Omro, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Omro, a city in Winnebago County, Wisconsin.
Today
83°F
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 1pm and 2pm, then a chance of showers and thunderstorms between 2pm and 4pm, then a chance of showers and thunderstorms. Partly sunny. High near 83, with temperatures falling to around 80 in the afternoon. Heat index values as high as 86. Southwest wind 8 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Omro
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 8 to 13 mph SW | 32% |
| Tonight | 62°F | Chance Showers And Thunderstorms | 2 to 8 mph WNW | 55% |
| Wednesday | 78°F | Chance Rain Showers | 5 mph WSW | 19% |
| Wednesday Night | 57°F | Slight Chance Rain Showers | 3 mph SW | 14% |
| Thursday | 81°F | Patchy Fog then Sunny | 1 to 5 mph SSW | 4% |
| Thursday Night | 59°F | Mostly Clear | 5 mph SSW | 1% |
| Friday | 84°F | Sunny | 3 to 12 mph SW | 2% |
| Friday Night | 63°F | Mostly Clear | 7 to 10 mph SSW | 12% |
| Saturday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 10 mph SW | 15% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 9 mph SSW | 37% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 6 to 10 mph WSW | 37% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 5 to 9 mph WSW | 49% |
| Monday | 81°F | Chance Rain Showers | 3 to 8 mph SSW | 36% |
| Monday Night | 64°F | Chance Showers And Thunderstorms | 7 mph NNE | 41% |
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 Aug 4, 2026.