Weather
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Northeast
New York City carries Saturday's heat directly into Sunday with highs again near 90°F and overnight lows that offered little relief, leaving the atmosphere humid and loaded heading into the afternoon. Newark and Jersey City track the same muggy setup, while Philadelphia pushes into the low 90s under a mix of clouds and sun. A weak shortwave moving across northern Pennsylvania and Upstate New York raises the storm threat for the region through the afternoon and early evening, with isolated to scattered thunderstorms possible — particularly across interior sections away from the coast. Boston holds in the mid-80s with some onshore flow moderating the feel along the waterfront.
- NYC — 90°F, storm chance afternoon
- Newark — 90°F, muggy
- Philadelphia — 91°F, storm threat later
- Boston — 84°F, onshore flow
- Hartford — 87°F, storm possible
- Providence — 85°F, humid
Mid-Atlantic & East Coast
Washington climbs again toward 91°F today with the same shortwave energy that threatens the Northeast arriving across the central Appalachians and Mid-Atlantic by mid-afternoon. Dewpoints in the low-to-mid 70s combined with daytime heating will support convective development along the I-95 corridor, where damaging wind gusts are the primary threat ahead of any organized storm clusters. Baltimore and Richmond track the same pattern — warm, humid, and unsettled into the evening hours. Virginia Beach holds slightly cooler with a sea breeze offering some protection along the immediate coast.
- Washington — 91°F, afternoon storms
- Baltimore — 90°F, storm threat
- Philadelphia — 91°F, convective risk
- Richmond — 89°F, unsettled
- Virginia Beach — 87°F, sea breeze
- Wilmington DE — 89°F, humid
Florida
Miami holds at 90°F under mostly cloudy skies today, with the inland sea-breeze boundary remaining active through the afternoon. Fort Lauderdale and West Palm Beach track the same warm, humid pattern, with isolated storms possible but coverage not as widespread as earlier in the week. Orlando and Tampa push to 91–92°F as the daily sea-breeze convection cycle continues — afternoon cells are the rule rather than the exception this time of year across the peninsula. The tropical Atlantic remains under watch, with the National Hurricane Center monitoring disturbances, but no immediate threat to Florida is expected this weekend.
- Miami — 90°F, mostly cloudy
- Fort Lauderdale — 90°F, humid
- West Palm Beach — 90°F, isolated storms
- Orlando — 92°F, storm chance
- Tampa — 91°F, sea breeze storms
- Naples — 90°F, humid
Southeast
New Orleans and Baton Rouge sit at 91°F today as Gulf moisture continues to funnel northward, keeping storm chances elevated through the afternoon across Louisiana and Mississippi. Mobile and Pensacola remain unsettled with a daily storm pattern that shows no sign of breaking this week. Atlanta holds in the upper 80s as scattered afternoon convection develops along the ridgeline, while Charlotte and Raleigh sit in the mid-to-upper 80s under the early edge of a warm and dry lean across the Carolinas — drier than average conditions are favored for August across this corridor per NOAA's monthly outlook.
- New Orleans — 91°F, storm chance
- Baton Rouge — 91°F, humid
- Mobile — 90°F, storms
- Pensacola — 89°F, unsettled
- Atlanta — 88°F, scattered storms
- Charlotte — 86°F, warm and drying
Midwest
Chicago reaches 81°F Sunday — a touch warmer than Saturday — under a mix of clouds and sunshine, with rainfall odds remaining low at around 15% as the frontal boundary stays well to the north. Minneapolis trends toward increasing clouds as the next system organizes ahead of next week's active pattern. Des Moines and Omaha hold in the mid-to-upper 80s, warm and humid, as heat builds ahead of a more pronounced storm setup Monday into Tuesday across the Upper Mississippi Valley. Fargo and Sioux Falls remain under wildfire smoke haze drifting in from the Pacific Northwest, where more than 2 million acres have already burned in Oregon alone this season.
