Last frost date in Oswego, New York

April 22

Average last frost in spring. In an early year (1 in 10) it's over by April 9; in a late year (1 in 10) it comes after May 7.

October 29

Average first frost in fall. 1 year in 10 it comes by October 9.

Source: NOAA U.S. Climate Normals 1991–2020, station Oswego (USC00306314), 1.8 miles from Oswego, elevation 324 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.

What to plant now

Frost dates for Oswego, New York
Early yearAverageLate year
Last frost in springApr 9Apr 22May 7
First frost in fallOct 9Oct 29Nov 11

Frost-free days in an average year: 187

Light frost, frost and hard freeze in Oswego
Chance in a yearAverage last in springAverage first in fall
Light frost (36°F)Every yearMay 4Oct 13
Frost (32°F)Every yearApr 22Oct 29
Hard freeze (28°F)Every yearApr 10Nov 10

Nights at 32°F or colder in an average year: 119

What to plant now in Oswego

Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5. How we match the table.

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