St. Louis, Missouri – Cold temperatures and low wind chills are affecting the St. Louis metro area Tuesday morning, with gradual warming expected as the week progresses, according to the National Weather Service.
As of early Tuesday, conditions at St. Louis Lambert International Airport showed clear skies with a temperature of 17 degrees. Northwest winds near 12 mph were producing wind chill values around 4 degrees Fahrenheit, or approximately −16 degrees Celsius, creating hazardous cold exposure conditions for those outdoors.
According to the National Weather Service forecast, Tuesday will remain dry with increasing clouds and a high near 35 degrees. While temperatures will recover slightly during the afternoon, cold conditions persist through the day, especially during shaded and early-morning hours.
Tuesday night temperatures are expected to drop to around 29 degrees under mostly cloudy skies. Wednesday brings partly sunny conditions and a warmer afternoon, with highs near 43 degrees. Winds will remain light, allowing for a more noticeable improvement compared to earlier in the week.
Wednesday night lows are forecast near 27 degrees, followed by a mostly sunny New Year’s Day with highs around 40 degrees. The warming trend continues into Thursday and Friday, with highs reaching near 46 degrees by the end of the workweek. Overnight temperatures remain below freezing through Friday night.
No significant precipitation is expected during this period, and road conditions should remain dry. However, repeated overnight freezes may still create localized slick spots on untreated surfaces during early morning hours.
The cold mornings may impact commuters, students, and outdoor workers across the St. Louis region, particularly during early travel periods. Residents are encouraged to dress in layers, limit prolonged outdoor exposure, and take precautions for pets during freezing nights.
Forecast updates and additional weather information are available through weather.gov and NOAA Weather Radio as conditions continue to evolve across eastern Missouri and southwestern Illinois.
