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It is best to never stain any exterior wood when inclement weather is forecasted, especially rain. Most deck stain brands will warn against the application of their product within 12-24 hours of rain being forecast. But as we all know sometimes the weather is not so predictable.
Moreover, can you stain in the rain?
Always make sure the deck is clean and dry before you begin staining. Wait at least 24 hours after washing your deck to apply stain. Also, try to avoid staining your deck right before it rains. Most stains require at least 2-3 hours for drying.
Likewise, people ask, what happens if it rains on fresh stain?
If it rains within 48 hours after you apply the stain, the water will soak into the wood pores and try to displace the stain. This will result in a splotchy surface rather than an even tone. If it rains right after you apply the stain, the stain will peel and flake off.
Temperature extremes and damp conditions pose problems when applying a varnish. Weather that is too cold thickens the varnish, making it sticky and difficult to apply. Wet conditions inside or outside, as is the case on a rainy day, increases the drying time and allows moisture to get underneath the vanish surface.