I plan on seal coating my brick pavers this morning with an expxy sealant and should finish by noon. The weather prediction for this afternoon is heavy rain. Will this be a problem?

What's the Can say? There's the answer hear.

The other question since you KNOW its going to rain why are you sealing it this morning. Doesn't make sense to me..

A little late for me to jump in but I'd say do not do it. Did you read the can like 21 recommends, good place to start