September weather forecast and climate
Ithaca, NY

A stream of water flowing downstream from the Taughannock Waterfall in Ithaka, New York
A stream of water flowing downstream from the Taughannock Waterfall in Ithaka, New York

What is the temperature in September in Ithaca?

The average high-temperature, in September, in Ithaca, New York, is 71.8°F (22.1°C), while the average low-temperature is 50.2°F (10.1°C).

How much does it rain in Ithaca in September?

In September, in Ithaca, the rain falls for 11 days. Throughout September, 3.4" (86.6mm) of precipitation is accumulated.

Does it snow in Ithaca in September?

In Ithaca, New York, in September, it doesn't snow. In October, it regularly snows.
Average temperature in September - Ithaca, NY
  • Average high temperature in September: 71.8°F

The warmest month (with the highest average high temperature) is July (80.9°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in September: 50.1°F

The month with the highest average low temperature is July (58.4°F).
The coldest month (with the lowest average low temperature) is February (15.2°F).

Average rainfall in September - Ithaca, NY
  • Average rainfall in September: 3.4"

Wettest months (with the highest rainfall) are June and July (3.6").
The driest month (with the lowest rainfall) is February (1.9").

Average rainfall days in September - Ithaca, NY
  • Average rainfall days in September: 11 days

Months with the highest number of rainy days are January and December (15 days).
Months with the lowest number of rainy days are August and September (11 days).

Average snowfall in September - Ithaca, NY
  • Average snowfall in September: 0"

The month with the highest snowfall is January (15.5").
Months with the lowest snowfall are June, July, August and September (0").

Average daylight in September / Average sunshine in September - Ithaca, NY
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.1h).

  • Average sunshine in September: 7h

The month with most sunshine is July (Average sunshine: 10h).
Months with least sunshine are November and December (Average sunshine: 3).

Average UV index in September - Ithaca, NY
  • Average UV index in September: 6

Months with the highest UV index are June, July and August (UV index 8).
Months with the lowest UV index are January and December (UV index 1).

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