Ithaca, NY Weather Forecast
Tompkins County, New York
Seven-day outlook
37–71°F across the weekThe week runs between 38° and 71°, with today the warmest day of it. There is no real trend across it: one day looks much like the next. Tomorrow is the wettest day, peaking near 25%. 5 of the 7 days stay dry.
Forecasts come from the National Weather Service's own computer models, and current conditions from the nearest reporting weather station. Both are served through the weather API. A forecast is guidance, not a warning, and anything the Weather Service has actually issued is on the live map.
The written summaries on this page are generated from the forecast data above, not by a meteorologist. Each sentence is a reading of the same numbers you can see, and no forecaster has reviewed them.
About the Ithaca forecast
Ithaca sits at 42.4439°N, 76.5031°W in Tompkins County, New York. The forecast above is drawn for that point from the National Weather Service's own computer models: a seven-day outlook, and a finer-grained one covering the next eighteen hours where it reaches, and the radar and alert panels show what the Weather Service has out over the area right now.
- County
- Tompkins County
- Coordinates
- 42.4439°N, 76.5031°W
- Population
- 32,724 · 2023 estimate
- Land area
- 5.389 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Ithaca, and the forecast is for that location, not for every address inside the city limits, and a large city can have real weather differences from one side to the other.
How well can the network see Ithaca?
The nearest Doppler radar is KBGM (Binghamton, NY), 31 miles to the ESE. A WSR-88D's lowest routine scan sits half a degree above horizontal, and the earth curves away beneath it, so by the time that beam reaches Ithaca its center is about 1,900 ft above ground. That is about as close as radar coverage gets in the United States: the lowest scan is still near the ground when it reaches Ithaca, so low-level rotation and the leading edge of a gust front show up on it. Ithaca is closer to its radar than 68% of US cities.
The closest instrument actually measuring the air is KITH · Ithaca/Tompkins Rgnl on the ASOS/AWOS network, 4.1 miles away. Close enough that its readings are, for practical purposes, the conditions in town.
Beam height is the standard 4/3-earth approximation for the 0.5° scan and assumes normal refraction; it is where the center of the beam is, not its edges, and unusual temperature profiles bend it. Radar siting from the NWS WSR-88D network, station positions from the New York observing network as of this build.
Forecasts near Ithaca
- Cayuga Heights, NY2 mi
- Lansing, NY3 mi
- Enfield, NY6 mi
- Ulysses, NY8 mi
- Danby, NY8 mi
- Newfield, NY9 mi
- Caroline, NY10 mi
- Hector, NY14 mi
Elsewhere in New York
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