Omro, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Omro, a city in Winnebago County, Wisconsin.
Tonight
55°F
Showers And Thunderstorms
Rain showers before 11pm, then showers and thunderstorms. Cloudy, with a low around 55. East wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
7-day forecast for Omro
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Showers And Thunderstorms | 8 to 13 mph E | 99% |
| Saturday | 65°F | Showers And Thunderstorms | 13 mph E | 94% |
| Saturday Night | 53°F | Rain Showers | 8 to 12 mph NE | 75% |
| Sunday | 67°F | Chance Rain Showers then Partly Sunny | 14 mph NE | 27% |
| Sunday Night | 49°F | Mostly Cloudy | 13 mph NE | 2% |
| Monday | 62°F | Mostly Cloudy | 13 mph ENE | 5% |
| Monday Night | 46°F | Mostly Cloudy | 8 to 12 mph NE | 8% |
| Tuesday | 61°F | Partly Sunny | 8 to 13 mph NE | 8% |
| Tuesday Night | 46°F | Partly Cloudy | 5 to 8 mph NE | 5% |
| Wednesday | 65°F | Mostly Sunny | 5 to 9 mph NE | 5% |
| Wednesday Night | 48°F | Partly Cloudy | 2 to 6 mph NE | 2% |
| Thursday | 68°F | Mostly Sunny | 2 to 6 mph NNE | 4% |
| Thursday Night | 49°F | Partly Cloudy | 3 mph N | 5% |
| Friday | 71°F | Mostly Sunny | 5 mph N | 2% |
Forecast source: National Weather Service (api.weather.gov) for Omro (44.039, -88.737). Updated through the day.
Growing snapshot for Omro
Last spring frost
May 1
First fall frost
Oct 8
Growing season
158 days
Hardiness zone
5b
More local growing data for Omro: nearby ZIP 54963 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Berlin Wwtp, Wi (9.5 mi from Omro). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.