January Weather in Effingham, United States

Last updated: June 24, 2025

In January, the average temperature in Effingham, United States hovers around -1°C (30°F). Expect a minimum chill of -23°C (-9°F) and a maximum of 17°C (64°F). With 40 mm (1.6 in) of precipitation spread over 5 days, it's wise to prepare for some wet weather. Average humidity sits at a notable 76%, adding to the brisk atmosphere.

January Temperature in Effingham

In January in Effingham, the average temperature is -1°C (30°F). Maximums can reach 17°C (64°F), while minimums can drop as low as -23°C (-9°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates January temperature patterns in Effingham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Effingham, January typically has an average temperature of -1°C (30°F), with highs reaching up to 17°C (64°F) and lows dropping to around -23°C (-9°F).

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

January Precipitation in Effingham

In Effingham in January, the precipitation amount is 40 mm (1.6 in) over the course of 5 days.

January Precipitation Trends in Effingham

The chart displays monthly precipitation patterns in Effingham, 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 Effingham, January typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 5 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 Effingham

In Effingham in January, humidity is 76%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that penetrates your layers, making outdoor activities less enjoyable and prompting travelers to seek warmth and shelter more often than not.

January Average Humidity in Effingham

This chart illustrates the average monthly humidity levels in Effingham, 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 Effingham 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 Effingham

In Effingham 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 Effingham, you can check the information here.

Maximum UV Index Levels in Effingham for January

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

Data source: Effingham 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 Effingham Compares to Other Months

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

This table compares monthly weather conditions in Effingham, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	40 mm (1.6 inches)	76%	moderate
February Weather	0°C (31°F)	31 mm (1.2 inches)	77%	moderate
March Weather	7°C (46°F)	94 mm (3.7 inches)	70%	high
April Weather	12°C (54°F)	81 mm (3.2 inches)	73%	very high
May Weather	18°C (65°F)	217 mm (8.6 inches)	82%	very high
June Weather	25°C (77°F)	112 mm (4.4 inches)	82%	extreme
July Weather	27°C (80°F)	76 mm (3.0 inches)	81%	extreme
August Weather	25°C (77°F)	119 mm (4.7 inches)	78%	very high
September Weather	22°C (72°F)	83 mm (3.3 inches)	71%	very high
October Weather	13°C (56°F)	117 mm (4.6 inches)	71%	high
November Weather	6°C (43°F)	38 mm (1.5 inches)	81%	moderate
December Weather	2°C (37°F)	32 mm (1.2 inches)	84%	moderate