May Weather in Princeton

Last updated: March 2, 2024

The weather in Princeton, United States, during May is characterized by an average temperature of 18°C (64°F). Highs can soar to 32°C (90°F), while lows may dip to 5°C (41°F). Typically, the humidity level in Princeton throughout May hovers around 77%.

5°C (41°F)

Minimum temperature

18°C (64°F)

Average temperature

32°C (90°F)

Maximum temperature

77%

Humidity

Precipitation and Sunshine hours

In May, Princeton averages 158 mm (6.2 inches) of rainfall, typically over the course of 16 rainy days. The month enjoys an average of 14 hours 26 minutes of daylight, with the sun shining for approximately 8 hours 42 minutes each day. Additionally, there is a 28% probability of sunny days during this period.

158 mm (6.2 inches)

Precipitation

16 rainy days

Rainy days

8 hours 42 minutes

Sunshine hours

28%

Chance of sun

UV Index

In May, the UV Index in Princeton reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 2 3 5 7 9 10 9 8 5 3 2 1
Exposure Low Moderate High VeryHigh Moderate Low
Time to burn 45 min 30 min 25 min 15 min 30 min 45 min

Compare Princeton's Climate with Cities Worldwide