Historical weather data, all-time temperature records, and monthly climate averages for Landenberg, PA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Landenberg typically delivers a mild early-spring day, with highs averaging 61° and lows around 38°. The date has swung wildly over 84 years of records — from a balmy 80° back in 1942 to a bitter 23° low in 1995. There's about a 1-in-3 chance of rain, though snow is nearly off the table at just 3%.
Landenberg has seen some serious weather extremes over its 132-year record. The thermometer has hit as high as 105° (July 1983) and plunged to -12° (February 1899), a 117-degree spread. A single day in September 1999 dumped 8.67 inches of rain, and a February 1979 snowstorm buried the area under 15 inches.
Summer is the main event here — highs peak around 87-88° in mid-July, and the wettest stretch of the year falls in that same July window with over an inch of rain expected weekly. Winters are cold but not brutal, with January and February highs only scraping into the low 40s. If you're planning a visit, May and September offer the sweet spot: warm temps in the 75-79° range with lower precip.