Historical weather data, all-time temperature records, and monthly climate averages for Franklin Square, NY. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Franklin Square sits squarely in the transitional zone — 77 years of data puts the average high at 55° and the low at 40°, though the date has swung wildly from a balmy 73° in 1988 to a bitter 24° in 1995. There's a 29% chance of rain today, but you can essentially forget about snow — just a 1% shot.
Franklin Square doesn't mess around at the extremes: temperatures have ranged from a scorching 104° on July 3, 1966 to a brutal -2° on January 21, 1985 — a 106-degree spread over the station's history. The wettest single day on record dumped 8.05 inches during the remnants of a 2023 storm, while the January 2016 blizzard buried the area under 30.3 inches of snow.
Summer is the main event here, with highs peaking around 85° the week of July 16–22 and the wettest stretch of the year arriving right on its heels in late July. Winters are cold but not punishing — the coolest week of the year averages a high of just 38° in mid-January. If you're planning a visit, May through June and September through October offer the best balance of warmth and drier conditions.