Last updated: June 24, 2025
In September, the average temperature in Sheridan, United States hovers around 18°C (64°F), providing a mild climate. However, be prepared for some variability, as temperatures can dip to a chilly 1°C (34°F) or soar to a sweltering 35°C (95°F). With an average humidity of 79%, you may want to stay hydrated! Expect 113 mm (4.5 in) of rainfall over approximately 10 days during the month, so it's wise to pack an umbrella.
In September in Sheridan, the average temperature is 18°C (64°F). The maximum can reach 35°C (95°F), while the minimum can drop as low as 1°C (34°F). This range makes Sheridan an ideal destination for travelers seeking a diverse climate, offering both warm days and cool nights.
In Sheridan in September, the total precipitation amount is 113 mm (4.5 in) over the course of 10 days.
In Sheridan in September, humidity is 79%. With an average temperature of 18°C (64°F), this humidity feels like a warm, sticky embrace that can make outdoor activities more challenging but also creates a lush, vibrant atmosphere that's perfect for exploring local culture and scenery.
In Sheridan in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Sheridan.
UV Risk Categories
Weather in Sheridan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sheridan, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 60 mm (2.4 inches) | 87% | low |
| February Weather | -4°C (26°F) | 63 mm (2.5 inches) | 87% | moderate |
| March Weather | 2°C (36°F) | 62 mm (2.4 inches) | 86% | moderate |
| April Weather | 8°C (46°F) | 89 mm (3.5 inches) | 87% | very high |
| May Weather | 15°C (59°F) | 124 mm (4.9 inches) | 82% | very high |
| June Weather | 21°C (69°F) | 122 mm (4.8 inches) | 81% | very high |
| July Weather | 24°C (75°F) | 63 mm (2.5 inches) | 78% | very high |
| August Weather | 22°C (72°F) | 70 mm (2.8 inches) | 79% | very high |
| September Weather | 18°C (64°F) | 113 mm (4.5 inches) | 79% | high |
| October Weather | 11°C (52°F) | 126 mm (5.0 inches) | 82% | moderate |
| November Weather | 3°C (38°F) | 59 mm (2.3 inches) | 87% | moderate |
| December Weather | -1°C (31°F) | 65 mm (2.6 inches) | 86% | low |