Hourly Weather Forecast for Mercersburg, Pennsylvania - The Weather Channel | weather.com

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Hourly WeatherMercersburg, Pennsylvania · as of 12:57 AM UTC

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On The Move

And The Best State For An Adventure Vacation Is ...

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California Wildflower Superblooms Are Back In 2026

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3 Big Changes Coming To National Parks In 2026

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‘Rare And Remarkable’: Lake Superior Ice Caves Reopen

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Don't Miss

Hawaii Hit With Worst Flooding In Past 20 Years

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

Hawaii Flooding Forces Actor Jason Momoa To Evacuate

Major League Baseball Is Back This Week: Here’s Where The Forecast Could Be A Foul Ball

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We Love Our Critters

What To Look Out For With Your Dogs This Allergy Season

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Stick Is Life! Watch This Dog Plow Through 20 Inches Of Snow

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Snow Vs. Short Legs: Watch This Corgi’s Blizzard Battle

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Newly Identified Tick-Borne Bacterium In US Dogs

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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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Home & Garden

Don’t Make These Mistakes When Planting Your Spring Garden

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When To Worry About Mold Growing In Your Home

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Get Ahead For Spring With Essential Winter Garden Tips

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Why Your Home's Air Might Be More Polluted Than Outdoors

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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

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