National Weather Service United States Department of Commerce

Active Weather for the Rockies; Southern Plains Storm Taking Shape

Snow showers, squalls and strong winds will affect portions of the Cascades and Rockies through Wednesday. Meanwhile, a developing storm across the Southern Plains will track toward the Great Lakes into Thursday as severe thunderstorms, flash flooding and strong winds are forecast for the Mid-Lower Mississippi Valley. Heavy snow is possible for the Upper Midwest and wintry mix for the Northeast. Read More >

San Joaquin Valley, CA

Weather Forecast Office

Meteorological Calculator

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

Warming Trend
Much Cooler Saturday
Dense Fog Advisory
High Transportation Risk
High temperatures throughout Central California Wednesday afternoon will be a couple of degrees warmer than this afternoon. By Friday afternoon, maximum temperatures across Central California will be around five degrees above normal for this time of year.
Read More...
High temperatures throughout Central California Saturday afternoon will be around ten degrees cooler than Friday afternoon.
Read More...
A Dense Fog Advisory is in effect for a portion of the San Joaquin Valley from 2 AM PST tonight until 10 AM PST Wednesday morning. A Dense Fog Advisory means that visibilities will frequently be reduced to less than one quarter of a mile. If driving, slow down, use low beam headlights, and keep plenty of distance between your vehicle and the vehicle in front of you. Highways affected include, but are not limited to Highway 43, Highway 41, Highway 99 north of Pixley, and Highway 198 from Visalia to Lemoore.
Read More...
A Dense Fog Advisory is in effect for part of the San Joaquin Valley from 2 AM PST tonight until 10 AM PST Wednesday morning, resulting in a high transportation risk. Highways affected include, but are not limited to Highway 43, Highway 41, Highway 99 north of Pixley, and Highway 198 from Visalia to Lemoore.
Read More...

 

Text Product Selector (Selected product opens in current window)

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:
Follow us on Twitter  Follow us on Twitter
Follow us on Facebook  Follow us on Facebook
Follow us on YouTube  Follow us on YouTube
HNX RSS Feed  HNX RSS Feed