Chambersburg will see cooler weather Thursday before temperatures climb into the 80s Friday. Showers and possible thunderstorms will move through ahead of a sharp cooldown for the weekend.
Today: Thursday, October 15
Expect partly sunny skies with a chance of afternoon showers and a high near 63°F. Showers become more likely tonight, with a low around 57°F.
Tomorrow: Friday, October 16
Mostly cloudy and warmer, with a high near 84°F. Showers and a thunderstorm are possible after 2 p.m., with a 60% chance of rain. Winds could gust to about 26 mph. Showers may continue Friday evening before temperatures fall to around 45°F overnight.
7-Day Forecast
| Day | Forecast | High | Overnight low |
|---|---|---|---|
| Thursday, Oct. 15 | Partly sunny; afternoon showers possible, rain more likely at night | 63°F | 57°F |
| Friday, Oct. 16 | Warm and breezy; showers and a thunderstorm possible | 84°F | 45°F |
| Saturday, Oct. 17 | Mostly sunny and much cooler | 54°F | 34°F |
| Sunday, Oct. 18 | Morning frost, then sunny | 58°F | 36°F |
| Monday, Oct. 19 | Sunny | 62°F | 41°F |
| Tuesday, Oct. 20 | Mostly sunny | 65°F | 44°F |
| Wednesday, Oct. 21 | Sunny | 66°F | Not yet available |
Temperatures are for Chambersburg. Forecast details may change.
Weather Alerts and Concerns
The National Weather Service’s Thursday morning update listed no active watches, warnings or advisories for its central Pennsylvania forecast area. However, forecasters noted an increased risk of severe thunderstorms Friday afternoon and early evening. Monitor updated forecasts before outdoor activities.
Gusty winds Friday could move unsecured outdoor decorations. Frost is forecast late Saturday night into Sunday morning, so plan to protect sensitive outdoor plants.
