Zone Weather Forecast - Willamette Valley

Cowlitz County Lowlands-
Including the cities of Kelso, Longview, Castle Rock, Kalama, and Woodland
Mar 28 2026 502 PM PDT
Tonight:
Partly cloudy. Areas of frost after midnight. Lows in the mid 30s. Winds light.
Sunday:
Rain likely. Highs in the lower 50s. Winds light, becoming west 5 to 10 mph in the afternoon. Chance of rain 70 percent. Rainfall amounts less than a tenth of an inch.
Sunday Night:
Mostly cloudy with a chance of rain in the evening, then mostly clear after midnight. Widespread frost after midnight. Lows around 30. Northwest wind 5 to 10 mph. Chance of rain 50 percent. Rainfall amounts less than a tenth of an inch.
Monday:
Widespread frost in the morning. Sunny. Highs in the mid 50s. Winds light.
Monday Night:
Mostly clear in the evening, then becoming partly cloudy. Widespread frost after midnight. Lows in the lower 30s. Winds light.
Tuesday:
Partly sunny. Widespread frost. Highs in the upper 50s.
Tuesday Night:
Mostly cloudy with a 50 percent chance of rain. Lows in the upper 30s.
Wednesday:
Rain. Highs around 50. Chance of rain near 100 percent.
Wednesday Night:
Rain. Lows in the upper 30s. Chance of rain near 100 percent.
Thursday:
Rain. Highs in the lower 50s. Chance of rain 90 percent.
Thursday Night:
Mostly cloudy in the evening, then becoming partly cloudy. A 50 percent chance of rain. Lows in the mid 30s.
Friday:
Partly sunny with a 20 percent chance of rain. Highs in the upper 50s.
Friday Night:
Partly cloudy in the evening, then clearing. Lows in the upper 30s.
Saturday:
Mostly sunny. Highs in the lower 60s.

Kelso/Longview 37 52 31 56 Kalama 37 52 31 56 Castle Rock 35 51 29 53

Lower Columbia River-
Including the cities of Scappoose, St. Helens, Rainier, and Clatskanie
Mar 28 2026 502 PM PDT
Tonight:
Mostly clear this evening, then becoming partly cloudy. Lows in the upper 30s. Winds light this evening, becoming light and variable.
Sunday:
A chance of rain in the morning, then rain likely in the afternoon. Highs in the lower 50s. Winds light, becoming west 5 to 10 mph in the afternoon. Chance of rain 70 percent. Rainfall amounts less than a tenth of an inch.
Sunday Night:
Mostly cloudy with a chance of rain in the evening, then partly cloudy after midnight. Widespread frost after midnight. Lows in the lower 30s. Northwest wind 5 to 10 mph. Chance of rain 40 percent. Rainfall amounts less than a tenth of an inch.
Monday:
Widespread frost in the morning. Sunny. Highs in the mid 50s. Winds light.
Monday Night:
Mostly clear in the evening, then becoming partly cloudy. Widespread frost after midnight. Lows in the lower 30s. Winds light.
Tuesday:
Partly sunny. Widespread frost. Highs in the upper 50s.
Tuesday Night:
Mostly cloudy with a 50 percent chance of rain. Lows around 40.
Wednesday:
Rain. Highs in the lower 50s. Chance of rain near 100 percent.
Wednesday Night:
Rain. Lows in the upper 30s. Chance of rain near 100 percent.
Thursday:
Rain. Highs in the lower 50s. Chance of rain 90 percent.
Thursday Night:
Mostly cloudy in the evening, then becoming partly cloudy. A 50 percent chance of rain. Lows in the upper 30s.
Friday:
Partly sunny with a 20 percent chance of rain. Highs in the upper 50s.
Friday Night:
Partly cloudy in the evening, then clearing. Lows in the upper 30s.
Saturday:
Mostly sunny. Highs in the mid 60s.

