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Weather References | Almanac.com

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.

Sun Safety: How Long Does it Take to Burn?

Find the temperature conversion formula, chart, and calculator!

How to Measure Hail Intensity

Know When Frostbite and Hypothermia Might Occur

Know When It's Safe to be on the Ice

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?