Planning for the weather is an important factor for making your trip to Kasilof a success, especially when you're splurging. The hottest months are usually July and August, with an average temperature of 12°C, while the coldest months are January and December, with an average of -6°C. The snowiest months in Kasilof are December, February, November and March, with each month seeing an average of 55 cm of snowfall.