Scappoose 38 52 30 56 St Helens 38 52 32 55 Clatskanie 37 51 32 54

North Clark County Lowlands-
Including the cities of Ridgefield, Battle Ground, Hockinson, Brush Prairie, and La Center
Mar 28 2026 502 PM PDT
Tonight:
Mostly clear this evening, then becoming partly cloudy. Lows in the upper 30s. Winds light.
Sunday:
Mostly cloudy. A chance of rain in the morning, then rain likely in the afternoon. Highs in the lower 50s. Winds light, becoming west 5 to 10 mph in the afternoon. Chance of rain 70 percent. Rainfall amounts less than a tenth of an inch.
Sunday Night:
Mostly cloudy with a chance of rain in the evening, then partly cloudy after midnight. Widespread frost after midnight. Lows around 30. Northwest wind 5 to 10 mph. Chance of rain 50 percent. Rainfall amounts less than a tenth of an inch.
Monday:
Widespread frost in the morning. Sunny. Highs in the mid 50s. Light and variable winds, becoming light in the afternoon.
Monday Night:
Mostly clear in the evening, then becoming partly cloudy. Widespread frost after midnight. Lows in the lower 30s. Winds light.
Tuesday:
Partly sunny. Highs in the upper 50s.
Tuesday Night:
Mostly cloudy with a 50 percent chance of rain. Lows around 40.
Wednesday:
Rain. Highs in the lower 50s. Chance of rain near 100 percent.
Wednesday Night:
Rain. Lows in the upper 30s. Chance of rain near 100 percent.
Thursday:
Rain. Highs in the lower 50s. Chance of rain near 100 percent.
Thursday Night:
Mostly cloudy in the evening, then becoming partly cloudy. A 50 percent chance of rain. Lows in the mid 30s.
Friday:
Partly sunny with a 20 percent chance of rain. Highs in the upper 50s.
Friday Night:
Partly cloudy in the evening, then clearing. Lows in the mid 30s.
Saturday:
Sunny. Highs in the lower 60s.

Ridgefield 37 51 30 54 Battle Ground 36 51 29 55 Brush Prairie 36 51 29 55

Inner Vancouver Metro-
Including the cities of Vancouver, Salmon Creek, and Evergreen 502 PM PDT Sat Mar 28 2026

Tonight:
Partly cloudy. Lows in the upper 30s. Winds light.
Sunday:
Mostly cloudy. A chance of rain in the morning, then rain likely in the afternoon. Highs in the lower 50s. Winds light, becoming west 5 to 10 mph in the afternoon. Chance of rain 70 percent. Rainfall amounts less than a tenth of an inch.
Sunday Night:
Mostly cloudy with a chance of rain in the evening, then partly cloudy after midnight. Widespread frost after midnight. Lows in the lower 30s. Northwest wind 5 to 10 mph. Chance of rain 40 percent. Rainfall amounts less than a tenth of an inch.
Monday:
Widespread frost in the morning. Sunny. Highs in the mid 50s. Light and variable winds, becoming light in the afternoon.
Monday Night:
Mostly clear in the evening, then becoming partly cloudy. Areas of frost after midnight. Lows in the mid 30s. North wind 5 to 10 mph.
Tuesday:
Partly sunny. Highs in the upper 50s.
Tuesday Night:
Mostly cloudy with a 40 percent chance of rain. Lows in the lower 40s.
Wednesday:
Rain. Highs in the lower 50s. Chance of rain near 100 percent.
Wednesday Night:
Rain. Lows in the upper 30s. Chance of rain near 100 percent.
Thursday:
Rain. Highs in the mid 50s. Chance of rain 90 percent.
Thursday Night:
Mostly cloudy in the evening, then becoming partly cloudy. A 40 percent chance of rain. Lows in the upper 30s.
Friday:
Partly sunny with a 20 percent chance of rain. Highs in the upper 50s.
Friday Night:
Partly cloudy in the evening, then clearing. Lows in the upper 30s.
Saturday:
Sunny. Highs in the mid 60s.

