May Weather in Lake Saint Louis

Last updated: March 2, 2024

The weather in Lake Saint Louis, United States, during May is characterized by an average temperature of 19°C (67°F). Highs can soar to 32°C (90°F), while lows may dip to 7°C (44°F). Typically, the humidity level in Lake Saint Louis throughout May hovers around 82%.

7°C (44°F)

Minimum temperature

19°C (67°F)

Average temperature

32°C (90°F)

Maximum temperature

82%

Humidity

Precipitation and Sunshine hours

In May, Lake Saint Louis averages 145 mm (5.7 inches) of rainfall, typically over the course of 14 rainy days. The month enjoys an average of 14 hours 18 minutes of daylight, with the sun shining for approximately 9 hours 17 minutes each day. Additionally, there is a 26% probability of sunny days during this period.

145 mm (5.7 inches)

Precipitation

14 rainy days

Rainy days

9 hours 17 minutes

Sunshine hours

26%

Chance of sun

UV Index

In May, the UV Index in Lake Saint Louis reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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	2	4	6	8	10	10	9	8	5	3	2	1
Exposure	Low		Moderate	High	VeryHigh					Moderate		Low
Time to burn	45 min		30 min	25 min	15 min					30 min		45 min