January Weather in Riverton, United States

Last updated: June 24, 2025

In January, the average temperature in Riverton, United States hovers around -2°C (28°F). Visitors should be prepared for a range of temperatures, as it can dip as low as -20°C (-4°F) and rise to a maximum of 12°C (54°F). Expect about 50 mm (2.0 in) of precipitation spread over 9 days, with a notable average humidity of 91%.

January Temperature in Riverton

In January in Riverton, the average temperature is -2°C (28°F). The maximum can reach 12°C (54°F), while the minimum can drop as low as -20°C (-4°F). Be sure to pack warm clothing if you're planning to travel during this time.

January Weather in Riverton: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Riverton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riverton, January typically has an average temperature of -2°C (28°F), with highs reaching up to 12°C (54°F) and lows dropping to around -20°C (-4°F).

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

January Precipitation in Riverton

In Riverton in January, the precipitation amount is 50 mm (2.0 in) over the course of 9 days.

January Precipitation Trends in Riverton

The chart displays monthly precipitation patterns in Riverton, 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 Riverton, January typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 9 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 Riverton

In Riverton in January humidity is 91%. With an average temperature of -2°C (28°F), this humidity feels like an icy grip on your skin, making every breath feel heavy and damp, which can be particularly uncomfortable for traveling.

January Average Humidity in Riverton

This chart illustrates the average monthly humidity levels in Riverton, 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 Riverton is approximately 91%, 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 Riverton

In Riverton 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 Riverton for better planning.

Maximum UV Index Levels in Riverton for January

The chart shows the monthly maximum UV Index (UVI) for Riverton 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 Riverton typically reaches 4, which falls under the moderate exposure category.

Data source: Riverton 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 Riverton Compares to Other Months

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

This table compares monthly weather conditions in Riverton, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	50 mm (2.0 inches)	91%	moderate
February Weather	0°C (32°F)	58 mm (2.3 inches)	92%	high
March Weather	5°C (41°F)	64 mm (2.5 inches)	84%	high
April Weather	9°C (49°F)	60 mm (2.3 inches)	74%	very high
May Weather	15°C (59°F)	44 mm (1.7 inches)	62%	extreme
June Weather	22°C (73°F)	12 mm (0.5 inches)	56%	extreme
July Weather	27°C (81°F)	10 mm (0.4 inches)	44%	extreme
August Weather	26°C (78°F)	18 mm (0.7 inches)	37%	extreme
September Weather	20°C (68°F)	31 mm (1.2 inches)	46%	very high
October Weather	10°C (51°F)	36 mm (1.4 inches)	67%	high
November Weather	5°C (41°F)	30 mm (1.2 inches)	84%	moderate
December Weather	-2°C (29°F)	43 mm (1.7 inches)	88%	moderate