Vancouver 40 52 32 55 Salmon Creek 37 52 31 55

Inner Portland Metro-
Including the cities of Portland, Sellwood, Happy Valley, Lake Oswego, Oregon City, and Eagle Creek
Mar 28 2026 502 PM PDT
Tonight:
Partly cloudy. Lows around 40. Winds light.
Sunday:
A chance of rain in the morning, then rain likely in the afternoon. Highs in the mid 50s. Winds light, becoming southwest 5 to 10 mph in the afternoon. Chance of rain 70 percent. Rainfall amounts less than a tenth of an inch.
Sunday Night:
Mostly cloudy with a chance of rain in the evening, then partly cloudy after midnight. Areas of frost after midnight. Lows in the lower 30s. Northwest wind 5 to 10 mph. Chance of rain 50 percent. Rainfall amounts less than a tenth of an inch.
Monday:
Widespread frost in the morning. Sunny. Highs in the mid 50s. North wind 5 to 10 mph.
Monday Night:
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 30s. North wind 5 to 10 mph.
Tuesday:
Mostly sunny. Highs around 60.
Tuesday Night:
Mostly cloudy with a 50 percent chance of rain. Lows in the lower 40s.
Wednesday:
Rain. Highs in the lower 50s. Chance of rain near 100 percent.
Wednesday Night:
Rain. Lows around 40. Chance of rain near 100 percent.
Thursday:
Rain. Highs in the mid 50s. Chance of rain 90 percent.
Thursday Night:
Mostly cloudy in the evening, then becoming partly cloudy. A 50 percent chance of rain. Lows in the upper 30s.
Friday:
Partly sunny with a 20 percent chance of rain. Highs in the upper 50s.
Friday Night:
Partly cloudy in the evening, then clearing. Lows in the upper 30s.
Saturday:
Sunny. Highs in the mid 60s.

Portland 41 54 34 56 Parkrose 40 53 32 56 Lake Oswego 41 54 33 56 Happy Valley 40 51 32 53

Portland West Hills and Chehalem Mountain-
Including the cities of Sylvan Hill, Skyline Drive, and Chehalem Mountain
Mar 28 2026 502 PM PDT
Tonight:
Partly cloudy. Lows in the upper 30s. Winds light.
Sunday:
A chance of rain in the morning, then rain likely in the afternoon. Highs in the lower 50s. Southwest wind 5 to 10 mph. Chance of rain 70 percent. Rainfall amounts less than a tenth of an inch.
Sunday Night:
Mostly cloudy with a chance of rain in the evening, then partly cloudy after midnight. Widespread frost after midnight. Lows in the lower 30s. Northwest wind 5 to 10 mph. Chance of rain 30 percent. Rainfall amounts less than a tenth of an inch.
Monday:
Widespread frost in the morning. Sunny. Highs in the lower 50s. North wind 5 to 10 mph.
Monday Night:
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 30s. North wind 5 to 10 mph.
Tuesday:
Partly sunny. Highs in the upper 50s.
Tuesday Night:
Mostly cloudy with a 40 percent chance of rain. Lows in the lower 40s.
Wednesday:
Rain. Highs around 50. Chance of rain near 100 percent.
Wednesday Night:
Rain. Lows in the upper 30s. Chance of rain near 100 percent.
Thursday:
Rain. Highs in the lower 50s. Chance of rain 90 percent.
Thursday Night:
Mostly cloudy in the evening, then becoming partly cloudy. A 40 percent chance of rain. Lows in the mid 30s.
Friday:
Mostly sunny with a 20 percent chance of rain. Highs in the upper 50s.
Friday Night:
Partly cloudy in the evening, then clearing. Lows in the upper 30s.
Saturday:
Sunny. Highs in the lower 60s.

Sylvan 40 50 33 52

East Portland Metro-
Including the cities of Fairview, Gresham, and Troutdale 502 PM PDT Sat Mar 28 2026

Tonight:
Partly cloudy. Lows around 40. Winds light.
Sunday:
Rain likely. Highs in the lower 50s. South wind 5 to 10 mph, becoming southwest in the afternoon. Chance of rain 70 percent. Rainfall amounts less than a tenth of an inch.
Sunday Night:
Mostly cloudy with a chance of rain in the evening, then partly cloudy after midnight. Widespread frost after midnight. Lows in the lower 30s. West wind 10 to 15 mph. Chance of rain 50 percent. Rainfall amounts less than a tenth of an inch.
Monday:
Widespread frost in the morning. Sunny. Highs in the mid 50s. Winds light, becoming north 5 to 10 mph in the afternoon.
Monday Night:
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 30s. North wind 5 to 10 mph, becoming light after midnight.
Tuesday:
Mostly sunny. Highs around 60.
Tuesday Night:
Mostly cloudy with a 50 percent chance of rain. Lows in the lower 40s.
Wednesday:
Rain. Highs in the lower 50s. Chance of rain near 100 percent.
Wednesday Night:
Rain. Lows around 40. Chance of rain near 100 percent.
Thursday:
Rain. Highs in the lower 50s. Chance of rain 90 percent.
Thursday Night:
Mostly cloudy with a 50 percent chance of rain. Lows in the upper 30s.
Friday:
Partly sunny with a 20 percent chance of rain. Highs in the upper 50s.
Friday Night:
Partly cloudy in the evening, then clearing. Lows in the upper 30s.
Saturday:
Sunny. Highs in the mid 60s.

