Historical weather data, all-time temperature records, and monthly climate averages for Jamestown, NY. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Jamestown is a coin-flip kind of day — there's a 56% chance of precipitation and a real spread in what's possible, from a balmy 82° back in 2010 to a bitter 15° in 1982. On average, expect a high near 53° and a low around 30°, with a 12% chance that whatever falls comes down as snow.
Jamestown earns its reputation for extremes — the thermometer has swung from a scorching 103° in June 1988 all the way down to -31° in February 2015, a jaw-dropping 134-degree range. A single November storm in 2018 buried the city under 17.6 inches of snow in one day, a reminder that Lake Erie doesn't mess around.
Summer is the sweet spot for visiting, with highs peaking around 80-82° in mid-July before tapering off through fall. Winters are cold and gray — January highs average just 31° — and late July is your best bet for rain if you're watching the forecast. Spring and fall offer mild shoulder-season temperatures, though April still keeps you guessing.