Chicago has most 70-degree days in February since 1871

The mercury soared to 70 degrees Monday for the second time in three days making it the fourth straight day for rewriting Chicago’s record book. The NORMAL high in Chicago does not reach 70 degrees until May 15th, which underscores how unusual this warmth truly is.

Never before in 146 Februarys dating back to 1871 have there been two 70 degree or warmer days. And, while clouds and light rain Tuesday morning are likely to keep readings a bit cooler than Monday, it appears a third 70 degree or warmer temperature is likely on Wednesday, which would not only break the day’s 95 year old record high of 68 degrees set in 1922, but equal the TOTAL February 70s previously observed here in 146 years! A bit of a reality check arrives this weekend as more typical late February returns to the area.

By mid afternoon new record temperatures were in place and still rising across the Chicago area. The temperature at Chicago’s official O’Hare International Airport observation site reached 70-degrees shortly after 2PM CST – the old record for this date was 64-degrees set back in 1930. Midway was at 68-degrees as was Rockford, both still on the rise. The old record at Midway was 64-degrees back in 1983 and at Rockford 61-degrees in 1983.

This ties Chicago’s all-time record of 4 consecutive days with 60-degrees or higher set back in 1976. This also marks just the 5th 70-degree day in February since 1871.

70-degree days in February…

75-degrees on Feb 27, 1976
72-degrees on Feb 25, 2000
70-degrees on Feb 11, 1999
70-degrees on Feb 18, 2017
70-degrees on Feb 20, 2017