Last updated: June 24, 2025
In July, the average temperature in Princeton, United States is a warm 26°C (78°F), making it an inviting destination. You'll experience a minimum temperature of 14°C (58°F), while highs can soar to 37°C (99°F). Expect about 106 mm (4.2 in) of precipitation spread over 8 days, contributing to an average humidity level of 81%. This combination creates a lush and vibrant environment perfect for exploration!
In July in Princeton, the average temperature is 26°C (78°F). The maximum can reach 37°C (99°F) and the minimum can be as low as 14°C (58°F). Be prepared for warm days and cool evenings, making it an ideal time for both sightseeing and outdoor activities.
In Princeton in July, the precipitation amount is 106 mm (4.2 in) over a span of 8 days.
In Princeton in July, humidity is 81%. With an average temperature of 26°C (78°F), this humidity feels like a thick, warm blanket enveloping you, making outdoor activities feel a bit more strenuous and the air heavy, which can be quite challenging for traveling.
In Princeton in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check 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 July’s weather to other months in Princeton, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -4°C (26°F) | 48 mm (1.9 inches) | 78% | moderate |
February Weather | -2°C (28°F) | 44 mm (1.7 inches) | 80% | moderate |
March Weather | 6°C (42°F) | 103 mm (4.0 inches) | 77% | high |
April Weather | 10°C (51°F) | 78 mm (3.1 inches) | 77% | very high |
May Weather | 18°C (64°F) | 158 mm (6.2 inches) | 77% | very high |
June Weather | 24°C (76°F) | 124 mm (4.9 inches) | 81% | extreme |
July Weather | 26°C (78°F) | 106 mm (4.2 inches) | 81% | extreme |
August Weather | 24°C (75°F) | 88 mm (3.5 inches) | 77% | very high |
September Weather | 21°C (70°F) | 119 mm (4.7 inches) | 73% | very high |
October Weather | 12°C (54°F) | 154 mm (6.1 inches) | 75% | high |
November Weather | 5°C (40°F) | 55 mm (2.2 inches) | 85% | moderate |
December Weather | 1°C (34°F) | 34 mm (1.4 inches) | 83% | moderate |