Boone Severe Watches & Warnings NOAA Weather Radio

Public Information Statement
Statement as of 4:38 PM CDT on July 1, 2015

... June 2015 was the cloudiest June on record in Chicago...

If it felt like June was unusually cloudy in Chicago... data from 3
miles southwest of Midway Airport shows that it was. Only 46
percent of possible sunshine was observed. This set a new record
for the cloudiest June in Chicago. The previous record was set
back in 1942 when 48 percent of possible sunshine was observed.
The normal for percent of possible sunshine in June in Chicago is
65 percent.

Cloudiest junes on record in Chicago

Year percent of possible sunshine
---- ----------------------------
2015 46
1942 48
1928 49
1969 49

Sunshine records for Chicago go back to 1893.

Thanks to the midway 3sw cooperative observer Frank wachowski for
keeping and maintaining the sunshine percentage dataset since 1996
and providing NWS Chicago the data for this pns.

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