. Northwest wind 5 to 10 mph. Chance of rain 20 percent.
Monday:
Sunny. Highs in the mid 70s. Winds light.
Monday Night:
Clear. Lows in the mid 50s. North wind 5 to 10 mph.
Tuesday:
Sunny. Highs in the upper 80s.
Tuesday Night:
Clear. Lows in the mid 50s.
Wednesday:
Mostly sunny with a 20 percent chance of showers. Highs in the mid 70s.
Wednesday Night:
Partly cloudy with a 20 percent chance of showers. Lows around 50.
Thursday:
Mostly sunny. Highs in the lower 70s.
Thursday Night:
Mostly clear. Lows in the upper 40s.
Friday:
Sunny. Highs in the upper 70s.
Friday Night:
Mostly clear. Lows in the lower 50s.
Saturday:
Mostly sunny with a 20 percent chance of showers. Highs in the upper 70s.

Ridgefield 58 68 48 74 Battle Ground 56 68 45 75 Brush Prairie 57 68 45 75

Inner Vancouver Metro-
Including the cities of Vancouver, Salmon Creek, and Evergreen 245 PM PDT Sat Sep 13 2025

Tonight:
Mostly cloudy. Showers after midnight. Lows around 60. Winds light. Chance of rain 90 percent. Rainfall amounts around a tenth of an inch.
Sunday:
Mostly cloudy in the morning, then becoming mostly sunny. A 50 percent chance of showers. Highs around 70. Winds light, becoming west 5 to 10 mph in the afternoon. Rainfall amounts around a tenth of an inch.
Sunday Night:
Mostly clear. Lows in the upper 40s. Northwest wind 5 to 10 mph.
Monday:
Sunny. Highs in the mid 70s. Winds light.
Monday Night:
Clear. Lows in the mid 50s. North wind 5 to 10 mph.
Tuesday:
Sunny. Highs in the upper 80s.
Tuesday Night:
Clear. Lows in the mid 50s.
Wednesday:
Mostly sunny with a 20 percent chance of showers. Highs in the mid 70s.
Wednesday Night:
Partly cloudy with a 20 percent chance of showers. Lows in the lower 50s.
Thursday:
Mostly sunny. Highs in the lower 70s.
Thursday Night:
Mostly clear. Lows around 50.
Friday:
Sunny. Highs in the upper 70s.
Friday Night:
Mostly clear. Lows in the lower 50s.
Saturday:
Mostly sunny. Highs in the upper 70s.

Vancouver 61 68 50 74 Salmon Creek 59 69 48 75

Inner Portland Metro-
Including the cities of Portland, Sellwood, Happy Valley, Lake Oswego, Oregon City, and Eagle Creek
Sep 13 2025 245 PM PDT
Tonight:
Mostly cloudy. Showers after midnight. Lows around 60. Winds light. Chance of rain 80 percent. Rainfall amounts a tenth to a quarter of an inch.
Sunday:
Cloudy in the morning, then becoming partly sunny. A 50 percent chance of showers. Highs in the lower 70s. Southwest wind 5 to 10 mph, becoming west in the afternoon. Rainfall amounts around a tenth of an inch.
Sunday Night:
Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 40s. Northwest wind 5 to 10 mph.
Monday:
Sunny. Highs in the mid 70s. Winds light.
Monday Night:
Clear. Lows in the mid 50s. Winds light.
Tuesday:
Sunny. Highs in the upper 80s.
Tuesday Night:
Clear. Lows in the mid 50s.
Wednesday:
Mostly sunny with a 20 percent chance of showers. Highs in the upper 70s.
Wednesday Night:
Partly cloudy with a 20 percent chance of showers. Lows in the lower 50s.
Thursday:
Mostly sunny. Highs in the mid 70s.
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 upper 70s.

Portland 61 70 50 75 Parkrose 61 71 50 77 Lake Oswego 60 71 49 76 Happy Valley 58 68 48 74

Portland West Hills and Chehalem Mountain-
Including the cities of Sylvan Hill, Skyline Drive, and Chehalem Mountain
Sep 13 2025 245 PM PDT
Tonight:
Mostly cloudy. Showers with a slight chance of thunderstorms after midnight. Lows in the upper 50s. Winds light, becoming south 5 to 10 mph after midnight. Chance of rain 80 percent. Rainfall amounts a tenth to a quarter of an inch, except higher amounts possible in thunderstorms.
Sunday:
Mostly cloudy with showers likely in the morning, then mostly sunny with a chance of showers in the afternoon. Highs in the upper 60s. Southwest wind 5 to 10 mph, becoming west in the afternoon. Chance of rain 70 percent. Rainfall amounts around a tenth of an inch.
Sunday Night:
Mostly clear. Lows in the upper 40s. Winds light.
Monday:
Sunny. Highs in the mid 70s. Winds light.
Monday Night:
Clear. Lows in the mid 50s. North wind 5 to 10 mph.
Tuesday:
Sunny. Highs in the mid 80s.
Tuesday Night:
Clear. Lows in the mid 50s.
Wednesday:
Mostly sunny with a 20 percent chance of showers. Highs in the mid 70s.
Wednesday Night:
Partly cloudy with a 20 percent chance of showers. Lows in the lower 50s.
Thursday:
Mostly sunny. Highs in the lower 70s.
Thursday Night:
Mostly clear. Lows around 50.
Friday:
Sunny. Highs in the mid 70s.
Friday Night:
Mostly clear. Lows in the lower 50s.
Saturday:
Mostly sunny. Highs in the mid 70s.

