Rain a few days ahead of a launchis ideal, soft, but not too soft ground.
We have had very pleasant weather for most of the summer in the SF Bay Area --- too pleasant. We've had very little rain, and it's going to be a bad drought. So we'll be getting grumpy later in the year when the water rationing and wildfires kick in. Of course, today, when I had a million errands to run, it has been pouring down rain all day. A reasonable person would be glad, because we need every drop we can get, but I'm a little annoyed about the inconvenient timing.
The good news is that current forecasts show sunny and warm for the Snow Ranch launch on Saturday!