Weather is probably a major factor when you plan your trip to North Palm Beach, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and July with an average temp of 82°F, while the coldest months are January and February with an average of 70°F. The rainiest months in North Palm Beach are June, August, September, and July, with each month seeing an average of 10 inches of rainfall.