‘Extreme heat’ forecast for Fresno. Here’s when and how high temperatures will get
Triple-digit temperatures are headed to the Fresno area for the first time in 2025, according to the National Weather Service.
The weather agency recently issued an extreme heat watch for Fresno and the rest of the Central Valley.
“(Maximum temperatures) will rise well above normal, with highs up to 105 degrees, and lead to major heat risk,” the weather agency wrote in an X post. “This level of heat can cause heat-related illnesses for much of the population.”
“This is our first major heat event of the year,” National Weather Service meteorologist Stephen McCoy told The Fresno Bee, describing it as the “driving factor” behind the extreme heat watch. “This is the first time we’re seeing these kind of temperatures this year.”
Strong winds and low humidity could result in a “minor fire risk” for Fresno and much of the Central Valley, according to the weather service said via X.
The National Weather Service recently issued its first fire weather watch of the season.
Here’s what to know:
How long is extreme heat watch in effect?
The extreme weather watch will remain in effect from 11 a.m. Friday, May 30, and it’s going to run until 7 a.m. Sunday, June 1, according to the National Weather Service.
Which areas could see dangerously hot weather?
According to the weather service, the extreme weather watch affects the San Joaquin and Kern River valleys as well as the lower Sierra Nevada foothills.
That includes the cities of Fresno, Bakersfield, Coalinga, Lemoore, Madera, Merced, Mariposa, Porterville, Sanger, Selma, Tulare and Visalia.
Lake Isabella and Yosemite Valley will also be affected, McCoy said.
The area that will be most affected by hot weather will be the West Side Hills, according to McCoy.
“Fresno County and western Kings County has the highest percentages for these temperatures,” he said.
How high will temperatures get?
On Friday, Fresno has a 15% chance of experiencing a maximum temperature greater than 105 degrees, the weather service said in an X post.
That chance will increase to 40% on Saturday, the weather agency said.
“Warmer temperatures will result in drier conditions across Central California, particularly in the San Joaquin Valley, southern Sierra foothills, Kern County mountains and West Side Hills,” the weather service said in an X post.
The relative humidity could drop to 15% to 20% in valley areas, McCoy said.
What’s in the forecast for Fresno?
The Fresno area was expected to see sunny skies on Tuesday with a high temperature near 90 and an overnight low temperature around 63, according to the National Weather Service’s latest seven-day forecast.
Wednesday will be sunny with a high near 95 and an overnight low temperature around 63.
Thursday will have a high near 94 and an overnight low around 66 with wind gusts as high as 20 mph according to the weather service.
Friday will be the first day with triple-digit temperatures, with a high near 103 and an overnight low around 73.
Saturday will be sunny and hot with a high of 106 and an overnight low around 72, the weather service said.
Sunday will see a dip in temperatures. The high will be near 97, and the low could drop to around 63 at night.
Monday will be sunny with a high near 86.
Who’s most at risk in Fresno?
Vulnerable individuals include those who are pregnant, newborns, children, older adults and those with chronic illnesses.
These groups are more at risk due to age and conditions that make it difficult to regulate high temperatures.
How to stay safe during hot weather
During the heat wave, people should “stay hydrated, wear lightweight, light-colored clothing (and) avoid outdoor activities during the warmest part of the day,” the mid-afternoon, McCoy said.
“Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors,” the weather service said in its extreme heat watch.
McCoy advised using air conditioning at night as well as during the day.
“Do not leave young children and pets in unattended vehicles,” the weather service warned. “Car interiors will reach lethal temperatures in a matter of minutes.”
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