Last updated: June 24, 2025
In State Line, United States, the average temperature in September hovers around 21°C (70°F), with fluctuations ranging from a cool 4°C (40°F) to a warm 35°C (95°F). Expect about 110 mm (4.3 in) of precipitation spread across 9 days, while the average humidity remains around 68%. Enjoy the dynamic weather, perfect for all your adventures!
In September in State Line, the average temperature is 21°C (70°F). Maximum temperatures can reach up to 35°C (95°F), while minimum temperatures can drop as low as 4°C (40°F). Be prepared for a range of temperatures, so pack versatile clothing for your trip.
In State Line in September, the precipitation amount is 110 mm (4.3 in) over the course of 9 days.
In State Line in September humidity is 68%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making the air feel slightly heavy and sticky, which can be quite exhausting for travelers.
In State Line 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 State Line.
UV Risk Categories
Weather in State Line varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in State Line, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 1°C (34°F) | 62 mm (2.4 inches) | 86% | moderate |
February Weather | 3°C (38°F) | 94 mm (3.7 inches) | 86% | moderate |
March Weather | 6°C (44°F) | 88 mm (3.5 inches) | 86% | high |
April Weather | 12°C (54°F) | 101 mm (4.0 inches) | 84% | very high |
May Weather | 18°C (64°F) | 118 mm (4.7 inches) | 78% | very high |
June Weather | 23°C (73°F) | 90 mm (3.5 inches) | 79% | very high |
July Weather | 26°C (79°F) | 124 mm (4.9 inches) | 70% | very high |
August Weather | 24°C (76°F) | 87 mm (3.4 inches) | 59% | very high |
September Weather | 21°C (70°F) | 110 mm (4.3 inches) | 68% | very high |
October Weather | 15°C (60°F) | 104 mm (4.1 inches) | 80% | high |
November Weather | 7°C (45°F) | 81 mm (3.2 inches) | 86% | moderate |
December Weather | 3°C (38°F) | 95 mm (3.7 inches) | 85% | moderate |