Rain is a very localized phenomenon. When you are in town, you might not notice the storm hitting your farm.
Sclerotinia, botrytis, powdery mildew. They all thrive on wet leaves. The longer it’s wet, the more risks. That's why it’s even more dramatic when it rains at night.
We always feel bad when we forget something important. The reality is that you just have too much to remember it all. Sometimes, it doesn’t matter much. Other times, it means downy mildew.