Last updated: June 24, 2025
In Princeton, United States, the average temperature in October hovers around 19°C (66°F), making it a pleasant time to visit. However, be prepared for some temperature fluctuations, as it can drop to a chilly 1°C (34°F) at times or rise as high as 36°C (97°F). Expect 68 mm (2.7 in) of precipitation spread over approximately 7 days, and with an average humidity level of 80%, the weather can feel quite muggy. Plan accordingly to make the most of your experience!
In October in Princeton, the average temperature is 19°C (66°F), with maximums reaching 36°C (97°F) and minimums dropping as low as 1°C (34°F). Visitors should be prepared for a wide range of temperatures, making it essential to pack both warm and cool clothing.
In Princeton in October, the precipitation amount is 68 mm (2.7 in) over the course of 7 days.
In Princeton in October humidity is 80%. With an average temperature of 19°C (66°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor activities feel more strenuous and sticky, which can ultimately dampen the experience of traveling.
In Princeton in October, 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 Princeton.
UV Risk Categories
Weather in Princeton varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Princeton, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 7°C (45°F) | 92 mm (3.6 inches) | 85% | moderate |
February Weather | 10°C (50°F) | 92 mm (3.6 inches) | 82% | high |
March Weather | 12°C (54°F) | 73 mm (2.9 inches) | 81% | very high |
April Weather | 17°C (63°F) | 106 mm (4.2 inches) | 80% | very high |
May Weather | 22°C (72°F) | 118 mm (4.7 inches) | 81% | very high |
June Weather | 25°C (77°F) | 125 mm (4.9 inches) | 81% | extreme |
July Weather | 27°C (81°F) | 124 mm (4.9 inches) | 81% | extreme |
August Weather | 26°C (79°F) | 158 mm (6.2 inches) | 80% | very high |
September Weather | 24°C (75°F) | 134 mm (5.3 inches) | 79% | very high |
October Weather | 19°C (66°F) | 68 mm (2.7 inches) | 80% | very high |
November Weather | 11°C (53°F) | 84 mm (3.3 inches) | 85% | moderate |
December Weather | 9°C (48°F) | 109 mm (4.3 inches) | 86% | moderate |