Rock County Airport (JVL) 15 Day Weather Forecast, Janesville United States
Current weather conditions and 15 day weather forecast for Rock County Airport in Janesville, United States including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at JVL
| 18 September 2026 Fri 15 ° C ( 58.9°F )  Cloudy |
Feels Like : 13.6 ° C / 56.5°F Humidity : % 92 Pressure : 1024 mb Wind Speed : 13 kmph / 8.1 miles from ENE 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 66 |
15-day weather forecast for Rock County Airport, Janesville, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 18 September 2026 Fri |  Overcast |
14.6 ° C | 19.7 ° C | 16.8 ° C | % 79 | 25.6 km/h | 70% |
| 19 September 2026 Sat |  Light rain shower |
14.1 ° C | 21.3 ° C | 17.5 ° C | % 97 | 25.2 km/h | 94% |
| 20 September 2026 Sun | Light rain shower |
14 ° C | 16.7 ° C | 14.8 ° C | % 95 | 25.2 km/h | 93% |
| 21 September 2026 Mon | Light rain shower |
11.6 ° C | 14.4 ° C | 12.8 ° C | % 87 | 28.4 km/h | 91% |
| 22 September 2026 Tue |  Patchy rain nearby |
10.4 ° C | 12.4 ° C | 11.4 ° C | % 87 | 28.4 km/h | 82% |
| 23 September 2026 Wed | Overcast |
11.4 ° C | 17.3 ° C | 14.5 ° C | % 81 | 14 km/h | 25% |
| 24 September 2026 Thu | Overcast |
12.9 ° C | 20.5 ° C | 16.3 ° C | % 80 | 12.6 km/h | 20% |
| 25 September 2026 Fri |  Sunny |
9.7 ° C | 18.2 ° C | 14.3 ° C | % 69 | 15.5 km/h | 6% |
| 26 September 2026 Sat | Overcast |
9.9 ° C | 18.9 ° C | 13.6 ° C | % 65 | 12.6 km/h | 14% |
| 27 September 2026 Sun | Overcast |
10.7 ° C | 16.6 ° C | 13.4 ° C | % 69 | 20.5 km/h | 14% |
| 28 September 2026 Mon | Overcast |
15.2 ° C | 25.5 ° C | 20.7 ° C | % 66 | 23 km/h | 14% |
| 29 September 2026 Tue | Overcast |
17.6 ° C | 25.2 ° C | 21.5 ° C | % 61 | 18.4 km/h | 37% |
| 30 September 2026 Wed | Overcast |
14.6 ° C | 22.1 ° C | 18.3 ° C | % 76 | 21.2 km/h | 52% |
| 01 October 2026 Thu | Sunny |
7.3 ° C | 13.8 ° C | 10.8 ° C | % 68 | 24.5 km/h | 9% |
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