Londonderry, PA Weather Forecast
Dauphin County, Pennsylvania
Live radar, warnings and storm tracking for Londonderry, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Londonderry
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Londonderry, PA at a glance
Londonderry is home to about 4,884 people in Dauphin County, across 23 square miles. It ranks 552nd by population of 970 places in Pennsylvania with a forecast here. The nearest neighbour with its own forecast is Middletown, 2 miles away.
- County
- Dauphin County
- Population
- 4,884 2023 est.
- Land area
- 23 sq mi
- People per sq mi
- 215
- Forecast point
- 40.1839°N, 76.6971°W
How well can the network see Londonderry?
The nearest Doppler radar is KCCX (State College, PA), to the NW. Its lowest scan passes about 7,600 ft above Londonderry. The beam is above the lowest few thousand feet here, so a warning for Londonderry can come before anything looks dramatic on radar.
The closest weather station is KMDT (Harrisburg Intl). Close enough that its readings are the conditions in town.
Forecasts near Londonderry
- Middletown, PA2 mi
- Lower Swatara, PA4 mi
- Highspire, PA5 mi
- West Donegal, PA5 mi
- Elizabethtown, PA6 mi
- Conoy, PA6 mi
- Hummelstown, PA6 mi
- Derry, PA6 mi
Elsewhere in Pennsylvania
PhiladelphiaPittsburghAllentownReadingErieUpper DarbyAll Pennsylvania forecasts →