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.

Why Are Cocks or Roosters on Weathervanes?

Insects, Spiders, and Other "Creepy-Crawly" Bugs That Forecast Weather

Woolly Bear Weather Lore: Caterpillar Predictions Explained

Find the Temperature Conversion Formula, Chart, and Calculator!

Discover how animals, plants, and old weather rhymes can hint at a harsh or mild winter—and what science says about it.

Think lightning won’t strike twice? Think again. Learn essential lightning safety rules, shocking facts, and common myths to avoid during storms.

Learn how to protect yourself during dangerously hot weather with these heat wave safety tips and essential facts about extreme heat.

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?

What relative humidity is, and how to measure it yourself!

The Year Without a Summer

Why Hail Happens in Summer + Hailstorm Damage Scale

Learn How Weather Has Shaped Our Lives!

Or Was It Just a Stroke of Luck?

Wild Weather on Thanksgiving Day!

The Facts Behind Weather Folklore

Learn How to Prepare for and Survive a Flood

Don’t Get Caught in the Cold: Expert Tips to Survive the Next Blizzard

How the Medieval Warm Period Shaped Valentine’s Day Traditions

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

Looking Back at Memorable February Storms

Plus: 5 Tips to Survive Frostbite

The Weather Temperature Roller Coaster

5 Historic Moments That Weather Changed Forever

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

Signs in nature of a cold winter

What was the weather for the Pilgrims?

It's true! Learn the science behind this weather folklore.

Are Our Feline Friends Purr-fect Prognosticators?

What Supplies Do You Need for an Emergency?

Animals That Predict Rain, Storms, and Cold Weather

Think Globally, Act Locally

What to do Before, During and After a Hurricane

How Climate "Normals" and "Averages" Are Calculated

May Weather Folklore

Learn How a Wobbly Polar Vortex Can Bring Extreme Cold

Inside the Thermosphere Climate Index

Believe It Or Not, Weird Weather Saved America!

Sun and Earth Moving in Opposite Directions?

Three Ways to Get Involved!

Weather Observations and Age-Old Wisdom

Weather Proverbs for Each Month of the Year

What to Look Out for When Flooding is Imminent