National Weather Service United States Department of Commerce

Look for breezy conditions on Tuesday with westerly wind gusts of 25-30 mph. Highs on Tuesday will range from the mid-50s in NE MO and west central IL to around 60 in the St. Louis area to the lower 60s in SE MO and southern IL.
Look for breezy conditions on Tuesday and a brief warm-up on Wednesday. Temperatures will turn cooler again behind a cold front. The next chance for rain is on Thursday.
Long-term outlooks favor colder than average temperatures for Halloween week. To see Halloween climate records, visit https://www.weather.gov/lsx/halloween_climatology .