Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >

Rochester Climate Plot:

Switch to Buffalo Climate Plot

Click on the images below to enlarge

Monthly Temperature Plots:

Monthly Precipitation Plots:

How to Read the Plots:

This is an example of the monthly climate plot. The observed high and low temperatures are indicated by the tops and bottoms
of the vertical blue bars, respectively. The normal temperature ranges are indicated by the green band. Record highs are shown
on the top of the light pink band, and record lows are indicated along the bottom of the light blue band.

This is an example of the year to date climate plot. As with the monthly plot, observed temperatures are shown
by the dark blue areas, normals with the light green areas, record highs in the light red areas, and record lows in
the light blue areas. The bottom portion of the graph indicates the precipitation for the year to date. The yellow
line (and green area below it) represents the normal year to date total at the given time frame. Periods that have
year to date totals above the climatological normals are shown by dark green areas above the yellow line. Periods
that are below normal are shown with the brown areas below the yellow line.