No
you don't need a jacket based on the weather in Janesville, WI, USA 1 second ago
79°F26°C & Clear
Wind is 7 mph12 km/h from the W, gusting to 14 mph23 km/h
| September 20 | ||||
| 1pm | 80°F26°C | 8 mph12 km/h W | Clear | |
| 2pm | 82°F28°C | 8 mph14 km/h W | Clear | |
| 3pm | 83°F28°C | 9 mph15 km/h NW | Clear | |
| 4pm | 84°F29°C | 9 mph15 km/h W | Clear | |
| 5pm | 84°F29°C | 9 mph15 km/h W | Clear | |
| 6pm | 82°F28°C | 8 mph13 km/h W | Clear | |
| 7pm | 79°F26°C | 6 mph10 km/h W | Clear | |
| 8pm | 75°F24°C | 5 mph8 km/h W | Clear | |
| 9pm | 71°F22°C | 5 mph8 km/h W | Clear | |
| 10pm | 69°F20°C | 5 mph8 km/h NW | Clear | |
| 11pm | 67°F19°C | 4 mph7 km/h NW | Clear | |
| September 21 | ||||
| 12am | 65°F18°C | 4 mph6 km/h NW | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 20 | 63°F17°C | 84°F29°C | 7 mph12 km/h from W | Clear | Mostly Clear |
| September 21 | 57°F14°C | 86°F30°C | 7 mph11 km/h from S | Mostly Clear | Cloudy |
| September 22 | 59°F15°C | 70°F21°C | 9 mph15 km/h from NW | Rain | Mostly Cloudy |
| September 23 | 51°F11°C | 68°F20°C | 8 mph12 km/h from NE | Mostly Cloudy | Mostly Cloudy |
| September 24 | 55°F13°C | 67°F19°C | 8 mph12 km/h from N | Cloudy | Mostly Cloudy |
| September 25 | 53°F12°C | 70°F21°C | 6 mph10 km/h from NE | Mostly Cloudy | Partly Cloudy |
| September 26 | 53°F12°C | 72°F22°C | 8 mph13 km/h from E | Partly Cloudy | Partly Cloudy |
Yes
Low of 57°F14°C, High of 86°F30°CWind: 7 mph11 km/h
Precipitation: 3% rain