Janesville

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Downtown Janesville looking south on Main Street.

Today’s Forecast:

77°F
Current Temperature
Mostly Cloudy
Station: KJVL
Observed at: 2:45 pm
Wind: 7 mph | Humidity: 41%

This Afternoon:Partly sunny, with a high near 81. South wind around 10 mph.
Tonight:Mostly clear, with a low around 59. South wind 0 to 10 mph.
Saturday:Mostly sunny, with a high near 84. Southwest wind 5 to 10 mph.

Today’s Report:

🚲 Biking

Excellent
  95 /100

Excellent for biking. High near 80°F. Light wind (10 mph).

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 85/100

Golf

Excellent
  100 /100

Excellent for golf. High near 80°F. Light wind (10 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100

🥾 Hiking

Excellent
  90 /100

Excellent for hiking. High near 80°F. Light wind (10 mph).

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Good 82/100

About Janesville

Janesville is an easy place to make an outdoor day out of parks, riverfront paths, golf, biking, trails, and family-friendly stops. It is less about one giant destination and more about having several good choices close together.

Comfortable weather is ideal for parks, golf, and a ride or walk along the river. On hotter days, an earlier start helps. When rain or storms arrive, the city gives you enough nearby alternatives to stay flexible.

Make the Most of a Janesville Day

Use the first dry, comfortable window for the activity you care about most. Then add lower-commitment park time, food, shopping, or indoor stops around it.

Weather Tips for Janesville

Summer heat, afternoon storms, and occasional wind are the main things to watch. River and open park areas can feel more exposed than neighborhoods.

A few things worth watching before you head out:

  • Thunderstorms: Check timing before golf, trails, or open park plans.
  • Heat: Start earlier for biking, golf, and longer walks in summer.
  • Wind: Open river and park areas can feel breezier than expected.
  • Rain timing: A later shower may still leave a useful outdoor window.
  • Trail conditions: Natural trails can become muddy after heavy rain.

Plan Around the Conditions

Get outside during the best weather window, then leave room to shift to food, shopping, indoor attractions, or a shorter park stop if conditions change.

7-Day Forecast for Janesville:

77°F
Current Temperature
Mostly Cloudy
Station: KJVL
Observed at: 2:45 pm
Wind: 7 mph | Humidity: 41%
Fri
81° 59°
0%
Sat
84° 68°
13%
Sun
91° 73°
12%
Mon
91° 69°
37%
Tue
89° 64°
5%
Wed
88° 64°
7%
Thu
88° 65°
15%

7-Day High Temperature Trend

81° Fri 84° Sat 91° Sun 91° Mon 89° Tue 88° Wed 88° Thu

7-Day Low Temperature Trend

59° Fri 68° Sat 73° Sun 69° Mon 64° Tue 64° Wed 65° Thu

📊 7-Day Outdoor Outlook

Good Fair Poor 20 Fri 20 Sat 20 Sun 12 Mon 20 Tue 20 Wed 12 Thu
Forecast data from the National Weather Service  |  Last Updated: July 24, 2026 3:48 pm CDT