November and Fall 2021 Climate Summary

Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >

...A Look Back at the Climate for Meteorological Fall (September, October, November) 2021 for Chicago and Rockford... At Chicago, the average high temperature for the fall season was 64.9 degrees, which is 2.7 degrees above the 1991 to 2020 average. The average low temperature was 48.6 degrees, which is 3.1 degrees above normal. The mean temperature for the season was 56.8 degrees, which is 2.9 degrees above normal. A total of 7.71 inches of precipitation were recorded during the season, which is 1.33 inches below normal. Records established or tied during the fall months: The fall season of 2021 ranks as tied with 1927 and 1914 for the 8th warmest on record dating back to 1872. September: Tied with 1925 for the 5th warmest September on record since 1871. October: Tied 9th warmest October on record since 1872. * Record daily warmest minimum temperature of 70 degrees on the 10th. * Record daily precipitation of 1.85 inches on the 24th. November: 8th driest November on record since 1872 with 0.71 inches of precipitation. At Rockford, the average high temperature was 66.2 degrees, which is 4.6 degrees above normal. The average low temperature was 44.1 degrees, which is 2.1 degrees above normal. The mean temperature for the season was 55.1 degrees, which is 3.3 degrees above normal. A total of 6.27 inches of precipitation was recorded this past fall, which is 2.25 inches below normal. Records established or tied during the fall months: The fall season of 2021 ranks as the 8th warmest on record dating back to 1905. September: 9th warmest and 7th driest September on record since 1905. * Tied record daily warmest maximum temperature of 93 degrees on the 19th. * Record daily maximum temperature of 90 degrees on the 27th. October: 6th warmest October on record since 1905 with 57.9 degrees. * Record daily warmest minimum temperature of 67 degrees on the 2nd. * Tied record daily warmest minimum temperature of 67 degrees on the 10th. November: Tied 2nd driest November on record since 1905 with 0.38 inches of precipitation. $$ KJB

...A Look Back at the Climate for the Month of November 2021 for Chicago and Rockford... At Chicago, the average high temperature was 48.2 degrees, which is 0.2 degrees below normal. The average low temperature was 32.5 degrees, which is 1.6 degrees below normal. The average temperature for the month was 40.3 degrees, which is 1.0 degrees below normal. During the month of November, 0.71 inches of precipitation were recorded, which is 1.71 inches below normal. A Trace of snow was recorded, which is 1.8 inches below normal. No daily weather records were set for Chicago during the month of November 2021: One Top Ten Monthly Record: **8th driest November on record since 1872 with 0.71 inches of precipitation. At Rockford, the average high temperature was 48.9 degrees, which is 1.8 degrees above normal. The average low temperature was 28.4 degrees, which is 2.1 degrees below normal. The average temperature for the month was 38.6 degrees, which is 0.2 degrees below normal. During the month of November, 0.38 inches of precipitation were recorded, which is 1.89 inches below normal. 0.2 inches of snow were recorded, which is 2.1 inches below normal. No daily weather records were set for Rockford during the month of November 2021: One Top Ten Monthly Record: **Tied 2nd driest November on record since 1905 with 0.38 inches of precipitation. $$ KJB