Boise didn’t set a new record for the earliest triple digit day in history, but we came close toward the end of May 2025!
The earliest Boise’s ever hit 100º in a calendar year was May 29, 1987. If 2025’s first triple-digit day is any indication, we could be in for a long hot summer in Idaho’s capital city. Boise hit 100º for the first time this year on May 31, breaking a 115 year old high temperature record for the date.
As the person who pays our family’s power bill, it PAINED me to turn on the air conditioning that early in the year but when it reached 86º inside our apartment that day? I had to pull the trigger. It took a while to cool down, but eventually by the time we went to sleep it was a comfortable 73º indoors…