Oshkosh, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oshkosh, a city in Winnebago County, Wisconsin.
Today
64°F
Rain Showers
Rain showers before 1pm, then showers and thunderstorms. Cloudy, with a high near 64. East wind around 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Oshkosh
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Rain Showers | 13 mph E | 81% |
| Tonight | 56°F | Showers And Thunderstorms Likely | 12 mph NE | 58% |
| Sunday | 67°F | Partly Sunny | 12 to 15 mph NE | 8% |
| Sunday Night | 50°F | Mostly Cloudy | 10 to 16 mph NE | 1% |
| Monday | 62°F | Mostly Cloudy | 10 to 14 mph NE | 2% |
| Monday Night | 48°F | Mostly Cloudy | 12 mph NE | 2% |
| Tuesday | 62°F | Mostly Sunny | 9 to 13 mph ENE | 1% |
| Tuesday Night | 48°F | Mostly Clear | 7 to 10 mph NE | 1% |
| Wednesday | 65°F | Sunny | 7 to 12 mph NE | 1% |
| Wednesday Night | 50°F | Mostly Clear | 3 to 8 mph NE | 1% |
| Thursday | 67°F | Mostly Sunny | 5 to 8 mph NE | 2% |
| Thursday Night | 50°F | Partly Cloudy | 2 to 6 mph NE | 1% |
| Friday | 70°F | Mostly Sunny | 3 to 7 mph NE | 3% |
| Friday Night | 51°F | Partly Cloudy | 2 to 6 mph E | 3% |
Forecast source: National Weather Service (api.weather.gov) for Oshkosh (44.023, -88.562). Updated through the day.
Growing snapshot for Oshkosh
Last spring frost
Apr 24
First fall frost
Oct 20
Growing season
178 days
Hardiness zone
5b
More local growing data for Oshkosh: nearby ZIP 54901 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Oshkosh, Wi (3.1 mi from Oshkosh). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.