Last updated: June 24, 2025
In October, the average temperature in Saint Elmo, United States hovers around 15°C (59°F), with a range that sees lows of -4°C (25°F) and highs reaching up to 34°C (93°F). Expect 116 mm (4.5 in) of precipitation spread over about 11 days, contributing to a notable average humidity of 79%. Get ready for a month of varied weather!
In October in Saint Elmo, the average temperature is 15°C (59°F), with maximums reaching 34°C (93°F) and minimums dropping as low as -4°C (25°F). Be sure to pack clothes suitable for both warm days and chilly nights if you're planning to visit during this time.
In Saint Elmo in October, the precipitation amount is 116 mm (4.5 in) accumulated over the course of 11 days.
In Saint Elmo in October humidity is 79%. With an average temperature of 15°C (59°F), this humidity feels like a muggy embrace that clings to your skin, making outdoor activities somewhat uncomfortable. Travelers may find themselves frequently seeking shelter or refreshing drinks to combat the warm, damp air, as the moisture in the atmosphere feels particularly heavy, especially during longer excursions.
In Saint Elmo 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 Saint Elmo, you can refer to this Hourly UV Index in Saint Elmo.
UV Risk Categories
Weather in Saint Elmo varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Saint Elmo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 0°C (32°F) | 82 mm (3.2 inches) | 84% | moderate |
| February Weather | 2°C (35°F) | 86 mm (3.4 inches) | 82% | moderate |
| March Weather | 8°C (46°F) | 134 mm (5.3 inches) | 84% | high |
| April Weather | 13°C (55°F) | 126 mm (5.0 inches) | 83% | very high |
| May Weather | 20°C (67°F) | 153 mm (6.0 inches) | 80% | extreme |
| June Weather | 25°C (77°F) | 107 mm (4.2 inches) | 83% | extreme |
| July Weather | 26°C (79°F) | 99 mm (3.9 inches) | 82% | very high |
| August Weather | 24°C (76°F) | 105 mm (4.2 inches) | 82% | very high |
| September Weather | 22°C (72°F) | 65 mm (2.6 inches) | 79% | very high |
| October Weather | 15°C (59°F) | 116 mm (4.5 inches) | 79% | high |
| November Weather | 6°C (43°F) | 88 mm (3.5 inches) | 88% | moderate |
| December Weather | 3°C (38°F) | 75 mm (2.9 inches) | 87% | moderate |