CHICAGO (CBS) — Conditions will be idyllic as the work week comes to an end, but come the weekend, there is a chance of rain that could come when the Gay Pride Parade is in progress.

CBS 2 Meteorologist Mary Kay Kleist says it was already 80 degrees at O’Hare International Airport, 77 at Midway and 76 at the lakefront at 11:20 a.m. Winds were blowing at a polite 6 mph from the north.

The high for the day is 83, but the temperature will likely stay along the 70s lakeside. When the White Sox throw out their first pitch against the Milwaukee Brewers at U.S. Cellular Field at 7:15 p.m., it will be 75 with north winds of 5 to 10 mph.

The overnight low is 61 with clear skies, and high pressure will build over the eastern Great Lakes on Saturday while low pressure develops in the plains. Clouds will increase in Chicago, which lies right in between, as the high climbs to 84.

On Sunday, the low pressure pushes up through Chicago, bringing in a warm front and pushing temperatures up to the mid-80s. Showers and storms are anticipated after 1 or 2 p.m.

Now, showers and thunderstorms are good news. For the entire year so far, precipitation has amounted only to 12.65 inches – 2.9 inches below the average of 15.55 inches. Drought conditions are starting to build around Illinois.

However, need rain though we may, Mother Nature could surely pick a more convenient time for it. The Gay Pride Parade steps off from its new starting point at Broadway and Montrose Avenue at noon, and will continue for a few hours.

And during the parade, you might be inclined to join in a chorus of “It’s Raining Men” by the Weather Girls, but nobody wants it to start raining rain.

But don’t sweat it too much. The chance for rain is only 40 percent.

The high for Sunday is 85, and at the day’s end, a cool blast of air will push in from the northwest, dragging the high for Monday down to an unseasonably cool 72.

The high for Tuesday is 75, Wednesday 78, and Thursday 80.