There are many reasons why a climb may not “go”, from the route being too dry or too wet/snowy, wildfire closures, getting lost on the approach, or being attacked at base camp by a well organized gang of rock rodents.
So the weekend isn’t a total bust, consider bringing a guidebook or two for other nearby hikes or climbs in case the main destination doesn’t work out. If the primary climb goes, the guidebook stays in the car. That way, you may be able to enjoy an alternative destination, and still be able to salvage the trip. This becomes even more important with high gas prices and the longer a trip is from your home!
You can of course bring a physical guidebook. Or, it might be more convenient for you to buy a guidebook or two in Kindle format, and just keep that loaded onto your phone so it's always there.