Oshkosh, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oshkosh, a city in Winnebago County, Wisconsin.
This Afternoon
68°F
Rain Showers
Rain showers before 5pm, then patchy fog and scattered rain showers. Cloudy. High near 68, with temperatures falling to around 66 in the afternoon. South wind around 15 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Oshkosh
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Rain Showers | 15 mph S | 89% |
| Tonight | 58°F | Rain Showers | 13 mph SSE | 92% |
| Wednesday | 64°F | Rain Showers | 12 to 15 mph S | 87% |
| Wednesday Night | 46°F | Rain Showers Likely | 14 mph SW | 63% |
| Thursday | 54°F | Rain Showers | 9 to 13 mph WNW | 87% |
| Thursday Night | 38°F | Chance Rain Showers | 13 to 16 mph N | 42% |
| Friday | 48°F | Slight Chance Rain Showers then Partly Sunny | 10 to 16 mph N | 18% |
| Friday Night | 33°F | Partly Cloudy | 3 to 7 mph NNW | 3% |
| Saturday | 51°F | Mostly Sunny | 6 mph WNW | 1% |
| Saturday Night | 35°F | Partly Cloudy | 5 to 8 mph WSW | 10% |
| Sunday | 57°F | Slight Chance Rain Showers | 8 to 12 mph W | 16% |
| Sunday Night | 36°F | Mostly Clear | 6 to 9 mph W | 4% |
| Monday | 58°F | Mostly Sunny | 7 to 13 mph SW | 2% |
| Monday Night | 40°F | Mostly Clear | 12 mph W | 0% |
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 Nov 3, 2026.