January Weather in Upper Saint Clair, United States

Last updated: June 24, 2025

In January, the average temperature in Upper Saint Clair, United States hovers around 0°C (32°F). The extremes can be quite striking, with minimums dipping to -22°C (-6°F) and maximums reaching a pleasant 22°C (72°F). With 90 mm (3.5 in) of precipitation spread over 12 days, expect some light rain. The atmosphere is also notably humid, averaging around 88%, adding a unique touch to the local climate.

January Temperature in Upper Saint Clair

In January in Upper Saint Clair, the average temperature is 0°C (32°F), with maximums reaching 22°C (72°F) and minimums dropping as low as -22°C (-6°F). Travelers should be prepared for a wide range of temperatures, so layered clothing is advisable to enjoy all that Upper Saint Clair has to offer.

January Weather in Upper Saint Clair: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Upper Saint Clair, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Upper Saint Clair, January typically has an average temperature of 0°C (32°F), with highs reaching up to 22°C (72°F) and lows dropping to around -22°C (-6°F).

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

January Precipitation in Upper Saint Clair

In Upper Saint Clair in January, the precipitation amount is 90 mm (3.5 in) spread over 12 days.

January Precipitation Trends in Upper Saint Clair

The chart displays monthly precipitation patterns in Upper Saint Clair, 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 Upper Saint Clair, January typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 12 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Upper Saint Clair

In Upper Saint Clair in January, humidity is 88%. With an average temperature of 0°C (32°F), this humidity feels like a chilly, damp blanket enveloping you, making travel uncomfortable as every breath seems to carry the weight of the cold moisture, turning each step into a struggle against the biting chill.

January Average Humidity in Upper Saint Clair

This chart illustrates the average monthly humidity levels in Upper Saint Clair, 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 Upper Saint Clair is approximately 88%, 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 Upper Saint Clair

In Upper Saint Clair in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Upper Saint Clair, you can check the information here.

Maximum UV Index Levels in Upper Saint Clair for January

The chart shows the monthly maximum UV Index (UVI) for Upper Saint Clair 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 Upper Saint Clair typically reaches 3, which falls under the moderate exposure category.

Data source: Upper Saint Clair 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 Upper Saint Clair Compares to Other Months

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

This table compares monthly weather conditions in Upper Saint Clair, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	90 mm (3.5 inches)	88%	moderate
February Weather	2°C (36°F)	124 mm (4.9 inches)	88%	moderate
March Weather	6°C (42°F)	114 mm (4.5 inches)	87%	high
April Weather	11°C (52°F)	130 mm (5.1 inches)	87%	very high
May Weather	17°C (63°F)	150 mm (5.9 inches)	81%	very high
June Weather	21°C (70°F)	166 mm (6.5 inches)	83%	very high
July Weather	24°C (75°F)	156 mm (6.1 inches)	82%	very high
August Weather	23°C (73°F)	97 mm (3.8 inches)	76%	very high
September Weather	20°C (68°F)	128 mm (5.1 inches)	77%	very high
October Weather	14°C (58°F)	125 mm (4.9 inches)	82%	high
November Weather	6°C (43°F)	90 mm (3.5 inches)	89%	moderate
December Weather	3°C (37°F)	109 mm (4.3 inches)	86%	low