September Weather in Boerne

Last updated: March 2, 2024

The weather in Boerne, United States, during September is characterized by an average temperature of 26°C (78°F). Highs can soar to 36°C (98°F), while lows may dip to 14°C (58°F). Typically, the humidity level in Boerne throughout September hovers around 65%.

14°C (58°F)

Minimum temperature

26°C (78°F)

Average temperature

36°C (98°F)

Maximum temperature

65%

Humidity

Precipitation and Sunshine hours

In September, Boerne averages 118 mm (4.7 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 12 hours 17 minutes of daylight, with the sun shining for approximately 9 hours 17 minutes each day. Additionally, there is a 61% probability of sunny days during this period.

118 mm (4.7 inches)

Precipitation

11 rainy days

Rainy days

9 hours 17 minutes

Sunshine hours

61%

Chance of sun

UV Index

In September, the UV Index in Boerne reaches a maximum of 11, 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	0	1	2	4	7	9	11	10	9	6	4	2	1
Exposure	Low			Moderate	High	VeryHigh	Extreme	VeryHigh		High	Moderate	Low
Time to burn	45 min			30 min	25 min	15 min	10 min	15 min		25 min	30 min	45 min