Weather will likely play an important role when you plan your trip to Kamiah, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and July, with an average temperature of 19°C, while the coldest months are December and January, with an average of 0°C. The snowiest months in Kamiah are January, December, April and March, with each month seeing an average of 13 cm of snowfall.