- Chicago — 81°F, mostly sunny
- Minneapolis — 80°F, increasing clouds
- Des Moines — 86°F, warm
- Omaha — 87°F, humid
- Fargo — 82°F, smoke haze
- Sioux Falls — 83°F, breezy
Texas & Oklahoma
Dallas holds at 99°F today with a storm chance remaining in the 30–35% range, where an isolated afternoon cell or two could bring brief relief before the pattern resets into another hot Monday. Fort Worth and Arlington track the same numbers, while Austin and San Antonio remain locked in the low 100s under dry and relentless conditions. Houston reaches 97°F with Gulf humidity pushing heat index values well above 105°F. Oklahoma City and Tulsa stay in the upper 90s, where dangerous heat index readings are the story of the weekend — AccuWeather's monthly forecast for Dallas shows daily highs ranging from the upper 90s to 103°F throughout August, making this a sustained heat event rather than a brief spike.
- Dallas — 99°F, isolated storm chance
- Fort Worth — 99°F, hot
- Austin — 101°F, dry
- San Antonio — 100°F, humid
- Houston — 97°F, muggy
- Oklahoma City — 98°F, hot
- Tulsa — 97°F, hot
Mountain West
Denver approaches 100°F again Sunday under the expanding western heat dome, with fire danger elevated across Wyoming and the high plains as low relative humidity and gusty afternoon winds persist. Cheyenne and Casper push back toward or above triple digits, extending a stretch of extreme heat that has already set records across the region. Billings and Rapid City track the upper 90s as the ridge of high pressure asserts itself from Arizona northward. The WPC's short-range forecast notes that dangerous heat will build under this ridge, with widespread Major to locally Extreme HeatRisk across the Desert Southwest and Intermountain West through Sunday.
- Denver — 99°F, mostly sunny
- Colorado Springs — 96°F, dry
- Cheyenne — 100°F, fire danger
- Casper — 101°F, critical fire weather
- Billings — 98°F, hot
- Rapid City — 97°F, hot
Desert Southwest
Las Vegas reaches 114°F Sunday — matching Saturday's airport reading and pushing close to the all-time record of 116°F — as the Extreme Heat Warning remains in effect through Sunday evening. Phoenix sits at 111–114°F under a relentlessly clear sky with overnight lows that will only fall into the low 90s, offering virtually no recovery window. Yuma and Lake Havasu track among the hottest readings in the nation today. Clark County's cooling stations remain open across Southern Nevada through at least Tuesday. The NWS warns that heat exposure can progress from heat cramps and heat exhaustion to heat stroke without intervention.
- Las Vegas — 114°F, extreme heat warning
- Phoenix — 112°F, dangerous
- Yuma — 113°F, very hot
- Tucson — 107°F, dry
- Palm Springs — 114°F, extreme
- Lake Havasu — 115°F, severe heat
California
The Central Valley bakes again Sunday with Fresno and Bakersfield in the 104–106°F range and Redding approaching 108°F under ongoing heat advisory conditions. Sacramento holds near 103°F as the ridge of high pressure keeps inland temperatures elevated well above normal. San Francisco remains locked under its marine layer at a cool 63°F, a difference of more than 40 degrees from the interior over less than 60 miles. Wildfire smoke from dozens of active blazes in Oregon and Washington continues to affect air quality across the northern half of the state, with AccuWeather warning that temperature inversions are trapping smoke close to the ground and reducing visibility across the region.
- Sacramento — 103°F, hot
- Fresno — 106°F, dry
- Bakersfield — 105°F, hot
- Redding — 108°F, extreme heat
- San Francisco — 63°F, marine layer
- Los Angeles (inland) — 94°F, hot
Pacific Northwest
Portland tracks near 88°F Sunday — still hot and dry with no rain in the forecast — as fire weather conditions remain dangerous across Oregon and eastern Washington. Seattle holds in the low-to-mid 80s, with smoke from multiple large fires now reaching Western Washington after the region largely avoided smoke for most of the summer. Spokane continues to deal with severe smoke and poor air quality following last week's destructive wildfire that burned through residential neighborhoods in the city's north side. Boise sits near 92°F with smoke and Red Flag Warnings in effect across the surrounding region.
- Portland — 88°F, dry
- Seattle — 82°F, smoke
- Spokane — 84°F, heavy smoke
- Boise — 92°F, smoke / Red Flag
- Eugene — 86°F, warm
- Bend — 88°F, dry
Sources: NOAA, NWS, Weather Prediction Center, Storm Prediction Center, National Hurricane Center, AccuWeather, Local Forecast Offices