Weather References
Find all your weather reference charts and tables at Almanac.com: how to measure tornadoes, hurricane strength, windchill, wind speed, UV radiation risk, earthquakes, heat, and more. Plus, enjoy our free weather lore calendar.
Learn how to protect yourself during dangerously hot weather with these heat wave safety tips and essential facts about extreme heat.
Climate Events and What They Mean
Quickly calculate the heat index to see how hot it really feels based on temperature and humidity
Wild Weather Anniversary: Record-Breaking Summer
Largest eruption in recorded history led to global temperature drop
Sun Safety: How Long Does It Take to Burn?
Think lightning won’t strike twice? Think again. Learn essential lightning safety rules, shocking facts, and common myths to avoid during storms.
What relative humidity is, and how to measure it yourself!
Why Hail Happens in Summer + Hailstorm Damage Scale
Estimate the Wind Speed with Your Eyes
Know When It's Safe to Be on the Ice
Don’t Get Caught in the Cold: Expert Tips to Survive the Next Blizzard
Discover centuries-old weather proverbs about rain, clouds, and the sky—and learn the science behind these traditional forecasts.
Looking Forward to Super Bowl LX and Back at Super Bowl Weather Through the Years
5 Historic Moments That Weather Changed Forever
How to Prepare for Extreme Winter Weather
Explore traditional New Year’s weather sayings—from onion forecasts to wind lore—and see what they predict for the year ahead.
What to Keep in Your Car or Truck in Case of an Emergency
It's true! Learn the science behind this weather folklore.
Find the Temperature Conversion Formula, Chart, and Calculator!
Are Our Feline Friends Purr-fect Prognosticators?
Woolly Bear Weather Lore: Caterpillar Predictions Explained
Insects, Spiders, and Other "Creepy-Crawly" Bugs That Forecast Weather
What Supplies Do You Need for an Emergency?
Discover how animals, plants, and old weather rhymes can hint at a harsh or mild winter—and what science says about it.
Find Out How Cold It Really Feels With Wind Chill
See how wind makes cold air feel colder—and how fast frostbite can happen.
Animals That Predict Rain, Storms, and Cold Weather
Learn How a Wobbly Polar Vortex Can Bring Extreme Cold
