Christine Ferreira

Friday will be partly cloudy and muggy with highs in the low-to-mid 80s, while Saturday is expected to be mostly sunny and more comfortable. Scattered showers and thunderstorms will return Sunday from morning through early afternoon and again Sunday night into Monday, with possible heavy rain but no current severe-weather outlook. Lower humidity is expected Tuesday before humidity and rain chances rise later in the week.

Overnight showers have ended, with clearing skies and warm, seasonably humid conditions expected Thursday. A weak chance of an isolated thunderstorm exists as a cold front passes, while wildfire smoke remains aloft. Humidity will decrease Friday and Saturday, with Saturday expected to bring the most pleasant conditions. Humidity and shower and thunderstorm chances will increase Sunday into Monday before easing Tuesday, with another period of wetter and more humid weather possible later in the week.

Wednesday will be warm and humid with partly to mostly sunny skies, hazy conditions from elevated wildfire smoke, and highs in the mid-80s. A few showers and thunderstorms may develop overnight and again Thursday as a cold front moves through. Humidity will decrease Friday and Saturday before returning Sunday, when scattered thunderstorms are possible.

The Susquehanna Valley faces scattered showers and thunderstorms Tuesday, with the greatest chance of widespread storms overnight as a complex moves in from Ohio. Severe weather risk is very low, but isolated damaging wind gusts, heavy rain and possible flash flooding remain concerns. Warm, humid conditions continue through Thursday before humidity drops Friday and Saturday; additional storms are possible Sunday ahead of more pleasant weather early the following week.

Hot, muggy conditions with temperatures near 90 degrees are expected across central Pennsylvania. Afternoon and evening storms may bring damaging wind gusts, heavy tropical downpours, frequent lightning and isolated flash flooding, with the greatest risk from 4 to 8 p.m. Friday in Lancaster, York, Adams, Lebanon and Dauphin counties. Storm chances continue through Saturday, followed by generally drier conditions Sunday and Monday. A cold front arriving Tuesday into Wednesday should lower temperatures and humidity, bringing more comfortable weather by the following weekend.

Sultry heat and humidity will persist across the Susquehanna Valley, with temperatures near 90 degrees and heat indices in the mid-to-upper 90s, reaching around 100 in Lebanon and Lancaster counties under a Heat Advisory. Thunderstorms are expected from Thursday through Saturday, with damaging wind gusts, heavy rain and isolated flash flooding as the main risks. Drier conditions are forecast for Sunday and Monday, while a cold front arriving Tuesday into Wednesday should bring cooler, less humid weather.

A warm, humid stretch is expected, with scattered showers and thunderstorms bringing the primary risk of brief heavy rain. Thursday and Friday will be warmer, with afternoon and evening storms and a marginal risk of severe weather Thursday due to potentially damaging wind gusts. Similar conditions continue Saturday, followed by drier weather Sunday and Monday. A cold front arriving Tuesday into Wednesday should bring additional showers and storms, then lower temperatures and more typical humidity levels.

Mostly sunny and comfortable conditions are expected Tuesday, with highs in the mid-80s and low humidity. Humidity will increase Wednesday, bringing more clouds, showers and thunderstorms, followed by warm and humid conditions through Saturday with a risk of heavy rainfall. Sunday and Monday should be drier, while another cold front may bring showers and storms Tuesday into Wednesday and slightly lower temperatures and humidity.

High pressure will bring mostly sunny skies and seasonable mid-80s temperatures on Friday, with mostly clear conditions overnight. Saturday will be cloudier, humid and largely dry, while showers and thunderstorms become possible Sunday afternoon through Monday as a cold front moves east. Cooler conditions near 84 degrees are expected Monday, followed by mid-80s Tuesday and a hotter, more humid stretch beginning Wednesday, with highs near 90 degrees by Friday through Sunday.

A Flood Watch remains in effect until 2 a.m. Wednesday for Cumberland, Adams, York, Lancaster, Lebanon and Dauphin counties in Pennsylvania. Showers and thunderstorms are expected Tuesday, with heavy rain, frequent lightning, damaging wind gusts, large hail and a small tornado risk; flash flooding is also possible. Storms should end by late evening, followed by a few showers Wednesday. The rest of the week will be humid with seasonable temperatures, mostly dry conditions Friday and a chance of isolated or scattered storms over the first weekend of August.

A clear, cool and unusually dry Friday will lead to a sunny, pleasant weekend, with highs in the low to mid-80s and only a slight chance of a shower Sunday. Humidity and storm chances will increase Monday and Tuesday, though severe weather is not currently expected. Conditions should become somewhat less humid late in the week before warm, sticky weather returns toward the end of July.

Cool, dry air and high pressure bring sunshine with highs in the low 80s through Saturday. Humidity remains low until Sunday, when moisture increases and scattered thunderstorms become possible. Warm, humid conditions with additional storms are expected Monday and Tuesday before slightly lower humidity returns midweek.

A Code Red air quality alert is in effect across south‑central Pennsylvania as near‑surface smoke from wildfires in Ontario and northern Minnesota drives pollution levels into an unhealthy range. Officials urge residents to limit outdoor activity due to risks such as eye irritation, coughing and breathing difficulties, especially for those with respiratory conditions. Conditions are expected to remain poor into Friday, which is under a Code Orange alert that may be upgraded if smoke concentrations stay high. Hot and humid weather continues, with thunderstorms possible Saturday that could help improve air quality.

