Marion, Indiana Climate by Month
Marion, Indiana, United States
Warm summers and freezing winters, with rain spread through the year.
The climate in Marion is one of warm summers and freezing winters, with rain spread through the year. July is the warmest month, with highs around 85°F (29°C); January is the coolest at 34°F (1°C), and nights dip to 19°F (-7°C). About 39 in (992 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 85°F(29°C)
- Average high, July
- Coldest nights
- 19°F(-7°C)
- Average low, January
- Rain per year
- 39 in(992 mm)
- No clear rainy season
- Humidity
- 73%
- Sunniest: July
Best and worst months in Marion
Best for weatherSeptember is the best time for weather in Marion: highs near 78°F (25°C) and about 2.5 in (64 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 34°F (1°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)
Marion weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 34°F(1°C) | 19°F(-7°C) | 2.4 in(62 mm) | 84% | 1.4 |
| FebFebruary | 38°F(3°C) | 21°F(-6°C) | 2.2 in(56 mm) | 73% | 2.4 |
| MarMarch | 49°F(9°C) | 30°F(-1°C) | 3.0 in(76 mm) | 74% | 3.6 |
| AprApril | 62°F(17°C) | 40°F(4°C) | 3.8 in(96 mm) | 63% | 4.5 |
| MayMay | 73°F(23°C) | 51°F(10°C) | 4.4 in(113 mm) | 69% | 5.2 |
| JunJune | 82°F(28°C) | 60°F(16°C) | 4.4 in(111 mm) | 70% | 5.7 |
| JulJuly | 85°F(29°C) | 63°F(17°C) | 4.0 in(102 mm) | 70% | 6.1 |
| AugAugust | 83°F(29°C) | 62°F(16°C) | 3.6 in(91 mm) | 74% | 5.2 |
| SepSeptemberBest | 78°F(25°C) | 54°F(12°C) | 2.5 in(64 mm) | 69% | 4.3 |
| OctOctober | 65°F(19°C) | 43°F(6°C) | 2.8 in(71 mm) | 70% | 2.9 |
| NovNovember | 51°F(10°C) | 33°F(0°C) | 3.1 in(80 mm) | 78% | 1.8 |
| DecDecember | 38°F(4°C) | 24°F(-5°C) | 2.8 in(70 mm) | 85% | 1.3 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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