Winter Weather Advisory

Locations Affected

Saint Louis, MO ∙ O'Fallon, MO ∙ Saint Charles, MO ∙ Florissant, MO ∙ Saint Peters, MO ∙ El Dara, IL ∙ Patterson, IL ∙ Mount Clare, IL ∙ Holliday, MO ∙ Roxana, IL

Full Alert Message

URGENT - WINTER WEATHER MESSAGE National Weather Service St Louis MO 253 PM CST Sun Mar 1 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 AM CST MONDAY... * WHAT...Wet snow expected. Total snow accumulations up to one inch with a localized area of 2 to 4 inches possible. * WHERE...Portions of southwest and west central Illinois and central, east central, and northeast Missouri. * WHEN...From 6 PM this evening to 6 AM CST Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. In Illinois, the latest road conditions can be obtained at www.gettingaroundillinois.com. In Missouri, the latest road conditions can be obtained at traveler.modot.org/map or by calling 1-888-275-6636.

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