
The next blast of Arctic air surges south down the Plains, across the Great Lakes and through the Southeast and East Friday through Saturday. This could be longest duration of cold in several decades. Forecast models are being closely monitored for potential of another significant winter storm to impact the eastern United States this coming weekend. Confidence in coastal impacts has increased. Read More >
National Weather Service Hanford, CA
Meteorological Calculator
Thanks to Ron Murphy, NWS Birmingham, AL for writing the JavaScript.
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Temperature Conversion |
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| Enter a number then click on the the conversion button. | ||||
| Fahrenheit (o F) |
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| Celsius (o C) |
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Wind Speed Calculations |
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| Enter a speed into any blank to convert to all other wind speeds. | ||||||
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mph knots m/sec km/hr |
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Wind Chill Calculation |
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| Enter the temperature in degrees Fahrenheit and wind speed in mph, then click on the Calculate WC to compute the windchill index. | ||||||
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Wind (mph) |
Index |
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Relative Humidity Calculation |
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| Enter the air temperature and the dew point in degrees Fahrenheit, then click on the Calculate RH to compute the relative humidity. | ||||||
| Temp (o F) |
Dew Point |
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Heat Index Calculations |
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| Enter the temperature in degrees Fahrenheit and relative humidity (RH) in percent (without the % sign), or the Dew Point (Tdp). Then click on the Calculate HI to compute the heat index (HI). | ||||||||
| Temp (o F) | RH | HI |
Tdp |
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| Temp (o F) | Tdp | HI | RH | |||||