September Weather in Johnson

Last updated: March 2, 2024

The weather in Johnson, United States, during September is characterized by an average temperature of 22°C (73°F). Highs can soar to 38°C (100°F), while lows may dip to 8°C (46°F). Typically, the humidity level in Johnson throughout September hovers around 79%.

8°C (46°F)

Minimum temperature

22°C (73°F)

Average temperature

38°C (100°F)

Maximum temperature

79%

Humidity

Precipitation and Sunshine hours

In September, Johnson averages 34 mm (1.3 inches) of rainfall, typically over the course of 4 rainy days. The month enjoys an average of 12 hours 22 minutes of daylight, with the sun shining for approximately 10 hours 8 minutes each day. Additionally, there is a 77% probability of sunny days during this period.

34 mm (1.3 inches)

Precipitation

4 rainy days

Rainy days

10 hours 8 minutes

Sunshine hours

77%

Chance of sun

UV Index

In September, the UV Index in Johnson 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	3	5	8	9	9	8	6	4	2	1
Exposure	Low			Moderate		VeryHigh				High	Moderate	Low
Time to burn	45 min			30 min		15 min				25 min	30 min	45 min