Weather
Midwest Weather Oct. 20-26: Warmth, Rain Ahead of Halloween
Chicago, IL – The final stretch before Halloween could feel unusually mild across much of the Midwest, while increasing precipitation chances in portions of the region raise questions about how dry th
By Grant Holloway · 2026-10-13T10:00:01.147Z
Chicago, IL – The final stretch before Halloween could feel unusually mild across much of the Midwest, while increasing precipitation chances in portions of the region raise questions about how dry the second half of October will remain.
A developing late October pattern favors warmer than normal temperatures from Illinois and Indiana through Iowa, Wisconsin, Michigan and Ohio during October 20 26, with wetter conditions possible in some locations.
According to NOAA's Climate Prediction Center, the 8 14 day temperature outlook issued Monday, October 12, shows widespread probabilities of above normal temperatures across the central and eastern United States.
Much of the Midwest falls within a 60% to 80% probability range for above normal temperatures, making warmth one of the stronger signals in the extended forecast.
Rain Chances Could Complicate the Warmup While temperatures are favored to remain above seasonal averages, precipitation probabilities present a more mixed picture.
NOAA's 8 14 day precipitation outlook indicates increased odds of above normal precipitation in portions of the Midwest, although the wetter signal does not cover every state equally.
This could create opportunities for periods of rain alongside the milder temperatures, particularly where developing weather systems track through the region.
However, the outlook does not establish specific rainfall amounts, storm timing or severe weather threats.
Could Warmth Continue Into Halloween? The longer range temperature outlook offers another interesting signal.
NOAA's Week 3 4 forecast, covering October 24 through November 6, continues to favor above normal temperatures across much of the Midwest, suggesting the warmer pattern could persist beyond October 26.
Precipitation confidence is lower, with no strong wet or dry signal across many areas during that extended period.
Halloween falls on Saturday, October 31, meaning it remains too early to determine whether trick or treating conditions will be rainy or dry.
For now, the clearest takeaway is a warmer than average October 20 26 period across the Midwest, with precipitation opportunities varying by location.