January Weather in Arcadia, United States

Last updated: June 24, 2025

In Arcadia, United States, the average temperature in January hovers around 18°C (64°F). Expect a range from a brisk -1°C (30°F) to a warm 30°C (86°F). Be prepared for some moisture, with an average precipitation of 34 mm (1.3 in) spread over 4 days. The air tends to be quite humid, with an average humidity level of 83%.

January Temperature in Arcadia

In January, in Arcadia, the average temperature is 18°C (64°F). Maximum temperatures can reach 30°C (86°F), while minimums can drop as low as -1°C (30°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates January temperature patterns in Arcadia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arcadia, January typically has an average temperature of 18°C (64°F), with highs reaching up to 30°C (86°F) and lows dropping to around -1°C (30°F).

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

January Precipitation in Arcadia

In Arcadia in January, the precipitation amount is 34 mm (1.3 in) over a span of 4 days.

January Precipitation Trends in Arcadia

The chart displays monthly precipitation patterns in Arcadia, 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 Arcadia, January typically receives around 34 mm (1.3 inches) of precipitation spread over approximately 4 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 Arcadia

In Arcadia in January humidity is 83%. With an average temperature of 18°C (64°F), this humidity feels like a warm blanket enveloping you, making outdoor exploring somewhat sticky and requiring frequent hydration breaks.

January Average Humidity in Arcadia

This chart illustrates the average monthly humidity levels in Arcadia, 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 Arcadia is approximately 83%, 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 Arcadia

In Arcadia in January, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Arcadia, you can refer to this Hourly UV Index in Arcadia.

Maximum UV Index Levels in Arcadia for January

The chart shows the monthly maximum UV Index (UVI) for Arcadia 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 Arcadia typically reaches 6, which falls under the high exposure category.

Data source: Arcadia 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 Arcadia Compares to Other Months

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

This table compares monthly weather conditions in Arcadia, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	18°C (64°F)	34 mm (1.3 inches)	83%	high
February Weather	21°C (70°F)	45 mm (1.8 inches)	80%	very high
March Weather	22°C (71°F)	20 mm (0.8 inches)	75%	very high
April Weather	24°C (76°F)	63 mm (2.5 inches)	68%	extreme
May Weather	26°C (80°F)	128 mm (5.0 inches)	65%	extreme
June Weather	27°C (81°F)	241 mm (9.5 inches)	73%	extreme
July Weather	28°C (82°F)	289 mm (11.4 inches)	77%	extreme
August Weather	28°C (82°F)	265 mm (10.4 inches)	80%	extreme
September Weather	27°C (82°F)	186 mm (7.3 inches)	83%	extreme
October Weather	26°C (79°F)	72 mm (2.8 inches)	83%	very high
November Weather	22°C (71°F)	45 mm (1.8 inches)	83%	high
December Weather	19°C (67°F)	56 mm (2.2 inches)	84%	moderate