Cowlitz River 7 Day Fishing Forecast Outlook
Thinking of heading out to Cowlitz River At Castle Rock over the next few days. If so get you'll find all your weather information you'll need over the next seven days. Please ensure to adhere to the fishing regulations for the state. Remember, regulations are there to protect fish species and enable fishing for generations to come. Determine which day is best for you the bag your best catch on Cowlitz River.
Thu 19th March, 2026 Weather Conditions For Cowlitz River
Temperature
During the day the maximum temperature will be 58°F with a min temperature of 52°F around Cowlitz River . The average temperature will be 54°F during the day.
Cloud Cover & Rain
Pretty good cloud cover today at 83% although there may be times when the sun will break through but should be enough cloud cover to find a good spot on Cowlitz River. With that level of cloud coverage in the sky there is a 100% probability of rain.
Wind Direction
I'm sure you've heard of the old sying: “Wind from the West, fish bite the best. Wind from the East, fish bite the least. Wind from the North, do not go forth. Wind from the
South blows bait in their mouth.”. It's more of a wife tail but always fun to recollect.
Its less so about the direction but the cause for the direction. We’ll cover this more in a blog post soon but for Cowlitz River on Thu 19th March will be from a south easterly direction which means fishing is poor.
Wind Speed
With the wind forecasted at 4mph hardly a puff out there makes for a calm mirror like surface. With the wind so light less ripples in the water makes it more difficult to mask the line and lure on Cowlitz River
Winds may gust up to 7mph
Fri 20th March, 2026 Weather Conditions For Cowlitz River
Temperature
During the day the maximum temperature will be 55°F with a min temperature of 49°F around Cowlitz River . The average temperature will be 54°F during the day.
Cloud Cover & Rain
Pack your bags, rod and head out the door right now as you've got 100% cloud cover over Cowlitz River. You chances of bagging a few has increased. With that level of cloud coverage in the sky there is a 0% probability of rain.
Wind Direction
I'm sure you've heard of the old sying: “Wind from the West, fish bite the best. Wind from the East, fish bite the least. Wind from the North, do not go forth. Wind from the
South blows bait in their mouth.”. It's more of a wife tail but always fun to recollect.
Its less so about the direction but the cause for the direction. We’ll cover this more in a blog post soon but for Cowlitz River on Fri 20th March will be from a south westerly direction which means fishing is optimal.
Wind Speed
With the wind forecasted at 3mph hardly a puff out there makes for a calm mirror like surface. With the wind so light less ripples in the water makes it more difficult to mask the line and lure on Cowlitz River
Winds may gust up to 5mph
Sat 21st March, 2026 Weather Conditions For Cowlitz River
Temperature
During the day the maximum temperature will be 47°F with a min temperature of 39°F around Cowlitz River . The average temperature will be 43°F during the day.
Cloud Cover & Rain
Cloud cover not as optimal today at 50% but still enough cover there to grab a catch on Cowlitz River With that level of cloud coverage in the sky there is a 0% probability of rain.
Wind Direction
I'm sure you've heard of the old sying: “Wind from the West, fish bite the best. Wind from the East, fish bite the least. Wind from the North, do not go forth. Wind from the
South blows bait in their mouth.”. It's more of a wife tail but always fun to recollect.
Its less so about the direction but the cause for the direction. We’ll cover this more in a blog post soon but for Cowlitz River on Sat 21st March will be from a north westerly direction which means fishing is optimal.
Wind Speed
Good news, the wind speed is forecasted to be at 5mph and considered in the optimal range for fishing as the ripples caused by the wind on the water's surface will help hide the line an lure on Cowlitz River
Winds may gust up to 6mph
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