September Weather in Boone

Last updated: March 2, 2024

The weather in Boone, United States, during September is characterized by an average temperature of 18°C (65°F). Highs can soar to 27°C (81°F), while lows may dip to 8°C (46°F). Typically, the humidity level in Boone throughout September hovers around 68%.

8°C (46°F)

Minimum temperature

18°C (65°F)

Average temperature

27°C (81°F)

Maximum temperature

68%

Humidity

Precipitation and Sunshine hours

In September, Boone averages 134 mm (5.3 inches) of rainfall, typically over the course of 13 rainy days. The month enjoys an average of 12 hours 21 minutes of daylight, with the sun shining for approximately 9 hours 24 minutes each day. Additionally, there is a 49% probability of sunny days during this period.

134 mm (5.3 inches)

Precipitation

13 rainy days

Rainy days

9 hours 24 minutes

Sunshine hours

49%

Chance of sun

UV Index

In September, the UV Index in Boone 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 7 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

Compare Boone's Climate with Cities Worldwide