Last updated: June 24, 2025
The average temperature in Sheridan, United States for the month of September is a pleasant 20°C (68°F). Temperatures can vary significantly, with a minimum of 3°C (38°F) and a maximum reaching 35°C (94°F). Visitors can expect around 96 mm (3.8 in) of precipitation over 9 days, paired with an average humidity level of 80%. Be prepared for a mix of warm and humid days!
In September in Sheridan, the average temperature is 20°C (68°F). Maximums can reach 35°C (94°F) and minimums can be as low as 3°C (38°F). This makes it an ideal time for travelers to experience a range of activities, from enjoying warm days outdoors to cozying up in the cooler evenings.
In Sheridan in September, the total precipitation amount is 96 mm (3.8 in) spread over a period of 9 days.
In Sheridan in September, humidity is 80%. With an average temperature of 20°C (68°F), this humidity feels like traveling through a warm, dense blanket that clings to your skin, making you feel both sticky and lethargic as you explore the sights.
In Sheridan in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to 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) | 62 mm (2.4 inches) | 82% | moderate |
| February Weather | -3°C (27°F) | 63 mm (2.5 inches) | 83% | moderate |
| March Weather | 4°C (40°F) | 90 mm (3.5 inches) | 84% | high |
| April Weather | 10°C (49°F) | 115 mm (4.5 inches) | 85% | very high |
| May Weather | 17°C (62°F) | 160 mm (6.3 inches) | 79% | very high |
| June Weather | 23°C (73°F) | 142 mm (5.6 inches) | 82% | very high |
| July Weather | 24°C (76°F) | 105 mm (4.1 inches) | 80% | very high |
| August Weather | 23°C (73°F) | 75 mm (2.9 inches) | 81% | very high |
| September Weather | 20°C (68°F) | 96 mm (3.8 inches) | 80% | very high |
| October Weather | 13°C (55°F) | 131 mm (5.2 inches) | 82% | high |
| November Weather | 4°C (39°F) | 56 mm (2.2 inches) | 88% | moderate |
| December Weather | 0°C (33°F) | 53 mm (2.1 inches) | 84% | low |