Last updated: June 24, 2025
In September, the average temperature in Saint Joseph, United States hovers around 24°C (75°F). However, be prepared for a range of temperatures, with minimums dipping to 9°C (48°F) and maximums soaring to 36°C (97°F). During this time, expect 104 mm (4.1 in) of precipitation spread over 9 days, contributing to an average humidity of 70%.
In September in Saint Joseph, the average temperature is 24°C (75°F). Maximums can reach 36°C (97°F), and minimums can be as low as 9°C (48°F). It's a great time to visit for those who enjoy warm weather, but be prepared for occasional temperature fluctuations.
In Saint Joseph in September, the precipitation amount is 104 mm (4.1 in) over the course of 9 days.
In Saint Joseph in September, humidity is 70%. With an average temperature of 24°C (75°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities a bit sluggish and sticky, ideal for leisurely strolls but requiring plenty of hydration.
In Saint Joseph in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Saint Joseph.
UV Risk Categories
Weather in Saint Joseph varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Saint Joseph, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 6°C (43°F) | 127 mm (5.0 inches) | 86% | moderate |
February Weather | 9°C (48°F) | 193 mm (7.6 inches) | 85% | high |
March Weather | 13°C (55°F) | 189 mm (7.4 inches) | 84% | very high |
April Weather | 16°C (61°F) | 163 mm (6.4 inches) | 81% | very high |
May Weather | 21°C (71°F) | 117 mm (4.6 inches) | 83% | extreme |
June Weather | 25°C (77°F) | 118 mm (4.6 inches) | 83% | extreme |
July Weather | 27°C (80°F) | 117 mm (4.6 inches) | 80% | extreme |
August Weather | 26°C (79°F) | 110 mm (4.3 inches) | 73% | very high |
September Weather | 24°C (75°F) | 104 mm (4.1 inches) | 70% | very high |
October Weather | 18°C (65°F) | 109 mm (4.3 inches) | 73% | high |
November Weather | 10°C (50°F) | 76 mm (3.0 inches) | 85% | moderate |
December Weather | 8°C (47°F) | 158 mm (6.2 inches) | 88% | moderate |