Wisconsin · NWS GRB office

Oshkosh, WI weather

It is 54°F and clear at Wittman Regional Airport as of Oct 28, 1:15 AM CDT. Overnight: Partly Cloudy, low near 50°F, 4% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 12:56 AM CDT.

Updated Oct 28, 1:21 AM CDT (snapshot)

Current conditions

Temperature

54°F

Clear

Wind

S 8 mph

Humidity 88% · dew point 50°F

Pressure · visibility

30.14 inHg

Visibility 7 mi

Observed at Wittman Regional Airport (KOSH), Oct 28, 1:15 AM CDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Oshkosh forecast zone right now.

Around the NWS GRB forecast area

No active alerts in zones served by the GRB office near Oshkosh.

From the alert snapshot of Oct 28, 2026, 2:15 AM EDT. No alerts are active anywhere in Wisconsin.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Oshkosh (local time)
TimeTempForecastPrecip. chanceWind
Wed 1 AM55°FPartly Cloudy4%S 8 mph
Wed 2 AM54°FPartly Cloudy1%S 7 mph
Wed 3 AM53°FPartly Cloudy1%SSW 7 mph
Wed 4 AM52°FPartly Cloudy2%SSW 7 mph
Wed 5 AM51°FPartly Cloudy2%SSW 6 mph
Wed 6 AM52°FMostly Sunny2%SSW 6 mph
Wed 7 AM51°FSunny1%SSW 7 mph
Wed 8 AM52°FSunny1%SSW 7 mph
Wed 9 AM56°FSunny1%SSW 7 mph
Wed 10 AM60°FSunny1%SSW 8 mph
Wed 11 AM63°FSunny1%SSW 8 mph
Wed 12 PM67°FSunny1%SSW 9 mph
Wed 1 PM70°FSunny0%S 10 mph
Wed 2 PM71°FSunny0%S 10 mph
Wed 3 PM72°FSunny1%S 12 mph
Wed 4 PM72°FSunny0%S 12 mph
Wed 5 PM71°FSunny2%S 10 mph
Wed 6 PM69°FPartly Cloudy2%S 12 mph
Wed 7 PM66°FPartly Cloudy6%S 12 mph
Wed 8 PM65°FPartly Cloudy6%S 14 mph
Wed 9 PM64°FPartly Cloudy8%S 15 mph
Wed 10 PM64°FSlight Chance Showers And Thunderstorms24%SSW 16 mph
Wed 11 PM63°FChance Showers And Thunderstorms35%SSW 16 mph
Thu 12 AM61°FChance Showers And Thunderstorms52%SSW 16 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Oshkosh can differ.

7-day forecast

Overnight

Low 50°F

Partly cloudy, with a low around 50. South southwest wind around 8 mph.

Wednesday

High 72°F·Low 55°F

Sunny, with a high near 72. South southwest wind 6 to 12 mph, with gusts as high as 20 mph.

Wednesday Night: A slight chance of showers and thunderstorms between 10pm and 11pm, then showers and thunderstorms likely between 11pm and 5am. Mostly cloudy. Low around 55, with temperatures rising to around 58 overnight. South southwest wind 12 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.

Thursday

High 64°F·Low 40°F

Mostly sunny, with a high near 64. West northwest wind around 13 mph, with gusts as high as 21 mph.

Thursday Night: Patchy fog after 5am. Mostly clear, with a low around 40. Northwest wind 3 to 9 mph.

Friday

High 60°F·Low 43°F

Areas of fog before 8am. Mostly sunny, with a high near 60.

Friday Night: Mostly cloudy, with a low around 43.

Saturday

High 61°F·Low 47°F

A slight chance of rain showers after 7am. Partly sunny, with a high near 61. Chance of precipitation is 20%.

Saturday Night: A slight chance of rain showers. Mostly cloudy, with a low around 47. Chance of precipitation is 20%.

Sunday

High 64°F·Low 49°F

A slight chance of rain showers before noon. Mostly cloudy, with a high near 64. Chance of precipitation is 20%.

Sunday Night: A slight chance of rain showers after midnight. Mostly cloudy, with a low around 49. Chance of precipitation is 20%.

Monday

High 64°F·Low 49°F

A slight chance of rain showers after noon. Partly sunny, with a high near 64. Chance of precipitation is 20%.

Monday Night: A chance of rain showers. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.

Tuesday

High 61°F

A chance of rain showers. Mostly cloudy, with a high near 61. Chance of precipitation is 50%.

Nearby cities

Larger cities in the area

Other cities in Winnebago County

See every city we cover in Wisconsin, or check all active alerts.

About this forecast

Forecast office
Oshkosh is served by the National Weather Service GRB forecast office, forecast zone WIZ048, county zone WIC139.
Location used
The Census Bureau's internal point for Oshkosh (44.0232, -88.5623), in Winnebago County. Population: 67,242 (2024 estimate), number 9 of the 42 Wisconsin cities on this site.
Radar
Nearest NWS radar: KGRB. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/44.0232,-88.5623 (forecast issued Oct 28, 12:56 AM CDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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