Historical weather data, all-time temperature records, and monthly climate averages for Jefferson Valley-Yorktown, NY. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Jefferson Valley-Yorktown runs the full gamut — this date has seen a balmy 82° (1950) and a brutal 17° (1964) in the same calendar slot. On average, expect a high near 58° and a low around 33°, classic early spring whiplash territory. Snow is possible but unlikely, with just a 3% chance.
Jefferson Valley-Yorktown plays hardball at the extremes — 100° in June of 1950 on one end, -25° in January of 1961 on the other, a 125-degree swing in the all-time books. The wettest single day on record dumped 8.1 inches in July 2023, and a 1961 February storm buried the area under 17 inches of snow.
Summers are warm and occasionally wet, with highs peaking around 84° in mid-July and the heaviest rainfall clustering in that same window. Winters are cold but not brutal by Northeast standards, with January and February highs hovering in the mid-to-upper 30s. Spring and fall offer the most comfortable stretches, with October averaging a pleasant 66°.