September Weather in Colorado

Last updated: March 2, 2024

The weather in Colorado, Brazil, during September is characterized by an average temperature of 25°C (78°F). Highs can soar to 37°C (99°F), while lows may dip to 14°C (58°F). Typically, the humidity level in Colorado throughout September hovers around 47%.

14°C (58°F)

Minimum temperature

25°C (78°F)

Average temperature

37°C (99°F)

Maximum temperature

47%

Humidity

Precipitation and Sunshine hours

In September, Colorado averages 47 mm (1.8 inches) of rainfall, typically over the course of 6 rainy days. The month enjoys an average of 11 hours 57 minutes of daylight, with the sun shining for approximately 10 hours 10 minutes each day. Additionally, there is a 62% probability of sunny days during this period.

47 mm (1.8 inches)

Precipitation

6 rainy days

Rainy days

10 hours 10 minutes

Sunshine hours

62%

Chance of sun

UV Index

In September, the UV Index in Colorado reaches a maximum of 11, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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 1 2 4 7 10 11 11 9 6 3 1 1 0
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

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