Originally Posted by big chainring

If you have problems with spoke tension due to weather change its best to put those wheels aside for a full cycle of seasons. It's like the wood you buy for your fireplace. It needs to season before you burn it. Same thing with spokes. If they are built into wheels the spokes need to season for a year. Otherwise you get spoke tensioning issues when the weather changes.

I typically build my wheels in a walk in meat freezer. Then when the wheels are exposed to the warm air outside they get a tempering. The expansion of the rim in relation to the spokes sets the ambient tension up a notch and tempers the spoke nipple creating a stiffer wheel.