New Berlin, WI Weather & Growing Conditions
Overnight
58°F
Light Rain
Rain. Cloudy, with a low around 58. South wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Light Rain | 10 to 15 mph S | 91% |
| Wednesday | 62°F | Chance Light Rain | 10 to 15 mph S | 37% |
| Wednesday Night | 45°F | Cloudy then Slight Chance Light Rain | 15 mph SW | 22% |
| Thursday | 55°F | Chance Light Rain | 10 to 15 mph W | 51% |
| Thursday Night | 38°F | Chance Light Rain then Cloudy | 10 to 15 mph N | 40% |
| Friday | 48°F | Mostly Cloudy | 10 to 15 mph N | 10% |
| Friday Night | 32°F | Partly Cloudy | 5 to 10 mph N | 1% |
| Saturday | 49°F | Sunny | 5 mph NW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 5 mph W | 2% |
| Sunday | 54°F | Sunny | 5 to 10 mph W | 7% |
| Sunday Night | 35°F | Mostly Clear | 5 to 10 mph W | 1% |
| Monday | 58°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 41°F | Partly Cloudy | 5 to 10 mph W | 1% |
| Tuesday | 59°F | Sunny | 5 to 10 mph NW | 2% |
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 Nov 4, 2026.