Historical weather data, all-time temperature records, and monthly climate averages for Lansdowne, PA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Lansdowne runs mild but unpredictable — 85 years of records show an average high of 59° and low of 40°, but the date has swung anywhere from a balmy 81° (1942) to a brutal 26° (1965). There's about a 1-in-3 chance of rain today, though snow is nearly out of the picture at just 1%.
Lansdowne's weather has real teeth on both ends: the thermometer has hit 104° in July and cratered to -7° in January, a swing of 111 degrees. A single storm dumped 8.02 inches of rain on July 28, 2013, and the Blizzard of '96 buried the area under 27.6 inches of snow in one day.
Summers are genuinely hot here — the warmest week of the year (July 16–22) averages a high of 88°, and July is also the wettest stretch of the calendar. If you're chasing the cool end, mid-January bottoms out around 39° for a high, making it the region's quietest, coldest chapter.