Slowly and steadily, the heat and humidity will be on the increase across the Buffalo-Niagara region as we work toward the 4th of July holiday weekend.
A large area of high pressure is the culprit and will build across the eastern portion of the country as the week unfolds, National Weather Service meteorologist john Rozbicki explains to WBEN.
"It's going to pump increased heat and humidity across our area through midweek, with the heat and humidity peaking sometime in the Wednesday, Thursday timeframe," Rozbicki says."
Heat/humidity will build during the upcoming week, and by midweek the airmass will become quite uncomfortable for many, with the heat and humidity expected to peak Wednesday and Thursday. Now is a good time to make sure you have the means to stay cool during the upcoming week. pic.twitter.com/RlpxdcEm8d
— NWS Buffalo (@NWSBUFFALO) June 29, 2026
Temperatures Monday will climb to the mid to upper 80's, with tolerable humidity, but then things begin to change.
"We're looking for highs pushing up into the upper 80's to low to mid 90's by Wednesday and Thursday, with more oppressive humidity by that time," Rozbicki cautions.
The temps will be warm enough, but with the humidity added in to the mix, the 'feels like' temps will be a challenge to be sure.
"During the peak, probably between the mid 90's to low 100's," Rozbicki warns of the heat values. "Areas closer to Lake Ontario could see heat indices as high as 105."

Rozbicki does say the heat and humidity will ease some later in the week for the holiday weekend, however it will be a fairly slow and steady process.
"For the holiday weekend it's still going to be pretty warm and humid."
Conditions will be mainly dry for much of the work week, following a few possible showers and storms overnight Monday into Tuesday.
A warm front may bring scattered-numerous showers and thunderstorms as it crosses the area Tuesday. A few strong to severe storms cannot be ruled out Tuesday afternoon and evening, mainly from the Finger Lakes into central NY. Damaging winds/large hail would be the main threats. pic.twitter.com/YMPgn9BBuD
— NWS Buffalo (@NWSBUFFALO) June 29, 2026
The weather will turn somewhat unsettled as the weekend approaches.
"We'll start to see increasing chances of showers and storms as we push Friday through the holiday weekend, unfortunately."
"It's going to pump increased heat and humidity across our area through midweek, with the heat and humidity peaking sometime in the Wednesday, Thursday timeframe."
"It's going to pump increased heat and humidity across our area through midweek, with the heat and humidity peaking sometime in the Wednesday, Thursday timeframe."





