Other facts from our historical weather data: When is the rainy season in Crescent City? Rainy season in Crescent City occurs in the months of January, February, March, November and December. Does Crescent City have a dry season? Yes, the months of July and August are very dry. Which is the warmest month in Crescent City? September has an average maximum temperature of 17°C (63°F) and is the warmest month of the year. Which is the coldest month in Crescent City? The coldest month is January with an average maximum temperature of 12°C (54°F). Which is the wettest month in Crescent City? December tops the wettest month list with 351mm (13.8 in) of rainfall. Which is the driest month in Crescent City? August is the driest month with 9mm (0.4 in) of precipitation. Which is the sunniest month in Crescent City? July is the sunniest month with an average of 387 hours of sunshine. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.