Oshkosh

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"Brick" streets of downtown Oshkosh on U.S. Highway 45. It is listed on the National Register of Historic Places as the Main Street Historic District.

Today’s Forecast:

88°F
Clear
Station: KOSH
Observed at: 8:00 pm
Wind: 7 mph | Humidity: 66%

Tonight: A chance of showers and thunderstorms before midnight, then a chance of showers and thunderstorms between midnight and 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers and thunderstorms. Mostly cloudy. Low around 73, with temperatures rising to around 75 overnight. Heat index values as high as 89. Southwest wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.

Today’s Report:

Boating

  22 /100

Not Recommended for boating. High near 73°F. Risk of rain (35%). Breezy winds (13 mph). Thunderstorms forecast or possible.

  • Rain: Marginal weather factor
  • Wind: Marginal weather factor
  • Thunderstorm: Unfavorable weather factor

Camping

  22 /100

Not Recommended for camping. High near 73°F. Risk of rain (35%). Light wind (13 mph). Thunderstorms forecast or possible.

  • Rain: Marginal weather factor
  • Wind: Favorable conditions
  • Thunderstorm: Unfavorable weather factor

🎪 Outdoor Events

  19 /100

Not Recommended for outdoor events. High near 73°F. Risk of rain (35%). Light wind (13 mph). Thunderstorms forecast or possible.

  • Rain: Marginal weather factor
  • Wind: Favorable conditions
  • Thunderstorm: Unfavorable weather factor

About Oshkosh

Oshkosh sits on the Fox River and Lake Winnebago, giving it a strong mix of water recreation, parks, golf, trails, events, and easy weekend activity. It is a place where a calm, warm forecast can quickly turn into a boat day, paddle, waterfront walk, or outdoor event plan.

Wind is one of the bigger factors here. Lake Winnebago can feel rougher than people expect, especially for smaller boats or paddling. On breezier days, golf, parks, trails, restaurants, and indoor attractions can be the better fit.

Make the Most of a Oshkosh Day

Use the best wind and storm window for water activities, then keep your afternoon flexible. Oshkosh offers enough nearby options that you can change course without losing the day.

Weather Tips for Oshkosh

Lake Winnebago can create stronger wind and choppier conditions than inland forecasts suggest. Summer storms can also alter water and event plans quickly.

A few things worth watching before you head out:

  • Lake wind: Wind matters for boats, paddlecraft, shore fishing, and waterfront comfort.
  • Thunderstorms: Check timing before spending a long stretch on the water or at an open event.
  • Heat: Open lakefront and festival areas can feel hotter with little shade.
  • Rain timing: A morning window may be enough for a lakefront walk or shorter paddle.
  • Cooler water: Water temperatures can lag behind air temperatures in spring and early summer.

Plan Around the Conditions

When the lake is calm, prioritize boating, paddling, or waterfront time. If it is windy, shift toward golf, trails, local attractions, food, or a shorter shore-based visit.

7-Day Forecast for Oshkosh:

88°F
Clear
Station: KOSH
Observed at: 8:00 pm
Wind: 7 mph | Humidity: 66%
Wed
86° 72°
42%
Thu
85° 70°
55%
Fri
83° 68°
76%
Ind
79° 65°
55%
Sun 🌧
79° 65°
51%
Mon
81° 65°
11%
Tue 🌧
82° --°
15%

7-Day High Temperature Trend

86° Wed 85° Thu 83° Fri 79° Ind 79° Sun 81° Mon 82° Tue
Forecast data from the National Weather Service  |  Last Updated: June 30, 2026 8:24 pm CDT