Last updated: June 24, 2025
In September, the average temperature in Cambridge, United States hovers around 23°C (74°F). Visitors can expect a minimum temperature of 12°C (53°F) and a maximum of 32°C (90°F). With 99 mm (3.9 in) of precipitation spread over 9 days, the air feels quite humid, boasting an average humidity level of 75%.
In September in Cambridge, the average temperature is 23°C (74°F). The maximum can reach 32°C (90°F), while the minimum can drop to as low as 12°C (53°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy the diverse activities that Cambridge has to offer.
In Cambridge in September, the precipitation amount is 99 mm (3.9 in) during a span of 9 days.
In Cambridge in September, humidity is 75%. With an average temperature of 23°C (74°F), this humidity feels like a warm, heavy blanket wrapping around you, making it feel more sweltering than it actually is, which can be quite uncomfortable for traveling.
In Cambridge 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 Cambridge.
UV Risk Categories
Weather in Cambridge varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Cambridge, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 4°C (39°F) | 68 mm (2.7 inches) | 84% | moderate |
February Weather | 5°C (42°F) | 101 mm (4.0 inches) | 83% | moderate |
March Weather | 8°C (47°F) | 88 mm (3.5 inches) | 83% | high |
April Weather | 14°C (57°F) | 86 mm (3.4 inches) | 81% | very high |
May Weather | 19°C (66°F) | 115 mm (4.5 inches) | 78% | very high |
June Weather | 24°C (75°F) | 90 mm (3.5 inches) | 79% | very high |
July Weather | 27°C (81°F) | 136 mm (5.4 inches) | 74% | very high |
August Weather | 26°C (79°F) | 148 mm (5.8 inches) | 72% | very high |
September Weather | 23°C (74°F) | 99 mm (3.9 inches) | 75% | very high |
October Weather | 18°C (65°F) | 118 mm (4.7 inches) | 81% | high |
November Weather | 10°C (51°F) | 86 mm (3.4 inches) | 85% | moderate |
December Weather | 6°C (44°F) | 100 mm (3.9 inches) | 84% | moderate |