Weather References

Find all your weather reference charts and tables at Almanac.com: how to measure tornadoeshurricane strength, windchillwind speedUV radiation risk, earthquakes, heat, and more. Plus, enjoy our free weather lore calendar.

How the Medieval Warm Period Shaped Valentine’s Day Traditions

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

Why Hail Happens in Summer + Hailstorm Damage Scale

Looking Back at Memorable February Storms

Plus: 5 Tips to Survive Frostbite

The Weather Temperature Roller Coaster

Largest eruption in recorded history led to global temperature drop

Wild Weather Anniversary: Record-Breaking Summer

The Facts Behind Weather Folklore

And Other Ways That Weather Influenced Historical Events

Why Are Cocks or Roosters on Weathervanes?

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.

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.

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

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

Find Out How Cold It Really Feels With Wind Chill

Quickly calculate the heat index to see how hot it really feels based on temperature and humidity

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

See how wind makes cold air feel colder—and how fast frostbite can happen.

Learn How Weather Has Shaped Our Lives!

Sun Safety: How Long Does it Take to Burn?

Or Was It Just a Stroke of Luck?

Wild Weather on Thanksgiving Day!

Animals That Predict Rain, Storms, and Cold Weather

Think Globally, Act Locally

The Year Without a Summer

What to do Before, During and After a Hurricane

May Weather Folklore

How Climate "Normals" and "Averages" Are Calculated

A stormy season of power outages

Believe It Or Not, Weird Weather Saved America!

Inside the Thermosphere Climate Index

Learn How a Wobbly Polar Vortex Can Bring Extreme Cold

Sun and Earth Moving in Opposite Directions?

Climate Events and What They Mean

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

Learn How to Prepare for and Survive a Flood

Estimate the Wind Speed with Your Eyes

When are the first and last frost dates of the year?

When are the first and last frost dates of the year?