Planning for the weather is an important factor for making your trip to Deadhorse a success, especially when you're splurging. The hottest months are usually July and August, with an average temperature of 5°C, while the coldest months are January and February, with an average of -23°C. The snowiest months in Deadhorse are November, October, April and January, with each month seeing an average of 34 cm of snowfall.