textproduct: Chicago

KEY MESSAGES

- Generally dry conditions are expected through the upcoming work week with a slow warming trend back to above average temperatures again by mid to late week.

DISCUSSION

Issued at 101 AM CST Sun Nov 15 2026

High pressure will slowly move across the area today and tonight with light winds and a weak lake breeze expected this afternoon. High temps will reach the upper 40s to around 50. The light winds may allow for some patchy/shallow fog to develop late tonight into early Monday morning, mainly for areas along and south of I-80 and have added patchy fog mention for this time period with this forecast. The high pressure will move east on Monday with southwest winds expected through Thursday with high temps slowly warming a few degrees each day with highs possibly tagging 60 Wednesday and Thursday and then high temps possibly into the lower/mid 60s Friday and Saturday. A weak cold front may move across the area Thursday bringing a low chance for a few showers and then a possibly stronger cold front may move across the region next weekend, bringing another chance for showers as well as cooler but still seasonable temps back to the region. cms

AVIATION /12Z TAFS THROUGH 18Z MONDAY/

Issued at 529 AM CST Sun Nov 15 2026

Light west/northwesterly winds today are expected to briefly become easterly/southeasterly at the Chicago-area terminals late this afternoon behind a very weak lake breeze. Winds will remain light tonight although may trend more southwesterly with time. There is some threat for shallow BR/FG development into early Monday morning. For now, have withheld any vsby reductions given uncertainties in afternoon dewpoint trends, but some consideration for lower vsbys may be needed in future TAF issuances, particularly at DPA and GYY.

Carlaw

LOT WATCHES/WARNINGS/ADVISORIES

IL...None. IN...None. LM...None.