Oshkosh, Appleton, and Fond du Lac, WI

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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:

☀
63°F
High: 65° | Low: 52°
Current Temperature
Clear
Station: KOSH
Observed at: 6:35 pm CDT on 9/26/26
Wind: 7 mph | Humidity: 68%

Tonight:Partly cloudy, with a low around 52. Southeast wind 1 to 7 mph.
Sunday:Mostly sunny, with a high near 68. East wind around 3 mph.
Sunday Night:Partly cloudy, with a low around 57. North northwest wind around 2 mph.

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Today’s Report:

⛵ Boating

Excellent
  94 /100

Excellent for boating. High near 68°F. Low rain risk (2%).

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100
Ideal conditions for boating. Comfortable temperature (high near 70°F), light wind, and clear forecast.

⛺ Camping

Excellent
  100 /100

Excellent for camping. High near 68°F. Low rain risk (2%).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100
Ideal conditions for camping. Comfortable temperature (high near 70°F), light wind, and clear forecast.

🎪 Outdoor Events / Activities

Excellent
  100 /100

Excellent for outdoor events / activities. High near 68°F. Low rain risk (2%).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100
Ideal conditions for outdoor events / activities. Comfortable temperature (high near 70°F), light wind, and clear forecast.

🐟 Fishing

Excellent
  100 /100

Excellent for fishing. High near 68°F. Low rain risk (2%).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100
Ideal conditions for fishing. Comfortable temperature (high near 70°F), light wind, and clear forecast.

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.

This forecast covers the Mile of Music Festival and other outdoor events in the area.

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:

☀
63°F
High: 65° | Low: 52°
Current Temperature
Clear
Station: KOSH
Observed at: 6:35 pm CDT on 9/26/26
Wind: 7 mph | Humidity: 68%
Sun ⛅
68° 57°
1%
Mon ☀
70° 56°
0%
Tue ⛅
70° 61°
5%
Wed 🌧
68° 60°
64%
Thu 🌧
68° 56°
48%
Fri 🌧
64° 54°
26%
Sat 🌧
63° --°
18%

7-Day High Temperature Trend

68° Sun 70° Mon 70° Tue 68° Wed 68° Thu 64° Fri 63° Sat

7-Day Low Temperature Trend

57° Sun 56° Mon 61° Tue 60° Wed 56° Thu 54° Fri 50° Sat

📊 7-Day Outdoor Outlook

Good Fair Poor 100 Sun 100 Mon 100 Tue 94 Wed 95 Thu 100 Fri 100 Sat
Forecast data from the National Weather Service  |  Last Updated: September 26, 2026 8:40 pm CDT