Oswego, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oswego, a city in Oswego County, New York.
Today
79°F
Sunny
Sunny, with a high near 79. West wind around 7 mph.
7-day forecast for Oswego
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Sunny | 7 mph W | 0% |
| Tonight | 63°F | Mostly Clear | 2 to 6 mph E | 0% |
| Wednesday | 86°F | Sunny | 7 mph S | 0% |
| Wednesday Night | 70°F | Mostly Cloudy then Slight Chance Rain Showers | 6 mph SE | 23% |
| Thursday | 84°F | Showers And Thunderstorms Likely | 6 mph SW | 61% |
| Thursday Night | 69°F | Showers And Thunderstorms Likely | 3 mph SW | 61% |
| Friday | 81°F | Chance Rain Showers then Chance Showers And Thunderstorms | 6 mph W | 41% |
| Friday Night | 67°F | Chance Showers And Thunderstorms | 3 mph SW | 47% |
| Saturday | 82°F | Chance Showers And Thunderstorms | 6 mph SW | 47% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 1 to 5 mph SW | 27% |
| Sunday | 84°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 8 mph SW | 21% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 to 8 mph SW | 46% |
| Monday | 81°F | Chance Rain Showers | 8 to 13 mph W | 46% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 6 to 9 mph W | 52% |
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 Aug 4, 2026.