Oshkosh, WI Weather & Growing Conditions
Today
83°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 3pm and 4pm, then a chance of showers and thunderstorms. Partly sunny. High near 83, with temperatures falling to around 81 in the afternoon. Heat index values as high as 86. Southwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 10 to 14 mph SW | 37% |
| Tonight | 62°F | Chance Showers And Thunderstorms | 3 to 9 mph W | 59% |
| Wednesday | 78°F | Chance Showers And Thunderstorms then Partly Sunny | 5 mph WNW | 49% |
| Wednesday Night | 56°F | Mostly Cloudy | 1 to 5 mph W | 2% |
| Thursday | 81°F | Mostly Sunny | 1 to 5 mph S | 0% |
| Thursday Night | 59°F | Mostly Clear | 5 mph S | 0% |
| Friday | 83°F | Sunny | 3 to 12 mph SSW | 2% |
| Friday Night | 63°F | Mostly Clear | 7 to 12 mph SSW | 11% |
| Saturday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 7 to 12 mph SW | 15% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 6 to 10 mph SSW | 36% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 7 to 12 mph WSW | 36% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 5 to 10 mph WSW | 49% |
| Monday | 82°F | Chance Rain Showers | 5 to 8 mph SSW | 35% |
| Monday Night | 64°F | Chance Showers And Thunderstorms | 7 mph NNE | 41% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Oshkosh, WI
Last spring frost
Apr 24
First fall frost
Oct 20
Growing season
178 days
Hardiness zone
5b
Explore more for Oshkosh, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Oshkosh, Wi (3.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.