Pour away brother. The rain on Thursday will only serve to wet the cured concrete which is actually beneficial.
Used to live in Sacto on Robertson, our biggest problem pouring there was trying to slow the cure in the dry summer heat.
08 SD250 2wd 5.4, 93 F450 7.3IDI, 08 4runner, 67 Imperial Crown, 49 Dodge Coronet parts, ask me why.
In wine there is wisdom. In beer there is freedom. In water there is bacteria.
The 2 biggest weather concerns with pouring concrete are freezing temps before it is cured, and hot dry weather that dries out the water before it has a chance to cure (concrete cures by hydration, not evaporation - the water becomes part of the concrete so if it dries out you get weak concrete). Rain during a pour is an issue if it is heavy, but not a day or more later. Heck, even rain a couple hours after finishing wouldn't be an issue if you cover it with plastic.
2005 F250 Lariat SuperCab Long Box 5.4 Auto 4x4
1999 Explorer AWD 5.0 4-door
I'd go so far as to water the surface of the concrete on Tuesday and Wednesday and not wait until Thursday for it to get rained on. As was mentioned, concrete likes having the water present - it will cure harder than it would in dry conditions.I'd wet it down every day for a week.
Avatar is a Pearl Ribbon in honor of my wife and the battle she is waging.
'03 F150 Sport 4x4 4.6L 5-speed, '05 Escape Hybrid, '06 Escape Hybrid
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.