Early June heat wave to potentially take on historic proportions
Rain chances remain elusive as drought worsens
ROCKFORD, Ill. (WIFR) - Just when you thought it couldn’t get any hotter than it did Wednesday, it did just that! In fact, the recently completed Thursday goes down in the books as having been the hottest not just of 2021, but rather the hottest in nearly nine years! The last time we were hotter than Thursday’s 97° high temperature, you’d have to go all the way back to July 25, 2012, a whopping 3,242 days ago!
90s in June aren’t uncommon here, but the frequency of which they’re occurring is quite rare. Seven of the month’s first ten days have registered 90°+ high temperatures in Rockford, a feat that had previously been accomplished in three other Junes. For the vast majority of those reading this, it’s the first time in your lifetime this has happened. The last time a June started with such frequent heat was all the way back in 1934. With another day of 90s in the books Friday, it’ll become just the third time we’ve started a June with 90s on eight of the month’s first eleven days. Should another 90° occur Saturday, we’d make history, as never before has a June begun with nine 90s in the first 12 days of the month.
90s are all but in the bag for Friday, as sunshine is set to dominate once again. A westerly breeze is also to blow throughout the day, coming from areas that reached the mid-90s today. For that reason, we think temperatures are to top out in very similar territory to where they did Thursday.
A cold front will approach Friday evening into the overnight hours. Could it bring rain our way? Quite possibly, though it’s far from a slam dunk. Current modeling has sped up the front’s arrival a bit. The thought earlier in the week was that rain chances would be confined to Saturday, especially later in the day. Now, the thinking has shifted, focusing instead on the midnight to sunrise window Friday night into Saturday morning.
By all accounts, Saturday’s shaping up to be a nice one. Whatever lingering cloudiness that may be around early in the day should clear the area by mid-morning, and sunshine’s to take us the rest of the way. Temperatures will remain on the hot side, though there’ll be a noticeable drop in humidity, as winds shift to the northwest and eventually the north.
Warm to hot conditions are likely to persist through Monday, though lower humidities are to settle in during that time, and a more significant rush of cooler, far more comfortable Canadian air arrives Monday night, promising an eminently comfortable, dry spell of weather.
Unfortunately, there’s not much, if any good news on the drought front. The drought’s expanding across much of the Upper Midwest, and in Illinois as well. Most of the Stateline finds itself in some state of drought, about half of it’s in moderate drought, with the northeastern quarter of the region characterized as being in a severe drought.
There’s not much rainfall on the horizon, so we’ll expect things to get worse before they get better. As things appear now, Friday night’s rain may very well be the only one on the docket over the next ten days. An average of three medium range forecast models generates only 0.18″ to fall over the period, just 10% of what’s normal during that time.
All signs point to warmth, if not heat, as well as elevated humidity in the back half of next week, perhaps continuing through Father’s Day weekend.
Copyright 2021 WIFR. All rights reserved.