I never trust the weather! We've had snow in June. I'll never forget the year I emptied out the GH first week of June and put everything on racks on the north side of the woodshed to start hardening off. All of a sudden, we got this torrential hailstorm, and yup, it was coming out of the north and slammed all that hail into my poor little seedlings! Amazingly, I only lost a handful of plants, but I got absolutely drenched and frozen trying to protect them! Grrrrr!!!