I-55 Weather and Live Radar Updates. Check 12 hour weather, wind, and temperature forecast on the I-55 corridor. Check conditions hour by hour with the time slider, switch between weather, temperature and wind views, and watch live radar for the route.
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Along I-55, expect mostly warm and humid conditions with scattered chances of thunderstorms and rain, especially in Missouri and Arkansas. Temperatures will be notably hot in southern areas, with some locations feeling above 100°F. Winds will generally be light to moderate, with occasional gusts near 20 mph in parts of Missouri and Mississippi. Skies range from mostly cloudy to overcast in northern Illinois, while southern sections experience clearer conditions.
