Best temperature to stain wood outside. Temperature and humidity can have major effects on how your stain dries. For most stains 70 degrees fahrenheit is the optimum with the safety range from 50 to 90 degrees fahrenheit. Stains do vary so check the label first. Stain shouldnt be applied if the thermometer falls below 100 c and if rain is expected within 24 hours after application.
Say its winter and youre staining a piece of patio furniture thats been outdoors. Apply stain when air and wood surface temperatures are between 500 900f. The wood piece youre painting also needs to be at that optimal temperature for the best results. Sun or shade if the side is in direct sunlight then its possible to apply the stain at a lower air temperature.
In extreme cases the product will just stay wet until the humidity decreases or the temperatures rises. Quality of product always check the label. If its too wet or cold the drying time for stains can easily double. Avoid applying in direct sunlight.
Dont apply stain if rain is in the forecast for the next 24 48 hours it is ideal to stain your deck in a season that experiences mild temperatures. 10 degrees is the minimum temperature i have been told the minimum temperature depends on the type of stain you are using. Apply stain only at the proper temperature. Even if you bring the piece indoors where its warm to do the staining the cold wood may make the staining process difficult.
Most cans will tell you the range in which the product is best applied. Typically water based formulas require a temp above freezing. Harsh uv rays battering rain and temperature extremes can take a toll on your wood deck leaving it faded and dull.