September Weather in Monticello

Last updated: March 2, 2024

The weather in Monticello, United States, during September is characterized by an average temperature of 26°C (79°F). Highs can soar to 36°C (96°F), while lows may dip to 16°C (60°F). Typically, the humidity level in Monticello throughout September hovers around 79%.

16°C (60°F)

Minimum temperature

26°C (79°F)

Average temperature

36°C (96°F)

Maximum temperature

79%

Humidity

Precipitation and Sunshine hours

In September, Monticello averages 114 mm (4.5 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 12 hours 18 minutes of daylight, with the sun shining for approximately 9 hours 18 minutes each day. Additionally, there is a 48% probability of sunny days during this period.

114 mm (4.5 inches)

Precipitation

10 rainy days

Rainy days

9 hours 18 minutes

Sunshine hours

48%

Chance of sun

UV Index

In September, the UV Index in Monticello 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

Compare Monticello's Climate with Cities Worldwide