New Berlin, WI Weather & Growing Conditions
This Afternoon
68°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy, with a high near 68. East wind around 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Chance Rain Showers | 10 mph E | 31% |
| Tonight | 59°F | Chance Rain Showers then Chance Showers And Thunderstorms | 10 to 15 mph E | 94% |
| Saturday | 71°F | Showers And Thunderstorms | 10 to 15 mph SE | 94% |
| Saturday Night | 59°F | Showers And Thunderstorms Likely | 5 to 10 mph NE | 74% |
| Sunday | 65°F | Chance Rain Showers | 15 mph NE | 50% |
| Sunday Night | 54°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 27% |
| Monday | 61°F | Slight Chance Rain Showers | 15 mph E | 16% |
| Monday Night | 50°F | Slight Chance Rain Showers | 10 to 15 mph NE | 16% |
| Tuesday | 60°F | Slight Chance Rain Showers | 10 to 15 mph NE | 15% |
| Tuesday Night | 50°F | Mostly Cloudy | 5 to 10 mph NE | 12% |
| Wednesday | 62°F | Partly Sunny | 5 to 10 mph NE | 11% |
| Wednesday Night | 50°F | Mostly Cloudy | 5 to 10 mph NE | 6% |
| Thursday | 65°F | Partly Sunny | 5 mph NE | 3% |
| Thursday Night | 51°F | Partly Cloudy | 0 to 5 mph N | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for New Berlin, WI
Last spring frost
May 1
First fall frost
Oct 13
Growing season
162 days
Hardiness zone
5b
Explore more for New Berlin, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Waukesha Wwtp, Wi (5.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.