Troutdale 40 52 33 56 Gresham 40 52 32 55

Outer Southeast Portland Metro-
Including the cities of Boring, Sandy, and Estacada 502 PM PDT Sat Mar 28 2026

Tonight:
Partly cloudy this evening, then becoming mostly cloudy. Lows in the upper 30s. Winds light.
Sunday:
Rain likely. Highs in the lower 50s. Winds light, becoming west 5 to 10 mph in the afternoon. Chance of rain 70 percent. Rainfall amounts less than a tenth of an inch.
Sunday Night:
Mostly cloudy. Rain likely in the evening, then a slight chance of rain and snow after midnight. Widespread frost after midnight. No snow accumulation. Lows in the lower 30s. West wind 5 to 10 mph. Chance of precipitation 60 percent. Rainfall amounts less than a tenth of an inch.
Monday:
Widespread frost in the morning. Sunny. Highs in the mid 50s. Winds light, becoming north 5 to 10 mph in the afternoon.
Monday Night:
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 30s. North wind 5 to 10 mph, becoming light after midnight.
Tuesday:
Mostly sunny. Highs in the upper 50s.
Tuesday Night:
Mostly cloudy with a 50 percent chance of rain. Lows in the lower 40s.
Wednesday:
Rain. Highs in the lower 50s. Chance of rain near 100 percent.
Wednesday Night:
Rain. Lows in the upper 30s. Chance of rain near 100 percent.
Thursday:
Rain. Highs in the lower 50s. Chance of rain near 100 percent.
Thursday Night:
Mostly cloudy with a 50 percent chance of rain. Lows in the upper 30s.
Friday:
Partly sunny with a 20 percent chance of rain. Highs in the mid 50s.
Friday Night:
Partly cloudy in the evening, then clearing. Lows in the upper 30s.
Saturday:
Sunny. Highs in the lower 60s.

Damascus 40 51 32 53 Sandy 38 49 31 52 Estacada 38 51 30 54

Tualatin Valley-
Including the cities of Sherwood, Hillsboro, Forest Grove, Rockcreek, and Tigard
Mar 28 2026 502 PM PDT
Tonight:
Partly cloudy. Lows in the upper 30s. Winds light.
Sunday:
Rain likely. Highs in the lower 50s. Winds light, becoming west 5 to 10 mph in the afternoon. Chance of rain 70 percent. Rainfall amounts less than a tenth of an inch.
Sunday Night:
Mostly cloudy with a slight chance of rain in the evening, then partly cloudy after midnight. Widespread frost after midnight. Snow level 1000 feet. Lows in the lower 30s. Northwest wind 5 to 10 mph. Chance of rain 20 percent.
Monday:
Widespread frost in the morning. Sunny. Highs in the mid 50s. Light and variable winds, becoming light in the afternoon.
Monday Night:
Mostly clear in the evening, then becoming partly cloudy. Widespread frost after midnight. Lows in the lower 30s. Winds light.
Tuesday:
Partly sunny. Highs in the upper 50s.
Tuesday Night:
Mostly cloudy with a 50 percent chance of rain. Lows around 40.
Wednesday:
Rain. Highs in the lower 50s. Chance of rain near 100 percent.
Wednesday Night:
Rain. Lows in the upper 30s. Chance of rain near 100 percent.
Thursday:
Rain. Highs in the mid 50s. Chance of rain 90 percent.
Thursday Night:
Mostly cloudy in the evening, then becoming partly cloudy. A 40 percent chance of rain. Lows in the mid 30s.
Friday:
Mostly sunny with a 20 percent chance of rain. Highs in the upper 50s.
Friday Night:
Partly cloudy in the evening, then clearing. Lows in the upper 30s.
Saturday:
Sunny. Highs in the mid 60s.

Beaverton 40 54 32 56 Hillsboro 38 52 30 55 Forest Grove 38 52 32 55 Tualatin 40 54 32 56