In Boise, Idaho, where the temperature topped 97 for a stretch of 14 out of 15 days this month, Sarah O’Keefe refuses to give in.... With the mercury repeatedly soaring into triple digits, she started waking up hours earlier, added afternoon siestas to her routine and installed a sprinkler to cool her hot metal roof.... When highs topped 90 degrees for a few days before returning to the more ordinary 60s, she checked her grandkids and herself into a local hotel for the AC and the pool....