About Lightning in Idaho
Idaho averages 28 thunderstorm days per year, placing it above the national average of 25 days. Located at approximately 44°N latitude, Idaho is a mountainous inland state where summer thunderstorms develop over the Sawtooth and Bitterroot ranges, with dry lightning posing significant wildfire risk.
In Idaho, afternoon solar heating of mountain slopes drives rapid orographic thunderstorm development. Peak thunderstorm activity occurs during June through August, when conditions align for the most frequent lightning strikes. With a population of 1.8 million residents, storm awareness and lightning safety are important considerations for anyone living in or visiting Idaho.