First of all the odds favor you, especially if you can delay your exit from work while a squall (if there is one) passes. Secondly, rain on a hot summer day isn't a problem, it's a blessing.
If the AM weather looks OK, ride to work, and roll the dice on getting home wet. Having commuted by bike rain or shine for 7 years, I've gotten to work wet countless times. It's no fun, but since I owned the business wasn't an issue. However, getting home wet shouldn't be a problem for anybody.
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WARNING, I'm from New York. Thin skinned people should maintain safe distance.