New Yorkers should prepare for the hottest weather of the year thus far – a stretch of "blistering" heat that will intensify starting Sunday and peak during the coming week with temperatures that could feel like up to 105 degrees, Gov. Kathy Hochul said.

Hochul on Friday updated what is a scorching weather forecast for across New York state that she said is not likely to break until Thursday.

Heat and humidity on Sunday may bring temperatures up to or above 100 degrees, especially in Western New York, the Finger Lakes, Southern Tier and Mid-Hudson regions.

The heat index is expected to climb to 95-110 degrees across all of New York on Monday; 85-110 degrees on Tuesday, when voters go to the polls for primary elections; and dip a bit into the 90s on Wednesday, Hochul said.

“I need you to take this seriously because the No. 1 cause of weather-related death is extreme heat, and that’s what we are facing,” Hochul said.

She encouraged New Yorkers to watch out for signs of heat illnesses, take measures to keep themselves, members of vulnerable populations and pets cool and to cast ballots during early voting, which ends Sunday.

The most common heat-related illnesses are stroke, exhaustion, cramps and rash. You can determine the forecasted level of heat-related health risks in your area by checking the state Health Department’s Heat Risk and Illness Dashboard.

Consecutive days of high heat can strain the state’s electricity system due to increased use of air conditioners, but the New York Independent System Operator (NYISO) said Friday the New York Electric Grid is prepared.

“Based on current conditions, the NYISO expects an adequate supply of electricity will be available to meet demand through the coming period of hot weather,” said Aaron Markham, vice president of operations.