weather forecast?
did you look where she lives?
All she has to do is look out the window and she'll know what the weather is.
In fact could probably look at the weather on Sunday night and know if it was going to be good all week. Maybe even look on the first and be sure the weather would be good through the end of the month. In fact, there's only about a one-month period all year where there's any question about the weather in that part of California.