Fairfield Weather Forecast
- 63
- 83
Rain Showers Likely
- 60
- 80
Chance Rain Showers
- 60
- 81
Partly Sunny
- 62
- 84
Partly Sunny
- 66
- 85
Chance Rain Showers
- 65
- 85
Chance Thunderstorms
Today 4 Jul Walworth
Warm and humid. Partly sunny. Chance of Showers until late afternoon. Chance of Thunderstorms in the late morning and early Afternoon, then Showers and Thunderstorms likely late in the afternoon. Highs in the mid 80s. South Winds up to 10 Mph. Chance of precipitation 60 percent.
Tonight 4 Jul Walworth
Mostly cloudy with a 50 percent chance of light Showers and Thunderstorms. Patchy fog early in the morning. Near steady temperature in the upper 60s. West Winds up to 5 Mph.
Fairfield Temperature Statistics
July Temperature
Janesville-Rock County (13 miles)
Lowest 1 July, 2026
75.2 °FAverage July
81.3 °FHighest 1 July, 2026
91.4 °F
Climate (2021–2026)
Janesville-Rock County (13 miles)
Average Low 2021–2026
40.3 °FAverage 2021–2026
48.7 °FAverage High 2021–2026
60.3 °F