Brookfield, Wisconsin Climate by Month
Brookfield, Wisconsin, United States
Warm summers and freezing winters, with rain spread through the year.
Warm summers and freezing winters, with rain spread through the year: that's Brookfield's climate in short. Afternoon highs range from 29°F (-2°C) in January to 82°F (28°C) in July, and January nights average 13°F (-11°C). About 34 in (857 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(857 mm)
- No clear rainy season
- Humidity
- 75%
- Sunniest: July
Best and worst months in Brookfield
Best for weatherThe most comfortable weather comes in June and September, with highs around 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)
Brookfield weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 29°F(-2°C) | 13°F(-11°C) | 1.5 in(37 mm) | 78% | 1.4 |
| FebFebruary | 33°F(0°C) | 16°F(-9°C) | 1.4 in(36 mm) | 89% | 2.4 |
| MarMarch | 44°F(6°C) | 26°F(-3°C) | 2.0 in(50 mm) | 73% | 3.6 |
| AprApril | 55°F(13°C) | 36°F(2°C) | 3.6 in(92 mm) | 67% | 4.5 |
| MayMay | 67°F(20°C) | 46°F(8°C) | 3.5 in(88 mm) | 70% | 5.2 |
| JunJuneBest | 77°F(25°C) | 56°F(13°C) | 4.1 in(104 mm) | 72% | 5.9 |
| JulJuly | 82°F(28°C) | 61°F(16°C) | 3.5 in(89 mm) | 73% | 6.0 |
| AugAugust | 80°F(26°C) | 60°F(15°C) | 3.8 in(97 mm) | 77% | 5.1 |
| SepSeptemberBest | 73°F(23°C) | 52°F(11°C) | 3.6 in(92 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) | 2.0 in(52 mm) | 78% | 1.6 |
| DecDecember | 33°F(1°C) | 19°F(-7°C) | 1.9 in(47 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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