January Weather in Summerlin South, United States

Last updated: June 24, 2025

In January, the average temperature in Summerlin South, United States hovers at a cool 8°C (47°F), with fluctuations that can dip as low as -5°C (24°F) and soar up to 20°C (68°F). Expect about 19 mm (0.7 in) of precipitation over the course of 2 days, contributing to an average humidity of 76%. Perfect for cozy sweaters and warm beverages!

January Temperature in Summerlin South

In January in Summerlin South, the average temperature is 8°C (47°F). Maximums can reach 20°C (68°F), while minimums can drop to as low as -5°C (24°F). Be prepared for a range of temperatures to make the most of your travel experience.

January Weather in Summerlin South: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Summerlin South, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Summerlin South, January typically has an average temperature of 8°C (47°F), with highs reaching up to 20°C (68°F) and lows dropping to around -5°C (24°F).

Data source: Temperature data for Summerlin South generated using information from the Copernicus Climate Change Service.

January Precipitation in Summerlin South

In Summerlin South in January, the precipitation amount is 19 mm (0.7 in) over a span of 2 days.

January Precipitation Trends in Summerlin South

The chart displays monthly precipitation patterns in Summerlin South, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Summerlin South, January typically receives around 19 mm (0.7 inches) of precipitation spread over approximately 2 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Summerlin South

In Summerlin South in January, humidity is 76%. With an average temperature of 8°C (47°F), this humidity feels like traveling through a thick, damp blanket that clings to your skin, making every stroll feel heavier and more exhausting than it should.

January Average Humidity in Summerlin South

This chart illustrates the average monthly humidity levels in Summerlin South, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Summerlin South is approximately 76%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Summerlin South

In Summerlin South in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Summerlin South for better planning.

Maximum UV Index Levels in Summerlin South for January

The chart shows the monthly maximum UV Index (UVI) for Summerlin South in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Summerlin South typically reaches 4, which falls under the moderate exposure category.

Data source: Summerlin South January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Summerlin South Compares to Other Months

Weather in Summerlin South varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Summerlin South, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Summerlin South, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	19 mm (0.7 inches)	76%	moderate
February Weather	9°C (49°F)	22 mm (0.9 inches)	80%	high
March Weather	13°C (56°F)	19 mm (0.8 inches)	69%	very high
April Weather	19°C (66°F)	6 mm (0.2 inches)	57%	very high
May Weather	23°C (73°F)	8 mm (0.3 inches)	45%	extreme
June Weather	30°C (86°F)	1 mm (0.0 inches)	34%	extreme
July Weather	32°C (91°F)	17 mm (0.7 inches)	29%	extreme
August Weather	32°C (90°F)	11 mm (0.4 inches)	28%	extreme
September Weather	27°C (81°F)	5 mm (0.2 inches)	41%	very high
October Weather	19°C (66°F)	4 mm (0.2 inches)	54%	high
November Weather	13°C (56°F)	13 mm (0.5 inches)	68%	moderate
December Weather	8°C (46°F)	17 mm (0.7 inches)	75%	moderate