New Holstein, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Holstein, a city in Calumet County, Wisconsin.
Today
84°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of rain showers between 3pm and 4pm, then a chance of showers and thunderstorms. Mostly sunny. High near 84, with temperatures falling to around 82 in the afternoon. Heat index values as high as 87. Southwest wind 8 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for New Holstein
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny then Chance Showers And Thunderstorms | 8 to 15 mph SW | 38% |
| Tonight | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph W | 79% |
| Wednesday | 76°F | Chance Rain Showers | 6 mph SW | 25% |
| Wednesday Night | 59°F | Chance Showers And Thunderstorms | 1 to 5 mph S | 26% |
| Thursday | 79°F | Slight Chance Rain Showers then Mostly Sunny | 2 to 6 mph W | 7% |
| Thursday Night | 60°F | Mostly Clear | 5 mph SSW | 5% |
| Friday | 83°F | Sunny | 5 to 12 mph SW | 1% |
| Friday Night | 64°F | Mostly Clear | 9 mph SSW | 7% |
| Saturday | 84°F | Sunny then Slight Chance Showers And Thunderstorms | 9 to 13 mph SW | 15% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 7 to 10 mph SW | 34% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 8 to 12 mph WSW | 34% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 5 to 9 mph WSW | 49% |
| Monday | 81°F | Chance Rain Showers | 5 to 8 mph SW | 33% |
| Monday Night | 64°F | Chance Showers And Thunderstorms | 5 to 8 mph NNE | 41% |
Forecast source: National Weather Service (api.weather.gov) for New Holstein (43.949, -88.095). Updated through the day.
Growing snapshot for New Holstein
Last spring frost
May 1
First fall frost
Oct 14
Growing season
162 days
Hardiness zone
5b
More local growing data for New Holstein: nearby ZIP 53061 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Chilton, Wi (6.2 mi from New Holstein). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.