Historical weather data, all-time temperature records, and monthly climate averages for Plattsburgh, NY. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Plattsburgh sits squarely in that restless shoulder season — average highs around 48° but with a 55-degree swing in recorded history, from a brutal 10° low in 1964 to a balmy 65° high in 1968. Snow is still possible, though at just 7% it's more of a nuisance risk than a real threat.
Plattsburgh earns its stripes as a true four-season city: 70 years of data capture a scorching 101° in June 2025 on one end and a bone-cracking -29° in January 1968 on the other — a range of 130 degrees. A single January day in 1961 dropped 17.7 inches of snow, which tells you everything you need to know about Adirondack-adjacent winters.
Summer is short and sweet, peaking late July with average highs around 80°, while January and February barely crack the mid-20s — plan outdoor trips between May and September. The wettest stretch comes in mid-May, so early summer travelers should pack accordingly.