I15 Current Weather Conditions with Radar. See 12 hour weather, wind, and temperature forecast on the I15 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 I15, expect mostly dry and warm conditions with occasional light rain and thunderstorms in Montana. Winds will be notably strong in parts of Idaho and Utah, with gusts exceeding 30 mph in several areas. Clear skies dominate southern Utah and California, while northern sections experience more cloud cover and some rain chances. Temperatures will be hot in Arizona and Nevada, reaching near 100°F, while cooler and more moderate in Montana and Idaho.
