I believe every word of Uncle Dave's mosquito story because we have the same situation in southeast Alaska. Not all the time, because a new hatch comes out about every three weeks and mosquitoes bother humans for only a portion of that time. Only when the young require the protein of blood do the skeeters - always the female, only the females- harass us. Those periods do overlap so there is never a time from breakup to freezeup when you can really rest easy.
There is a bright side, however; although Alaska mosquitoes are big they are also dumb. They don't mind dying and a judiciously applied baseball bat can take out a goodly number in a speedy fashion.