Oswego, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oswego, a city in Oswego County, New York.
This Afternoon
67°F
Partly Sunny
Partly sunny, with a high near 67. South wind around 7 mph.
7-day forecast for Oswego
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Partly Sunny | 7 mph S | 6% |
| Tonight | 54°F | Mostly Cloudy | 8 mph S | 7% |
| Wednesday | 72°F | Mostly Sunny | 9 mph S | 5% |
| Wednesday Night | 58°F | Light Rain | 9 mph S | 86% |
| Thursday | 68°F | Light Rain | 5 to 10 mph SW | 77% |
| Thursday Night | 48°F | Slight Chance Light Rain then Mostly Cloudy | 3 mph SW | 18% |
| Friday | 62°F | Mostly Cloudy then Slight Chance Light Rain | 6 mph W | 16% |
| Friday Night | 43°F | Chance Light Rain | 6 mph N | 35% |
| Saturday | 54°F | Chance Light Rain | 6 to 10 mph NW | 46% |
| Saturday Night | 38°F | Chance Light Rain | 9 mph W | 46% |
| Sunday | 52°F | Chance Light Rain | 8 to 12 mph W | 31% |
| Sunday Night | 36°F | Chance Light Rain | 9 mph W | 42% |
| Monday | 52°F | Chance Light Rain | 9 to 14 mph NW | 42% |
| Monday Night | 36°F | Chance Light Rain | 9 mph W | 38% |
Forecast source: National Weather Service (api.weather.gov) for Oswego (43.458, -76.504). Updated through the day.
Growing snapshot for Oswego
Last spring frost
Apr 22
First fall frost
Oct 29
Growing season
187 days
Hardiness zone
6a
More local growing data for Oswego: nearby ZIP 13126 weather · frost dates · planting calendar · New York frost dates
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SUNY Oswego
Climate data from the nearest NOAA station, Oswego, Ny (4.1 mi from Oswego). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.