April Weather in Princeton

Last updated: March 2, 2024

The weather in Princeton, United States, during April is characterized by an average temperature of 25°C (78°F). Highs can soar to 32°C (90°F), while lows may dip to 15°C (59°F). Typically, the humidity level in Princeton throughout April hovers around 73%.

15°C (59°F)

Minimum temperature

25°C (78°F)

Average temperature

32°C (90°F)

Maximum temperature

73%

Humidity

Precipitation and Sunshine hours

In April, Princeton averages 58 mm (2.3 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 12 hours 46 minutes of daylight, with the sun shining for approximately 11 hours 11 minutes each day. Additionally, there is a 55% probability of sunny days during this period.

58 mm (2.3 inches)

Precipitation

10 rainy days

Rainy days

11 hours 11 minutes

Sunshine hours

55%

Chance of sun

UV Index

In April, the UV Index in Princeton reaches a maximum of 12, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 10 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	1	2	5	8	10	12	11	9	6	3	1	1
Exposure	Low			Moderate	VeryHigh		Extreme		VeryHigh	High	Moderate	Low
Time to burn	45 min			30 min	15 min		10 min		15 min	25 min	30 min	45 min