Warmth to return Thursday, humidity soon to follow
Several 90s remain in the forecast in the week ahead
ROCKFORD, Ill. (WIFR) - Air conditioners have gotten a much needed break Wednesday, as cool Canadian high pressure has settled in over the area. Temperatures Wednesday topped out in the upper 70s to lower 80s, levels still slightly above normal for this time of year.
More noticeable, though, was just how much less humidity is in the air. Dew points, a measure of the amount of moisture in the atmosphere, have fallen to levels not seen here all summer long, generally in the upper 30s to lower 40s.
The 81° in Rockford marked the 103rd time in which temperatures made it to 80° or above in 2021, and that tally’s certain to grow significantly in the days ahead.
Unlimited sunshine’s on tap again Thursday, and with a wind out of the southeast and eventually south, temperatures are to rise well into the 80s. Humidity, however, should remain in check for the most part.
Humidity should rise considerably on Friday as winds blow out of the south with increased gusto, tapping into moisture from the Gulf of Mexico. Skies are to start on a sunny note, though clouds will increase ahead of a cold front that will be approaching later on in the day. Still, before the front’s approach, temperatures will flirt with or potentially reach the 90° mark.
There may be just enough moisture ahead of the front to support the development of a few thunderstorms late Friday afternoon or Friday evening. The prospects for rain, though, are far from guaranteed.
Temperatures and humidity will dip ever so slightly Saturday, though we’ll remain well into the 80s. Humidity will once again surge Sunday and Monday, with 90s a realistic possibility both days.
Another weak front approaches late Monday, perhaps prompting another round of shower and thunderstorms. Again, chances don’t appear to be overwhelming by any stretch of the imagination. Cumulatively, the coming five days appear unlikely to produce any meaningful rainfall.
Unfortunately, organized rains don’t appear to be in the cards over the better part of the next week or two, meaning our rainfall deficit of more than 13 inches for 2021 is almost certain to grow significantly. September, 2021 may also close as having been one of the driest on record here.
Copyright 2021 WIFR. All rights reserved.