Although weather is just one factor, it can really affect your travel plans, especially if you are planning a longer stay in Bynum. The hottest months are usually July and August, with an average temperature of 17°C, while the coldest months are February and December, with an average of -4°C. The snowiest months in Bynum are February, January, October and April, with each month seeing an average of 21 cm of snowfall.