Weather will likely play an important role when you plan your trip to Bellaire, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and August, with an average temperature of 18°C, while the coldest months are February and January, with an average of -4°C. The snowiest months in Bellaire are January, February, March and November, with each month seeing an average of 45 cm of snowfall.