Temperatures are expected to hit highs of 100 degrees or more in the Treasure Valley through Wednesday, according to the National Weather Service.
That would match a 6-day streak of triple-digit highs last year from July 7-12. This year's hot weather has come early, however; according to NWS records, all streaks of four or more days of 100-degree weather in Boise since 1931 happened in the months of July or August.
Sunday, Monday and Tuesday could reach record-breaking highs. Sunday is expected to be 104 degrees, passing the current record of 103 set in 1950. Monday and Tuesday are slated to shatter even older records: at 106 Monday and 107 Tuesday, Boise could be two degrees hotter each day than the standing records set in 1924.
It hit 101 Friday at the Boise Airport. That's just a degree shy of the record 102 for June 28 set in 2010.
July 4 is currently projected to be a balmy 96 degrees. The Independence Day record is 106, set in 1937.
The Treasure Valley is still better off than the Southwest, which is expected to bear the brunt of the weekend heat wave. Temperatures Sunday are projected to hit 118 in Phoenix and 117 in Las Vegas.
What can you do to stay safe? Drink plenty of water and limit your exposure to the sun in the week ahead. Do not leave children or pets in your car - the heat is multiplied by your vehicle's windows, and even 15 minutes inside can be fatal, the NWS warned.
The American Red Cross also offers the following tips:
- Stay hydrated by drinking plenty of fluids. Avoid drinks with caffeine or alcohol.
- Avoid extreme temperature changes.
- Wear loose-fitting, lightweight, light-colored clothing. Avoid dark colors because they absorb the suns rays.
- Slow down, stay indoors and avoid strenuous exercise during the hottest part of the day.
- Postpone outdoor games and activities.
- Use a buddy system when working in excessive heat. Take frequent breaks if working outdoors.
- Check on family, friends and neighbors who do not have air conditioning, who spend much of their time alone or who are more likely to be affected by the heat.
- Check on animals frequently to ensure that they are not suffering from the heat. Make sure they have plenty of cool water.
- If someone doesnt have air conditioning, they should choose places to go to for relief from the heat during the warmest part of the day (schools, libraries, theaters, malls).