Oppressive heat and humidity continue across south-central Pennsylvania, with feels-like temperatures topping 100 degrees and a heat advisory in effect. Wednesday marks the peak of the heat, approaching near-record temperatures in Harrisburg. Conditions will ease slightly Thursday as a weak cold front lowers humidity, while incoming Canadian wildfire smoke may reduce temperatures and sunlight and potentially affect air quality. Residents are urged to take safety precautions during the heat wave.

Wildfires in southern Ontario and northern Minnesota are sending smoke into Pennsylvania, creating hazy skies and temporarily lowering temperatures. Most smoke is remaining high in the atmosphere, limiting impacts on surface air quality, though denser plumes expected late Wednesday into Thursday could lead to increased particulate pollution and stronger haze. Forecasts call for continued heat, with temperatures near 100 degrees and a heat advisory in effect, followed by a chance of thunderstorms heading into the weekend.

South-central Pennsylvania faces a multi‑day heat wave with temperatures in the mid‑ to upper‑90s and heat index values exceeding 100 degrees. Heat advisories are in effect Tuesday and expand to the entire Susquehanna Valley on Wednesday, which is expected to reach near‑record highs of 99 degrees. Conditions remain hot through Thursday before easing slightly by the weekend as humidity drops. Residents are advised to stay hydrated, limit outdoor activity and take precautions to protect vulnerable individuals.

Storms are expected Friday afternoon and evening across south‑central Pennsylvania, bringing potential damaging wind gusts and brief heavy rain. The period of greatest storm activity is between 1 p.m. and 8 p.m., with a marginal risk for severe weather and no threat of hail or tornadoes. Conditions should improve over the weekend, with Saturday bringing isolated storms and Sunday turning less humid. Rising temperatures next week may lead to a possible heat wave.

A flood watch was issued for multiple south-central Pennsylvania counties due to expected storms capable of producing torrential downpours, localized flash flooding, and isolated damaging wind gusts. Showers may appear in the morning, with the highest risk for thunderstorms and heavy rain occurring between noon and 8 p.m. Warm, humid conditions will persist, and storms may rapidly cause flooding in vulnerable areas before tapering off overnight with possible fog. The WGAL Storm Team designated Thursday as an Impact Day due to likely disruptions.

Scattered thunderstorms are expected Thursday in south-central Pennsylvania, with the highest risk between mid-afternoon and late evening. Forecasters warn of isolated damaging wind gusts and brief heavy rain, though the risk of flash flooding, hail, and tornadoes is low. Several counties fall under a marginal risk for severe weather. Additional showers and storms are possible Friday as a cold front moves through, while next week is expected to bring warmer temperatures with highs in the low 90s and limited rain chances.

Extreme heat is expected across the Susquehanna Valley through Saturday, with an Extreme Heat Warning in effect and heat index values reaching 105 to 110 degrees. Several counties face extended warnings or heat advisories as temperatures hover near or above 100 degrees, accompanied by high humidity. Brief thunderstorms with potential damaging winds are possible late Friday and on Independence Day. Conditions begin easing Sunday before returning to more typical summer temperatures next week. The region remains unusually dry, following one of the driest Junes on record and a significant rainfall deficit for the year.

An extreme heat warning is in effect for the Susquehanna Valley from Wednesday through Friday, with temperatures near 100 degrees and heat index values reaching 105 to 110. High humidity, minimal overnight cooling, and record-challenging temperatures are expected. Independence Day will also be very hot, with a heat advisory and the potential for isolated storms capable of heavy rain and damaging wind gusts. Scattered storms become more likely Sunday as the heat dome weakens, bringing temperatures back to the upper 80s early next week. Dry conditions remain a concern after one of the driest Junes on record.

A code orange air quality alert was issued for several south-central Pennsylvania counties due to elevated ozone levels posing risks to sensitive groups. Additional extreme heat warnings and advisories were announced for the coming days, with temperatures expected to reach dangerous levels and potential storms later in the week. Residents are advised to limit strenuous outdoor activity and monitor conditions as prolonged heat and poor air quality continue.

Temperatures in the Susquehanna Valley are forecast to reach dangerous levels, prompting an Extreme Heat Warning from Wednesday through Friday followed by a Heat Advisory on Saturday. Heat index values are expected to peak between 105 and 110 degrees with little overnight relief as lows remain in the 70s. The hottest days are projected for Thursday and Friday, with the potential to reach or break record highs. Independence Day will remain hot and humid with a risk of scattered storms. Conditions gradually ease by Sunday as temperatures fall back toward seasonal averages, though rainfall is expected to remain limited despite ongoing dry conditions.

A prolonged period of dangerous heat is forecast for south-central Pennsylvania, prompting an extreme heat watch from Wednesday afternoon through Friday evening. Temperatures are expected to reach the upper 90s to near 100 degrees, with humidity pushing heat index values as high as 110. Overnight lows in the upper 70s may increase the risk of heat-related illness. The heat arrives during unusually dry conditions, with June rainfall in Harrisburg at one of the lowest levels on record. Conditions may ease slightly by the Independence Day weekend but will remain hot and humid, with potential thunderstorms on Saturday and Sunday.

An extreme heat watch is in effect from Wednesday through Friday in the Susquehanna Valley, where heat index values are expected to reach 105–110 degrees. Fog and humid conditions begin the week before temperatures rise into the 90s starting Tuesday. The most dangerous heat will occur midweek, with nighttime temperatures offering little relief. Slightly lower temperatures are expected for Independence Day, with continued chances of isolated thunderstorms, while next week brings near‑average temperatures and scattered storms amid ongoing dry conditions.