Weather
Central Pennsylvania Weather: Rain, Gusts and Frost Oct 16-18
State College, PA – A dramatic change in temperatures will bring widespread frost to the State College area this weekend as a period of unusually warm weather gives way to much colder nighttime condit
By Audrey Sloan · 2026-10-15T08:40:01.566Z
State College, PA – A dramatic change in temperatures will bring widespread frost to the State College area this weekend as a period of unusually warm weather gives way to much colder nighttime conditions. After temperatures climb to approximately 76 degrees Friday, October 16, the National Weather Service expects readings to fall to 31 degrees Saturday night, with widespread frost developing after 1 a.m. Sunday. The transition could affect sensitive vegetation, weekend outdoor activities and residents across Centre County as colder air settles into central Pennsylvania.
According to the National Weather Service forecast for State College, rain and thunderstorms are likely Friday before a substantial cooldown arrives. The precipitation probability reaches 80%, with south winds of 8 to 16 mph and gusts as high as 28 mph. Showers and thunderstorms are expected to become more likely during the afternoon before precipitation chances diminish Friday evening.
Temperatures Fall Sharply Ahead of Sunday Frost Friday's expected high of 76 degrees will provide a brief period of warmth before conditions change considerably. By Friday night, temperatures are forecast to fall to approximately 40 degrees as northwest winds increase to 11 to 14 mph, with gusts reaching 30 mph. The forecast calls for a 20% chance of showers during the evening and early overnight hours before drier conditions take hold.
Saturday, October 17, will feel dramatically different, with mostly sunny skies but afternoon temperatures reaching only 50 degrees. Northwest winds of 11 to 15 mph could gust as high as 28 mph, adding a noticeable chill for residents attending outdoor events or traveling throughout the State College area.
The greatest concern arrives Saturday night when temperatures are expected to reach 31 degrees, falling below the freezing mark. Widespread frost is forecast to develop mainly after 1 a.m. Sunday, creating conditions that could damage unprotected, temperature sensitive plants.
Widespread Frost Expected Sunday Morning Sunday, October 18, begins with widespread frost, mainly before 9 a.m., according to the National Weather Service. Temperatures should recover to approximately 57 degrees by afternoon under sunny skies, but the chilly start could create problems for gardens, flowers and other sensitive outdoor vegetation.
Residents with potted plants or late season gardens should consider moving vulnerable plants indoors or providing suitable protection before Saturday night. The forecast supports freezing temperatures and widespread frost, although the supplied information does not establish whether an official freeze warning or frost advisory has been issued.
Travelers using Interstate 99, US Route 322 and other major roads around State College should also prepare for changing weather conditions. Friday's showers and thunderstorms could create wet pavement and reduced visibility, while gusty winds may be noticeable on exposed roadways. No specific road closures or traffic disruptions are identified in the supplied forecast.
Frost Concerns Continue Into Monday The cold weather will not end Sunday morning. Another round of frost is possible late Sunday night into Monday, October 19, when temperatures are expected to fall to approximately 34 degrees. The National Weather Service specifically forecasts areas of frost after 3 a.m. Monday, followed by widespread frost mainly before 8 a.m.
Despite the chilly mornings, afternoon temperatures will gradually improve. Monday's high should reach 61 degrees, followed by approximately 64 degrees Tuesday and 63 degrees Wednesday.
The combination of Friday's warmth, weekend cooling and repeated frost conditions makes this a particularly important forecast for residents with outdoor plants and weekend activities.
Are you preparing to protect your plants before central Pennsylvania's coldest temperatures arrive this weekend?
Five Day Weather Outlook Thursday 10/15: Partly sunny conditions are expected with a high near 64 degrees and light northerly winds. Rain and possible thunderstorms develop Thursday night, with an 80% precipitation chance and temperatures falling to approximately 54 degrees.
Friday 10/16: Rain and thunderstorms are likely, with an 80% precipitation chance and temperatures reaching 76 degrees. South winds could gust to 28 mph before northwest winds arrive Friday night, bringing temperatures down to 40 degrees.
Saturday 10/17: Mostly sunny skies return, but temperatures reach only 50 degrees, with northwest wind gusts near 28 mph. Clear conditions Saturday night allow temperatures to fall to 31 degrees, with widespread frost developing after 1 a.m.
Sunday 10/18: Widespread frost is expected before 9 a.m., followed by sunny skies and an afternoon high near 57 degrees. Mostly clear conditions return Sunday night, with temperatures dropping to 34 degrees and additional frost possible after 3 a.m.
Monday 10/19: Widespread frost is expected mainly before 8 a.m., followed by sunshine and a high near 61 degrees. Monday night turns partly cloudy, with temperatures falling to approximately 38 degrees as conditions gradually moderate.
Extended Outlook: October 20 21 Tuesday, October 20, is expected to be mostly sunny, with a high near 64 degrees and a nighttime low around 39 degrees. Wednesday, October 21, should remain sunny, with afternoon temperatures near 63 degrees.