January Weather in Fountain Hills, United States

Last updated: June 24, 2025

In January, the average temperature in Fountain Hills, United States hovers around 12°C (53°F), with a minimum of -2°C (29°F) and a maximum of 28°C (82°F). Expect some rain, with an average precipitation of 33 mm (1.3 in) spread over 4 days. The air tends to be quite humid, with an average humidity level of 76%.

January Temperature in Fountain Hills

In January in Fountain Hills, the average temperature is 12°C (53°F). The maximum can reach 28°C (82°F), and the minimum can be as low as -2°C (29°F). Be prepared for a wide range of temperatures when traveling, so pack accordingly!

January Weather in Fountain Hills: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Fountain Hills, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fountain Hills, January typically has an average temperature of 12°C (53°F), with highs reaching up to 28°C (82°F) and lows dropping to around -2°C (29°F).

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

January Precipitation in Fountain Hills

In Fountain Hills in January, the precipitation amount is 33 mm (1.3 in) over a span of 4 days.

January Precipitation Trends in Fountain Hills

The chart displays monthly precipitation patterns in Fountain Hills, 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 Fountain Hills, January typically receives around 33 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.

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Millimeters (mm) Inches (in)

January Humidity in Fountain Hills

In Fountain Hills in January humidity is 76%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that settles into your bones, making outdoor activities a bit uncomfortable and necessitating layers to stay warm while exploring.

January Average Humidity in Fountain Hills

This chart illustrates the average monthly humidity levels in Fountain Hills, 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 Fountain Hills 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 Fountain Hills

In Fountain Hills 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 Fountain Hills for better planning.

Maximum UV Index Levels in Fountain Hills for January

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

Data source: Fountain Hills 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 Fountain Hills Compares to Other Months

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

This table compares monthly weather conditions in Fountain Hills, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (53°F)	33 mm (1.3 inches)	76%	moderate
February Weather	13°C (56°F)	44 mm (1.7 inches)	79%	high
March Weather	17°C (63°F)	31 mm (1.2 inches)	67%	very high
April Weather	23°C (74°F)	2 mm (0.1 inches)	55%	very high
May Weather	27°C (81°F)	2 mm (0.1 inches)	40%	extreme
June Weather	33°C (92°F)	2 mm (0.1 inches)	33%	extreme
July Weather	34°C (94°F)	38 mm (1.5 inches)	34%	extreme
August Weather	34°C (93°F)	33 mm (1.3 inches)	48%	extreme
September Weather	31°C (88°F)	28 mm (1.1 inches)	64%	very high
October Weather	24°C (75°F)	25 mm (1.0 inches)	67%	very high
November Weather	18°C (65°F)	23 mm (0.9 inches)	77%	moderate
December Weather	12°C (54°F)	27 mm (1.0 inches)	82%	moderate