The weather in Ithaca isn't always good... check it before coming!

We try to hold public observing at the Fuertes Observatory every Friday night when the weather at Cornell permits. Even if the weather is prohibitive for stargazing, we will still open up for tours of the observatory and its historic telescopes. This said, we generally advise visitors to come on clear nights so they can have a fantastic stargazing experience.

The best place to look to see if it's clear outside is up! If you can't see any stars where you are, there is good chance that we can't either. We also have some resources below to help you plan your visit!

National Weather Service forecast for
The National Weather Service forecast for the coordinates of the Fuertes Observatory, including temperatures, precipitation, and cloud cover.
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Nominatim geocoding from OpenStreetMap and contributors. Weather data from National Weather Service. Preliminary air quality data from the AirNow API, sourced from AirNow partners. Moon phase and event data from the U.S. Naval Observatory's Astronomical Applications Department.
Clear Sky Chart for Ithaca, NY:
The Clear Dark Sky/CMC forecast for Ithaca.
Sky conditions key:
100% (cloudy/poor) ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ 0% (clear/excellent) 
Other Clear Sky Charts:
Cherry Springs State Park cloud cover - Cherry Springs State Park, PA
Custer Institute cloud cover - Custer Institute in Southold, NY
Wakely Mountain cloud cover - Wakely Mountain in Adirondack Park, NY
Bryce Canyon cloud cover - Bryce Canyon National Park, UT

Be sure to check the sunset times listed to the right. Observing typically won't begin until an hour or so after sunset, and doesn't get spectacular until an hour and a half after sunset!

Unfortunately, a bright moon makes it harder to observe deep-sky objects. The best time to observe planets, galaxies, and nebulae is a new moon; however, brighter objects like planets are still visible during even a full moon.

But if you want to observe the moon instead, the best time is first or third quarter. Shadows help to accentuate the craters!