National Weather Service United States Department of Commerce

Flood Concerns in Parts of the East; Severe Weather for High Plains; Fire Weather in West

A stationary front will continue to produce thunderstorms and heavy rain that may result in flash flooding across the Carolinas and Mid-Atlantic today. Meanwhile, strong to isolated severe thunderstorms are possible from Montana to the southern Plains. Finally, a large area of elevated fire weather concerns with red flag warnings in effect across the West. Read More >

San Joaquin Valley, CA

Weather Forecast Office

Meteorological Calculator

Weather.gov > San Joaquin Valley, CA > Meteorological Calculator

Cool temperatures
Thursday will be the “coolest” day in Central California since June 29th.
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National Weather Service Hanford, CA
Meteorological Calculator
Thanks to Ron Murphy, NWS Birmingham, AL for writing the JavaScript.

Temperature Conversion
Enter a number then click on the the conversion button.
Fahrenheit
(o F)

Celsius
(o C)

Wind Speed Calculations
Enter a speed into any blank to convert to all other wind speeds.

 mph    knots       m/sec      km/hr  

Wind Chill Calculation
Enter the temperature in degrees Fahrenheit and wind speed in mph, then click on the Calculate WC to compute the windchill index.
Temp
(o F)

Wind
(mph)

Index 

Relative Humidity Calculation
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

Heat Index Calculations
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

OR
Temp (o F)

Tdp

HI  RH 

Station Pressure Calculation
What is the current altimeter (inches)?
What is the station elevation? (feet)
i.e. Fresno Air Terminal = 333
The Station Pressure in inches is:
The Station Pressure in millibars is:
The Pressure Altitude in feet is:
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