Uh, Summer? Where’d you go?

June 28, 2016: Talk about a temperature swing- Sunday was in the 90’s (10° above average), then today was only in the mid 70’s (10° below average) in Rockford. Some locations didn’t even get out of the 60’s!

Afternoon temperatures for June 28, 2016

Afternoon temperatures for June 28, 2016

Why such a difference? A simple dip in the jet stream ushered in much cooler air from Canada, providing a little “free A/C” and giving us a break from the hot conditions from the past weekend.

Northwest jet stream winds are directing cooler air into the region this week.

Northwest jet stream winds are directing cooler air into the region this week.

The cool-down was significant enough that we almost broke a nearly 60-year-old record. The coolest high temperature for June 28 was set in 1959 at 75°. The high in Rockford this afternoon did manage to warm back to 75°, which ultimately tied today’s record.

Billboard 4

We’ll get the 80’s back tomorrow as the winds in the jet stream turn a little more out of the southwest, but another kink in the jet pushes cooler air right back into the region for the end of the week.

Another cold front keeps us in the 70's later this week.

Another cold front keeps us in the 70’s later this week.

The cooler pattern will change in time by Independence Day as highs return to average, then we could see another burst of heat close to the 90’s (or into the 90’s) by the end of next week.

Enjoy the cooler weather while it lasts!

-Alex

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Posted under weather

This post was written by Alex Kirchner on June 28, 2016

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