Severe thunderstorms will be possible on Independence Day, mainly across parts of the Upper Mississippi Valley, Ozarks, and southern/central Plains. Excessive heat with possible record highs and warm overnight lows will continue to impact much of the West into next week. Dangerous heat is expected across the Southern U.S. and Mid-Atlantic into the weekend. Read More >
Baltimore/Washington
Weather Forecast Office
Temperature Conversion |
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Enter a number then click on the the conversion button. | ||||
Wind Speed Calculations |
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mph knots m/sec km/hr | ||||||
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. |
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. |
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). | |||||||
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US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Baltimore/Washington
Weather Forecast Office Baltimore/Washington
43858 Weather Service Rd.
Sterling, VA 20166
(571) 888-3500
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