Historical weather data, all-time temperature records, and monthly climate averages for Cortland, NY. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Cortland is a coin flip: there's a 54% chance of precipitation, and snow is still possible 12% of the time. Temperatures typically land around 49° for the high and 30° at night — but the date has swung from a brutal -4° low in 2016 all the way to 64° just two years ago in 2023.
Cortland earns its reputation as a place that means business in all seasons. Summers can punch up to 99° (July 2011), while winters have bottomed out at a punishing -29° (February 2015) — a 128-degree spread that tells you everything about central New York's range.
July is peak season here, with average highs around 80° during the warmest week of the year (July 16–22). January and February are brutal, with highs averaging in the low 30s. If you're trying to dodge the rain, avoid early-to-mid September — that's when Cortland averages its wettest week, nearly an inch of precipitation.