Oconto County weather alerts
There are no active weather alerts for Oconto County, WI right now.
Since 2016 the National Weather Service has issued about 679 alerts that included Oconto County, roughly 68 a year. The most common is the winter weather advisory (137 from 2016 to 2025). The last tornado warning was issued on July 27, 2026. 16 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
No warnings, watches or advisories include Oconto County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Marinette County, Menominee County, Langlade County, Shawano County.
Oconto County alert history
Alert events that included Oconto County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Winter Weather Advisory | 137 | 13 | April 4, 2026 |
| Severe Thunderstorm Warning | 123 | 11 | August 12, 2026 |
| Dense Fog Advisory | 55 | 10 | October 23, 2026 |
| Frost Advisory | 54 | 4 | October 5, 2026 |
| Cold Weather Advisory | 47 | 3 | January 26, 2026 |
| Winter Storm Warning | 43 | 3 | April 2, 2026 |
| Severe Thunderstorm Watch | 35 | 7 | August 7, 2026 |
| Winter Storm Watch | 35 | 3 | April 2, 2026 |
| Wind Advisory | 24 | 0 | December 20, 2025 |
| Flood Warning | 23 | 5 | April 15, 2026 |
| Flood Advisory | 21 | 5 | July 2, 2026 |
| Freeze Warning | 18 | 1 | October 17, 2026 |
| Tornado Warning | 13 | 2 | July 27, 2026 |
| Flood Watch | 11 | 5 | July 2, 2026 |
| Heat Advisory | 10 | 3 | July 13, 2026 |
| Tornado Watch | 10 | 2 | July 20, 2026 |
| Freeze Watch | 4 | 1 | October 17, 2026 |
| Snow Squall Warning | 3 | 0 | December 4, 2024 |
| Fire Weather Watch | 2 | 0 | May 15, 2023 |
| Blizzard Warning | 2 | 1 | March 15, 2026 |
| Flash Flood Warning | 2 | 1 | April 14, 2026 |
| Extreme Cold Warning | 2 | 1 | January 23, 2026 |
| Red Flag Warning | 1 | 0 | May 23, 2016 |
| Extreme Heat Warning | 1 | 1 | June 29, 2026 |
| High Wind Watch | 1 | 0 | December 16, 2021 |
| High Wind Warning | 1 | 0 | December 16, 2021 |
| Ice Storm Warning | 1 | 1 | April 4, 2026 |
| Extreme Cold Watch | 0 | 1 | January 23, 2026 |
Tornado history in Oconto County
16 tornadoes have been recorded in Oconto County since 1950, injuring 4 people. That ranks 50 of 72 counties in Wisconsin. The most recent was on July 23, 2025 (rated EF0).
Strongest tornadoes in Oconto County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| September 28, 1971 | F3 | Marathon County | 78.4 mi | 200 yd | 0 | 0 |
| June 7, 2007 | EF3 | Shawano County | 40.1 mi | 1,320 yd | 0 | 3 |
| June 26, 1969 | F3 | Outagamie County | 15.3 mi | 100 yd | 0 | 1 |
| June 16, 1979 | F2 | Oconto County | 15.2 mi | 100 yd | 0 | 0 |
| June 4, 1966 | F2 | Oconto County | 5.4 mi | 50 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| July 23, 2025 | EF0 | Oconto County | 2.4 mi | 65 yd | 0 | 0 |
| July 23, 2025 | EF1 | Oconto County | 2.3 mi | 65 yd | 0 | 0 |
| June 25, 2024 | EF1 | Menominee County | 9 mi | 83 yd | 0 | 0 |
| July 6, 2015 | EF1 | Oconto County | 2.3 mi | 50 yd | 0 | 0 |
| July 9, 2013 | EF0 | Oconto County | 1.6 mi | 100 yd | 0 | 0 |
About Oconto County
- Population: 40,037 (2024 estimate)
- State: Wisconsin
- NOAA Weather Radio SAME code: 055083 (how to use it)