Hoosier

Actual Mon highs: 95 ORD 97 MDW Was actually going to go 97 at MDW before deciding on 98. Just missed out on perfection today lol

Feel like I may be a degree high at Midway tomorrow. If I could change, would maybe go 102 there. Gonna hope and pray that ORD pulls out 100, but low-medium confidence at best.

LOT has 99 at ORD tomorrow. That better not happen... I mean, that has to be one of the worst numbers for a wx nerd. Would rather come up short by 2. Tomorrow's progged 850 mb temps are actually about the same as today in N IL, so at first glance you'd be wondering how it could outperform today. But there a couple things working in favor... 1) temps tomorrow morning will have a several degree head start over this morning and 2) mixing should be deeper/more efficient.

Noice

4 pm 94 ORD 96 MDW Let's see if there's a little left in the tank...

Hopefully that is the real temp and not a rounded ob.

92 at both ORD and MDW. Hmm

Some clouds are spilling southwestward over Lake Michigan. Don't think this will be a significant factor for highs in northeast IL but something to watch.

Mentioned it up the thread, but I think we could have a late-ish high again today with this setup and being near the solstice. Yesterday highs held off until around 5 pm central at ORD/MDW and temps stayed at those highs for like 45-60 mins.

Your first call might be the better one.

An interesting development is that so far, MDW is not out ahead of the pack from the other Chi area obs. Kinda hard to figure that one.

85 at MDW and 83 at ORD. Both places went up 11 degrees after 11 am yesterday. May not be an exact repeat today but should be a decent general guide. This drier type of airmass allows a bit more warming than usual after late morning.

It's still 90 in Fargo.

It definitely tends to be too quick to cool temps after peak heating, especially in more urban areas. A lot of models have that problem though.

Up to 88 at MDW. Today just reaffirms my thought that going with or even a little above the warmest guidance should be a pretty good play for Chi area for Mon/Tue.

4 degree spread between ORD and MDW right now. That's nice. MDW being at 87 is the sign to me that upper 90s are in play there tomorrow. Based on various factors, I have been figuring that tomorrow adds ~10 degrees to the highs in the area (obviously more than that for areas impacted by lake breeze today)

Although it's not as extreme as that day a while back, it's another impressively low RH day around Chicago with humidity values under 25%

100 in Fargo. Record there is 101.

It's gradual, but am noticing the grass turning from that vibrant green to a less vibrant one with some brown spots mixing in.

That is like pretty much exactly what the Euro 2m has I think.

Would it be too much trouble to ask for some numbers for tomorrow?

Not in our sub, but the forecast low in Fargo tomorrow morning is 80.

With the recent acclimation factor, it seems quite possible that this won't feel quite as hot as the last round of heat. Plus the actual heat index numbers may simply not top out quite as high.

May have a shot to dip below 50 here.

A little background info on 100+ degree days for Chicago in case it becomes relevant... There have been 65 such days since records began. In earlier years, the official observation site for the city was located downtown, which suggests that there would've been more 100+ degree days in earlier decades had the official site been located farther inland (less prone to lake breeze). Conversely, with the move of the official observation site to Midway Airport and then to O'Hare as of 1980, it's possible that some 100+ degree days at those locations may not have been as hot downtown. Just some things to keep in mind. Anyway, as said, there have officially been 65 days of 100+ for Chicago. Of those 65, only 6 of them have occurred on or before June 21, so all in all we are looking to accomplish something that is quite rare this Tuesday. By the way, all of the years that produced a 100 degree temp on/before 6/21 went on to produce at least 1 more, but would caution about small sample size. Monthly breakdown of 100+ degree days for Chicago: Jun: 14 Jul: 36 Aug: 11 Sep: 4