If you’re looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in North Bend: The hottest months are usually August and July, with an average temperature of 16°C, while the coldest months are December and February, with an average of 3°C. The rainiest months in North Bend are November, January, December and October, with each month seeing an average of 258 mm of rainfall.