Currently: 25 °F. Light snow. Mostly cloudy. (Weather station: Janesville / Rock County, USA). See more current weatherPast Weather in Janesville — Graph
Janesville Temperature Yesterday
Maximum temperature yesterday: 16 °F (at 2:45 pm)
Minimum temperature yesterday: -6 °F (at 6:45 am)
Average temperature yesterday: 4 °F
High & Low Weather Summary for the Past Weeks
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 55 °F (Jan 8, 7:45 pm) | 100% (Jan 6, 5:45 pm) | 30.35 "Hg (Jan 6, 5:45 pm) |
| Low | -36 °F (Jan 8, 11:50 pm) | 46% (Jan 15, 1:45 pm) | 29.28 "Hg (Jan 8, 11:30 pm) |
| Average | 23 °F | 80% | 29.90 "Hg |
| * Reported Jan 6 4:45 pm — Jan 21 4:45 pm, Janesville. Weather by CustomWeather, © 2026 | |||
Note: Actual official high and low records may vary slightly from our data, if they occured in-between our weather recording intervals... More about our weather records
Janesville Weather History for the Previous 24 Hours
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| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 4:45 pm Wed, Jan 21 |  | 25 °F | Mostly cloudy. | 10 mph | ↑ | 74% | 29.87 "Hg | 10 mi |
| 3:45 pm | | 25 °F | Partly sunny. | 10 mph | ↑ | 74% | 29.86 "Hg | 10 mi |
| 1:45 pm | | 23 °F | More clouds than sun. | 15 mph | ↑ | 74% | 29.87 "Hg | 10 mi |
| 12:45 pm |  | 21 °F | Overcast. | 15 mph | ↑ | 80% | 29.88 "Hg | 10 mi |
| 11:45 am | | 19 °F | Overcast. | 13 mph | ↑ | 86% | 29.92 "Hg | 10 mi |
| 10:45 am | | 19 °F | Overcast. | 12 mph | ↑ | 86% | 29.92 "Hg | 10 mi |
| 9:45 am | | 19 °F | Mostly cloudy. | 12 mph | ↑ | 86% | 29.92 "Hg | 10 mi |
| 8:45 am | | 19 °F | Overcast. | 8 mph | ↑ | 93% | 29.91 "Hg | 10 mi |
| 7:45 am |  | 19 °F | Light snow. Overcast. | 6 mph | ↑ | 93% | 29.90 "Hg | 6 mi |
| 6:45 am |  | 19 °F | Overcast. | 6 mph | ↑ | 93% | 29.91 "Hg | 10 mi |
| 5:45 am | | 19 °F | Light snow. Mostly cloudy. | 5 mph | ↑ | 93% | 29.92 "Hg | 6 mi |
| 5:15 am | | 21 °F | Overcast. | 3 mph | ↑ | 93% | 29.92 "Hg | 10 mi |
| 4:55 am | | 21 °F | Light snow. Overcast. | No wind | ↑ | 93% | 29.92 "Hg | 3 mi |
| 4:35 am | | 21 °F | Light snow. Overcast. | No wind | ↑ | 93% | 29.93 "Hg | 5 mi |
| 4:15 am | | 21 °F | Overcast. | No wind | ↑ | 93% | 29.93 "Hg | 10 mi |
| 3:55 am | | 21 °F | Overcast. | No wind | ↑ | 93% | 29.95 "Hg | 10 mi |
| 3:15 am | | 21 °F | Light snow. Mostly cloudy. | 3 mph | ↑ | 93% | 29.96 "Hg | 7 mi |
| 8:45 pm Tue, Jan 20 | | 16 °F | Overcast. | 3 mph | ↑ | 73% | 30.14 "Hg | 10 mi |
| 7:45 pm | | 16 °F | Mostly cloudy. | 5 mph | ↑ | 67% | 30.16 "Hg | 10 mi |
| 6:45 pm | | 16 °F | Overcast. | No wind | ↑ | 67% | 30.19 "Hg | 10 mi |
| Weather by CustomWeather, © 2026 | ||||||||