It happens here probably once a year, or every other year. One time, my son was about 9, it was cloudy, foggy, a warm front came through and it started to drizzle, suddenly we heard a loud CRACK/BOOM! You couldn't see the lightning, just hear the thunder. My son took one look at me, eyes wide, and sprinted for the house. I stayed out feeding hay to the horses, just laughing myself silly.
Looks like sunny days here will be non-existent for the next 4 days. We reached a high of 35 today.