Environment Canada's information on the climate in Ross River notes that the average temperature in July is 13.6 degrees Celsius, with daily maximums averaging 20.9 degrees C. The January average temperature in Ross River is minus 27.2 degrees C, with daily highs reaching minus 21.8 degrees C. Average annual rainfall in Ross River is 161.3 millimetres. Average annual snowfall is 98 centimetres, with a range between 146 and 67 cm over 15 years of records.
