Winona Climate by Month
Winona, Minnesota, United States
Warm summers and freezing winters, with rain spread through the year.
Winona has warm summers and freezing winters, with rain spread through the year. July is the warmest month, with highs around 83°F (28°C); January is the coolest at 26°F (-3°C), and nights dip to 8°F (-13°C). About 32 in (813 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 83°F(28°C)
- Average high, July
- Coldest nights
- 8°F(-13°C)
- Average low, January
- Rain per year
- 32 in(813 mm)
- No clear rainy season
- Humidity
- 74%
- Sunniest: July
Best and worst months in Winona
Best for weatherSeptember is the best time for weather in Winona: highs near 74°F (23°C) and about 3.5 in (88 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 26°F (-3°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)
Winona weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 26°F(-3°C) | 8°F(-13°C) | 0.9 in(23 mm) | 92% | 1.5 |
| FebFebruary | 31°F(0°C) | 12°F(-11°C) | 0.9 in(24 mm) | 76% | 2.4 |
| MarMarch | 44°F(7°C) | 24°F(-4°C) | 1.7 in(44 mm) | 75% | 3.6 |
| AprApril | 58°F(14°C) | 37°F(3°C) | 3.0 in(75 mm) | 63% | 4.5 |
| MayMay | 70°F(21°C) | 47°F(9°C) | 4.4 in(112 mm) | 65% | 5.1 |
| JunJune | 80°F(26°C) | 58°F(14°C) | 4.6 in(118 mm) | 67% | 5.8 |
| JulJuly | 83°F(28°C) | 62°F(17°C) | 3.8 in(97 mm) | 73% | 6.0 |
| AugAugust | 81°F(27°C) | 60°F(16°C) | 3.8 in(96 mm) | 75% | 5.2 |
| SepSeptemberBest | 74°F(23°C) | 52°F(11°C) | 3.5 in(88 mm) | 72% | 4.1 |
| OctOctober | 60°F(16°C) | 40°F(4°C) | 2.6 in(65 mm) | 65% | 2.5 |
| NovNovember | 44°F(7°C) | 28°F(-2°C) | 1.5 in(37 mm) | 70% | 1.6 |
| DecDecember | 31°F(-1°C) | 15°F(-9°C) | 1.3 in(34 mm) | 95% | 1.2 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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