September Weather in Caldwell

Last updated: March 2, 2024

The weather in Caldwell, United States, during September is characterized by an average temperature of 27°C (81°F). Highs can soar to 37°C (99°F), while lows may dip to 16°C (60°F). Typically, the humidity level in Caldwell throughout September hovers around 69%.

16°C (60°F)

Minimum temperature

27°C (81°F)

Average temperature

37°C (99°F)

Maximum temperature

69%

Humidity

Precipitation and Sunshine hours

In September, Caldwell averages 127 mm (5.0 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 12 hours 18 minutes of daylight, with the sun shining for approximately 9 hours 22 minutes each day. Additionally, there is a 55% probability of sunny days during this period.

127 mm (5.0 inches)

Precipitation

11 rainy days

Rainy days

9 hours 22 minutes

Sunshine hours

55%

Chance of sun

UV Index

In September, the UV Index in Caldwell 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 0 1 2 4 7 9 10 10 8 6 3 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 Caldwell's Climate with Cities Worldwide