Sylvan 58 67 49 72

East Portland Metro-
Including the cities of Fairview, Gresham, and Troutdale 245 PM PDT Sat Sep 13 2025

Tonight:
Mostly cloudy. Showers after midnight. Lows in the upper 50s. Winds light. Chance of rain 80 percent. Rainfall amounts around a tenth of an inch.
Sunday:
Cloudy with showers in the morning, then partly sunny with a chance of showers in the afternoon. Highs around 70. West wind 5 to 10 mph. Chance of rain 80 percent. Rainfall amounts a tenth to a quarter of an inch.
Sunday Night:
Partly cloudy with a slight chance of showers in the evening, then mostly clear after midnight. Lows in the upper 40s. West wind 5 to 10 mph. Chance of rain 20 percent.
Monday:
Sunny. Highs in the mid 70s. Winds light.
Monday Night:
Clear. Lows in the mid 50s. Northeast wind 5 to 10 mph.
Tuesday:
Sunny. Highs in the upper 80s.
Tuesday Night:
Clear. Lows in the mid 50s.
Wednesday:
Mostly sunny with a 20 percent chance of showers. Highs in the mid 70s.
Wednesday Night:
Partly cloudy with a 20 percent chance of showers. Lows in the lower 50s.
Thursday:
Mostly sunny. Highs in the lower 70s.
Thursday Night:
Mostly clear. Lows around 50.
Friday:
Mostly sunny. Highs in the mid 70s.
Friday Night:
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s.
Saturday:
Mostly sunny with a 20 percent chance of showers. Highs in the upper 70s.

Troutdale 59 70 48 77 Gresham 59 69 49 75

Outer Southeast Portland Metro-
Including the cities of Boring, Sandy, and Estacada 245 PM PDT Sat Sep 13 2025

Tonight:
Mostly cloudy. Rain likely after midnight. Lows in the upper 50s. Winds light. Chance of rain 70 percent. Rainfall amounts around a tenth of an inch.
Sunday:
Showers. Highs in the upper 60s. Southwest wind 5 to 10 mph. Chance of rain 90 percent. Rainfall amounts around a tenth of an inch.
Sunday Night:
Partly cloudy with a slight chance of showers in the evening, then mostly clear after midnight. Lows in the mid 40s. Winds light. Chance of rain 20 percent.
Monday:
Sunny. Highs in the mid 70s. Winds light.
Monday Night:
Mostly clear. Lows in the mid 50s. Northeast wind 5 to 10 mph.
Tuesday:
Sunny. Highs in the upper 80s.
Tuesday Night:
Clear. Lows in the mid 50s.
Wednesday:
Mostly sunny with a 20 percent chance of showers. Highs in the mid 70s.
Wednesday Night:
Partly cloudy with a 20 percent chance of showers. Lows around 50.
Thursday:
Mostly sunny. Highs in the lower 70s.
Thursday Night:
Mostly clear. Lows in the upper 40s.
Friday:
Mostly sunny. Highs in the mid 70s.
Friday Night:
Mostly clear in the evening, then becoming partly cloudy. A 20 percent chance of showers. Lows in the lower 50s.
Saturday:
Mostly sunny with a 20 percent chance of showers. Highs in the upper 70s.

Damascus 58 68 47 74 Sandy 56 64 45 72 Estacada 56 67 45 75

Tualatin Valley-
Including the cities of Sherwood, Hillsboro, Forest Grove, Rockcreek, and Tigard
Sep 13 2025 245 PM PDT
Tonight:
Mostly cloudy. Showers with a slight chance of thunderstorms after midnight. Lows in the upper 50s. Winds light. Chance of rain 80 percent. Rainfall amounts around a quarter of an inch, except higher amounts possible in thunderstorms.
Sunday:
Mostly cloudy with showers likely in the morning, then mostly sunny with a chance of showers in the afternoon. Highs in the lower 70s. Winds light, becoming west 5 to 10 mph in the afternoon. Chance of rain 70 percent. Rainfall amounts around a tenth of an inch.
Sunday Night:
Mostly clear. Lows in the upper 40s. Northwest wind 5 to 10 mph.
Monday:
Sunny. Highs in the upper 70s. Winds light.
Monday Night:
Clear. Lows in the mid 50s. Winds light.
Tuesday:
Sunny. Highs in the upper 80s.
Tuesday Night:
Clear. Lows in the mid 50s.
Wednesday:
Mostly sunny with a 20 percent chance of showers. Highs in the upper 70s.
Wednesday Night:
Partly cloudy with a 20 percent chance of showers. Lows in the lower 50s.
Thursday:
Mostly sunny. Highs in the mid 70s.
Thursday Night:
Mostly clear. Lows around 50.
Friday:
Sunny. Highs in the upper 70s.
Friday Night:
Mostly clear. Lows in the lower 50s.
Saturday:
Mostly sunny. Highs in the upper 70s.

Beaverton 60 72 50 77 Hillsboro 58 71 47 77 Forest Grove 58 71 47 76 Tualatin 61 73 50 78