New Berlin Climate by Month
New Berlin, Wisconsin, United States
Warm summers and freezing winters, with rain spread through the year.
New Berlin has warm summers and freezing winters, with rain spread through the year. July is the warmest month, with highs around 82°F (28°C); January is the coolest at 29°F (-2°C), and nights dip to 13°F (-11°C). About 34 in (872 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 82°F(28°C)
- Average high, July
- Coldest nights
- 13°F(-11°C)
- Average low, January
- Rain per year
- 34 in(872 mm)
- No clear rainy season
- Humidity
- 75%
- Sunniest: July
Best and worst months in New Berlin
Best for weatherJune and September are the best time for weather in New Berlin: highs near 75°F (24°C) and about 3.9 in (98 mm) of rain a month.
Least pleasantJanuary and February are the least pleasant; January is the coldest, with highs of only 29°F (-2°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in September.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
New Berlin weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 29°F(-2°C) | 13°F(-11°C) | 1.5 in(39 mm) | 78% | 1.4 |
| FebFebruary | 33°F(0°C) | 17°F(-9°C) | 1.5 in(38 mm) | 89% | 2.4 |
| MarMarch | 43°F(6°C) | 26°F(-3°C) | 2.0 in(52 mm) | 73% | 3.5 |
| AprApril | 55°F(13°C) | 36°F(2°C) | 3.7 in(95 mm) | 67% | 4.5 |
| MayMay | 67°F(20°C) | 46°F(8°C) | 3.5 in(90 mm) | 69% | 5.2 |
| JunJuneBest | 77°F(25°C) | 56°F(13°C) | 4.2 in(106 mm) | 73% | 5.8 |
| JulJuly | 82°F(28°C) | 61°F(16°C) | 3.6 in(91 mm) | 73% | 6.0 |
| AugAugust | 79°F(26°C) | 60°F(15°C) | 3.8 in(97 mm) | 77% | 5.1 |
| SepSeptemberBest | 73°F(23°C) | 52°F(11°C) | 3.5 in(90 mm) | 72% | 4.2 |
| OctOctober | 60°F(16°C) | 41°F(5°C) | 2.9 in(73 mm) | 72% | 2.6 |
| NovNovember | 46°F(8°C) | 30°F(-1°C) | 2.1 in(53 mm) | 78% | 1.6 |
| DecDecember | 33°F(1°C) | 19°F(-7°C) | 1.9 in(48 mm) | 83% | 1.3 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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