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Hourly WeatherNorth Chelmsford, Massachusetts 01863 · as of 5:15 PM UTC

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On The Move

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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Expert Reveals Why This Is America's Most Turbulent Airport

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Don't Miss

A Severe Weather Outbreak Is Forecast In the Plains With Strong Tornadoes Possible From Texas To Iowa

Louisiana Shaken By 4.9 Magnitude Earthquake

Record Warmth Likely, Peaking Friday And Again Next Week

Wisconsin Officer Pulls Man From Deadly Winter Waters

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We Love Our Critters

Watch: Golden Retriever Goes Kitesurfing In Brazil

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Ewe Won’t Stop Laughing At Sheep Sliding Down Icy Hill

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Punch The Monkey Learns How To Shelter From The Rain

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Bears Charge Across California Ski Slope Near Lake Tahoe

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Spring Is Here

A Meteorologist's Survival Guide To Daylight Saving Time

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Allergy Season Grows Longer – Especially In These Places

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See It: Death Valley Explodes With Wildflowers In Rare Bloom

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Record Sargassum Could Threaten Your Spring Break Beach Trip

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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

Allergy Season Grows Longer – Especially In These Places

Is the seasonal part of “seasonal allergies” becoming a thing of the past? Newly released data from Climate Central shows that since the 1970s, allergy season has grown longer in every part of the United States, by an average of 21 extra “freeze-free” days. That gives plants more time to grow and release the pollen that makes so many of us miserable. Watch this video to see how much longer allergy season is in your area.

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Sun & Moon

Looking Up? Light Pollution Can Ruin Your Viewing Night

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Stay Safe

Knowing The Different Tornado Warnings Could Save Your Life

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