MADISON, Wis. (WMTV) May has been a roller coaster ride so far temperatures wise. The first two weeks of the month were dominated by chilly below normal temperatures, while the second half the month our pattern appears to be setting us up for the opposite.
Take a look at the map below.
Notice how the jet stream dips southward from Canada. This is the reason why its been cooler than normal. The jet stream is a fast moving current of wind up around 30,000 feet. It plays a vital role in controlling temperatures at the surface. Through the next couple of days that "dip" in the jet stream is going to lift back up into Canada, allowing for a large warming trend.
Temperatures will be on the rise through the work week, likely making it to the mid 70's late in the week.