Last updated: June 24, 2025
In September, the average temperature in Newport, United States is a mild 16°C (61°F). However, be prepared for a temperature range that can swing from a chilly -1°C (30°F) to a warm 31°C (88°F). With 94 mm (3.7 in) of precipitation spread over 10 days, you might want to pack an umbrella. The atmosphere tends to be quite humid, with an average humidity of 78%, making it feel a bit warmer than it is.
In September, in Newport, the average temperature is a pleasant 16°C (61°F), with maximums reaching up to 31°C (88°F) and minimums dipping as low as -1°C (30°F). This weather makes Newport an ideal destination for those seeking a diverse climate experience during their travels.
In Newport in September, the precipitation amount is 94 mm (3.7 in) over a duration of 10 days.
In Newport in September, humidity is 78%. With an average temperature of 16°C (61°F), this humidity feels like a warm, sticky embrace, making travel somewhat uncomfortable as it clings to your skin and creates a heavy atmosphere that can drain your energy.
In Newport 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 Newport.
UV Risk Categories
Weather in Newport varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Newport, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 108 mm (4.3 inches) | 90% | moderate |
| February Weather | -4°C (25°F) | 118 mm (4.7 inches) | 90% | moderate |
| March Weather | -1°C (31°F) | 102 mm (4.0 inches) | 87% | high |
| April Weather | 6°C (44°F) | 139 mm (5.5 inches) | 88% | very high |
| May Weather | 13°C (56°F) | 136 mm (5.3 inches) | 82% | very high |
| June Weather | 18°C (65°F) | 123 mm (4.9 inches) | 79% | very high |
| July Weather | 21°C (70°F) | 157 mm (6.2 inches) | 78% | very high |
| August Weather | 20°C (68°F) | 134 mm (5.3 inches) | 76% | very high |
| September Weather | 16°C (61°F) | 94 mm (3.7 inches) | 78% | very high |
| October Weather | 10°C (51°F) | 179 mm (7.1 inches) | 84% | high |
| November Weather | 2°C (35°F) | 136 mm (5.3 inches) | 89% | moderate |
| December Weather | -3°C (27°F) | 129 mm (5.1 inches) | 86% | low |