10-Day Weather Forecast for Castro Valley, California 94546 - The Weather Channel | weather.com

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Daily ForecastCastro Valley, California 94546· as of 5:19 PM UTC

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Spring Ushers In Extreme Pollen Across Deep South, Southeast

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Historic March Heat Wave Smashed US And Monthly Records In Over 170 Cities, From California To Pennsylvania

Deadly Runway Collision At New York's LaGuardia Airport

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Home & Garden

Don’t Make These Mistakes When Planting Your Spring Garden

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Get Ahead For Spring With Essential Winter Garden Tips

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On The Move

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California Wildflower Superblooms Are Back In 2026

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‘Rare And Remarkable’: Lake Superior Ice Caves Reopen

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Spring Is Here

Leaves Increasing On Trees In The South, Pollen On The Rise

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When Are The Average Last Freezes In The US?

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Allergy Season Grows Longer – Especially In These Places

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Record Warmth Is Almost Tripling Record Cold This Year

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We Love Critters

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Big Bear Bald Eagle Protecting Their Eggs During Windstorm Is the Most Inspiring Hero

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Dog Gives Dad the Cold Shoulder After Making Him Wear a Rain Coat, and We’re Cracking Up

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Excited Porcupines Jump up and Down With Excitement Being Let Back Outside After Snowstorm

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Dad’s Running Commentary While Rescuing His Pup From 20 Inches of Snow Is Pure Comedy

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Editor's Pick

What Happens When A Frisbee Team Hits The Slopes

When a Frisbee team takes a ski trip, you know things are about to get really fun on the slopes. Watch as they pull off some sick tricks while speeding down a mountain in Austria. They even got folks on the ski lift involved in the action.

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Sun & Moon

Chickpeas Can Be Grown In Space, Researchers Say

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Stay Safe

Dangerous Heat Threshold: Study Reveals 85-Degree Heat Index Triggers Sharp Rise In Workplace Injuries

Product Reviews & Deals

Best Electric Spin Scrubbers For Effortless Spring Cleaning

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