September Weather in Van Alstyne

Last updated: March 2, 2024

The weather in Van Alstyne, United States, during September is characterized by an average temperature of 25°C (78°F). Highs can soar to 35°C (96°F), while lows may dip to 14°C (57°F). Typically, the humidity level in Van Alstyne throughout September hovers around 65%.

14°C (57°F)

Minimum temperature

25°C (78°F)

Average temperature

35°C (96°F)

Maximum temperature

65%

Humidity

Precipitation and Sunshine hours

In September, Van Alstyne averages 105 mm (4.1 inches) of rainfall, typically over the course of 7 rainy days. The month enjoys an average of 12 hours 19 minutes of daylight, with the sun shining for approximately 9 hours 27 minutes each day. Additionally, there is a 67% probability of sunny days during this period.

105 mm (4.1 inches)

Precipitation

7 rainy days

Rainy days

9 hours 27 minutes

Sunshine hours

67%

Chance of sun

UV Index

In September, the UV Index in Van Alstyne 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	1	2	4	6	9	10	9	8	5	3	1	1
Exposure	Low			Moderate	High	VeryHigh				Moderate		Low
Time to burn	45 min			30 min	25 min	15 min				30 min		45 min