Cooler days ahead followed by a rainy end to the week
Spring has officially "sprung" and after a mild start to the season, some cooler air will settle in as temperatures will fall below average through the middle of the week. The pattern will become active with some wet weather arriving just in time for the upcoming weekend.
Temperatures on Monday climbed to 18° above average, but as colder, Canadian air dives south we'll see a drop as readings will be almost 10° below average by Wednesday.
A storm system will develop and track northeast from the southern plains towards Iowa on Thursday. The airmass will be a juicy one as the storm will tap into some Gulf of Mexico moisture as it flows into the area behind an advancing warm front. Showers will develop Thursday night along the boundary, and as it pushes north on Friday temperatures will soar into the 60s.
There will be a break in the rain on Friday before the main low pressure moves closer by evening with showers redeveloping. There could be enough instability where a few thunderstorms could be possible. Periodic showers will continue through Saturday before the system finally pushes off to the east.
(Below is the GFS model projected path which could still shift)
Heavy rains are possible, especially if we can get enough moisture to funnel in. An early look at one of the models we use has parts of eastern Iowa getting over one inch. While these amounts aren't exact, the bottom line is some soaking rains are likely from the Thursday night through Saturday period. The umbrella will certainly come in handy.