Areas of Severe Thunderstorms and Excessive Rainfall Today

Scattered severe thunderstorms capable of damaging wind gusts and some hail are expected this afternoon and evening from the Upper Ohio River Valley into the Northeast, and from the Appalachians into the Mid-Atlantic States. Excessive rainfall from heavy thunderstorms may produce areas of flash flooding from southern New Mexico into the western and northern Gulf Coast into Wednesday. Read More >

How to obtain information for daily & monthly normal & extremes
(temperature, precipitation, and snowfall)

You can get data for:

Washington DC (includes DCA)
Baltimore (includes BWI)
Sterling-Dulles Airport (includes IAD)
Baltimore Downtown (includes DMH)
Annapolis (includes NAK)
Hagerstown (includes HGR)
Charlottesville (includes CHO) Airport

and several other locations

** For official data contact National Centers for Environmental Information **

How to obtain daily & monthly normals/averages (includes snowfall):
Click here

Select "1. Location"
Under "2. Product", select "Daily/monthly normals"
Under "3. Options" choose "Monthly" or "Daily", and then the "Variable" that you want
Finally hit "Go". Created is a graph with a chart of values below

How to obtain monthly extremes (includes snowfall):
Click here

Select "1. Location"
Under "2. Product", select "Monthly summarized data"
Under "3. Options" select the year range (note you can type POR for Period of Record)
Select the "Variable", and then under "Summary" select "Daily Maximum" or "Daily Minimum"
Finally hit "Go"

How to obtain daily extremes (includes snowfall):
Click here

Select "1. Location"
Under "2. Product", select "Calendar day summaries"
Under "3. Options" select the year range (note you can type POR for Period of Record)
Select the "Variable", and then under "Summary" make your selection
Finally hit "Go"

Click HERE to obtain other information on daily extremes/normals

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