Des Moines, Iowa – Arctic air is expected to remain a dominant feature across Iowa from Jan. 24 through Jan. 30, bringing an extended stretch of below-normal temperatures and reinforcing persistent winter conditions statewide.
According to the National Weather Service Climate Prediction Center, Iowa falls within a roughly 60 percent probability zone for below-normal temperatures during the Jan. 24–30 period. While confidence is not as high as farther north, the signal still favors sustained cold with limited opportunities for meaningful warming before the end of the month.
Across northern Iowa, including Mason City, Decorah, and the Interstate 35 corridor, daytime highs are expected to run below late-January averages, with overnight lows frequently dipping into the teens and single digits. Prolonged cold will allow snow and ice to linger on rural roads and highways such as U.S. Route 18 and Highway 63.
In central Iowa, including Des Moines, Ames, and the I-80 corridor, temperatures are also expected to stay below normal throughout the Jan. 24–30 window. Even brief moderation periods may struggle to push highs much above the 20s, increasing the risk for refreezing on bridges, ramps, and untreated roads.
Southern Iowa is likely to see similar trends, though slightly less intense cold at times. Even so, nighttime temperatures will remain cold enough to maintain icy conditions where snow cover persists.
Iowa DOT urges drivers to remain cautious during early morning and nighttime travel. Residents are encouraged to protect exposed pipes, limit prolonged outdoor exposure, and check on vulnerable neighbors and pets.
The Arctic pattern shows limited signs of breaking before month’s end, and additional cold-related advisories may be issued if confidence increases or colder air deepens across the region.
