U.S. Temperature/Precipitation Rankings for Mid-to-Late Summer 2021

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10/03/2021, 5:13 pm EDT
Northeast Pacific Horseshoe SSTA Pattern Forming
10/15/2021, 1:45 pm EDT
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JUL/AUG/SEP 2021 was the 3rd hottest on record given the 127-year climatology and 15th wettest in that time period. Most impressive was the record wet climate during that time for New York, Massachusetts and Rhode Island.

September 2021: September 2021 was the 4th warmest in the 1895-2021 climatology for the U.S. No state observed record warmth. However, 20 states were in the MUCH ABOVE normal category including most of the West and Central U.S. plus the Northeast Corridor (Fig. 1). Nationally, the U.S. was 43rd driest for September 2021 including top-11 (rankings) of dryness for Montana and Texas to MUCH ABOVE normal rainfall in the Northeast (Fig. 2).

Fig. 1: NOAA U.S. state rankings for temperature during September 2021.

Fig. 2: NOAA U.S. state rankings for precipitation during September 2021.

JUL/AUG/SEP 2021: JUL/AUG/SEP 2021 was steamy hot across the U.S. The 90-day period was 3rd warmest on record (Fig. 3) while the precipitation pattern was 15th wettest on record (Fig. 4). All of the West and nearly all of the North U.S. ranged in the MUCH ABOVE normal temperature category. Most of the South/Southeast (except Florida) was near normal. New York and Massachusetts plus Rhode Island observed record rainfall for JUL/AUG/SEP 2021 while all of the eastern states (except North Carolina) were wetter than normal. Parts of the Great Plains were drier than normal.

Fig. 3: NOAA U.S. state rankings for temperature during JUL/AUG/SEP 2021.

Fig. 4: NOAA U.S. state rankings for precipitation during JUL/AUG/SEP 2021.