Last updated: June 24, 2025
In September, the average temperature in Jamestown West, United States is a pleasant 17°C (63°F). However, be prepared for a range of temperatures, as it can dip to a chilly 1°C (35°F) and peak at a warm 30°C (87°F). With an average precipitation of 90 mm (3.5 in) spread over 10 days, don't forget your umbrella! Additionally, the air is moderately humid, with an average humidity of 67%.
In September in Jamestown West, the average temperature is 17°C (63°F). Maximum temperatures can reach up to 30°C (87°F), while minimum temperatures can drop as low as 1°C (35°F). This diverse temperature range makes Jamestown West an ideal destination for travelers looking for both warm days and cool evenings.
In Jamestown West in September, the precipitation amount is 90 mm (3.5 in) over the course of 10 days.
In Jamestown West in September, humidity is 67%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket wrapping around you, making travel refreshing yet slightly muggy, as you navigate the sights with a pleasant, if slightly sticky, embrace.
In Jamestown West 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 Jamestown West.
UV Risk Categories
Weather in Jamestown West varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Jamestown West, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 100 mm (3.9 inches) | 89% | moderate |
| February Weather | -2°C (28°F) | 112 mm (4.4 inches) | 90% | moderate |
| March Weather | 1°C (35°F) | 101 mm (4.0 inches) | 89% | high |
| April Weather | 7°C (45°F) | 127 mm (5.0 inches) | 88% | very high |
| May Weather | 14°C (57°F) | 139 mm (5.5 inches) | 80% | very high |
| June Weather | 18°C (66°F) | 140 mm (5.5 inches) | 79% | very high |
| July Weather | 21°C (70°F) | 135 mm (5.3 inches) | 74% | very high |
| August Weather | 20°C (68°F) | 106 mm (4.2 inches) | 64% | very high |
| September Weather | 17°C (63°F) | 90 mm (3.5 inches) | 67% | very high |
| October Weather | 11°C (52°F) | 131 mm (5.2 inches) | 81% | high |
| November Weather | 3°C (38°F) | 116 mm (4.6 inches) | 89% | moderate |
| December Weather | -1°C (31°F) | 110 mm (4.3 inches) | 88% | low |