Last updated: June 24, 2025
In October, the average temperature in Indianapolis, United States hovers around 14°C (58°F), but be prepared for a range that can dip to a minimum of -1°C (30°F) and soar to a maximum of 32°C (91°F). Precipitation is notable, with about 103 mm (4.0 in) falling over 11 days, making it a month where average humidity remains relatively high at 76%.
In October in Indianapolis, the average temperature is 14°C (58°F). Maximums can reach 32°C (91°F), and minimums can be as low as -1°C (30°F). This wide range of temperatures can make your travel experience in Indianapolis quite varied, so be sure to pack accordingly!
In Indianapolis in October, the total precipitation amount is 103 mm (4.0 in), occurring over the course of 11 days.
In Indianapolis in October humidity is 76%. With an average temperature of 14°C (58°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor activities feel sticky and draining, and prompting travelers to seek shade and stay hydrated often.
In Indianapolis in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Indianapolis, you can refer to this Hourly UV Index in Indianapolis.
UV Risk Categories
Weather in Indianapolis varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Indianapolis, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -1°C (30°F) | 82 mm (3.2 inches) | 87% | moderate |
February Weather | 1°C (34°F) | 93 mm (3.7 inches) | 85% | moderate |
March Weather | 6°C (43°F) | 127 mm (5.0 inches) | 86% | high |
April Weather | 11°C (52°F) | 94 mm (3.7 inches) | 84% | very high |
May Weather | 18°C (65°F) | 132 mm (5.2 inches) | 79% | very high |
June Weather | 23°C (74°F) | 107 mm (4.2 inches) | 82% | extreme |
July Weather | 25°C (77°F) | 108 mm (4.2 inches) | 79% | very high |
August Weather | 23°C (74°F) | 101 mm (4.0 inches) | 70% | very high |
September Weather | 21°C (70°F) | 80 mm (3.2 inches) | 69% | very high |
October Weather | 14°C (58°F) | 103 mm (4.0 inches) | 76% | high |
November Weather | 5°C (42°F) | 93 mm (3.7 inches) | 88% | moderate |
December Weather | 2°C (36°F) | 80 mm (3.2 inches) | 87% | moderate |