September Weather in Raleigh

Last updated: March 2, 2024

The weather in Raleigh, United States, during September is characterized by an average temperature of 26°C (78°F). Highs can soar to 35°C (96°F), while lows may dip to 15°C (60°F). Typically, the humidity level in Raleigh throughout September hovers around 80%.

15°C (60°F)

Minimum temperature

26°C (78°F)

Average temperature

35°C (96°F)

Maximum temperature

80%

Humidity

Precipitation and Sunshine hours

In September, Raleigh averages 95 mm (3.7 inches) of rainfall, typically over the course of 9 rainy days. The month enjoys an average of 12 hours 19 minutes of daylight, with the sun shining for approximately 9 hours 22 minutes each day. Additionally, there is a 49% probability of sunny days during this period.

95 mm (3.7 inches)

Precipitation

9 rainy days

Rainy days

9 hours 22 minutes

Sunshine hours

49%

Chance of sun

UV Index

In September, the UV Index in Raleigh 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 3 5 7 9 10 9 7 4 2 1 1
Exposure Low Moderate High VeryHigh High Moderate Low
Time to burn 45 min 30 min 25 min 15 min 25 min 30 min 45 min

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