I-39 Current Weather Conditions with Radar. See 12 hour weather, wind, and temperature forecast on the I-39 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-39, expect mostly cloudy to overcast skies with scattered light rain chances in southern Illinois later in the period. Winds will remain generally light to moderate, with no significant gusts above 20 mph except near the southern end of the route. Temperatures will be mild, mostly in the 40s and 50s, with no extreme highs or lows forecasted.
