January Weather in Harper, United States

Last updated: June 24, 2025

In January, the average temperature in Harper, United States hovers around 9°C (49°F). Visitors should prepare for a chill, as minimum temperatures can dip to -10°C (14°F), while maximums can reach a balmy 27°C (80°F). Expect some rain too, with 39 mm (1.5 in) of precipitation spread over just 5 days, and keep in mind that humidity levels are typically around 78%.

January Temperature in Harper

In January in Harper, the average temperature is 9°C (49°F). Maximums can reach 27°C (80°F) and minimums can drop as low as -10°C (14°F). Travelers should be prepared for a wide range of temperatures and dress in layers to ensure comfort during their visit.

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

The chart illustrates January temperature patterns in Harper, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harper, January typically has an average temperature of 9°C (49°F), with highs reaching up to 27°C (80°F) and lows dropping to around -10°C (14°F).

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

January Precipitation in Harper

In Harper in January, the precipitation amount is 39 mm (1.5 in) spread over a duration of 5 days.

January Precipitation Trends in Harper

The chart displays monthly precipitation patterns in Harper, 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 Harper, January typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 5 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 Harper

In Harper in January, humidity is 78%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that clings to your skin, making it essential to dress in layers while traveling, as the cool air combines with the moisture to create a brisk and invigorating atmosphere.

January Average Humidity in Harper

This chart illustrates the average monthly humidity levels in Harper, 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 Harper is approximately 78%, 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 Harper

In Harper in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Harper.

Maximum UV Index Levels in Harper for January

The chart shows the monthly maximum UV Index (UVI) for Harper 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 Harper typically reaches 5, which falls under the moderate exposure category.

Data source: Harper 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 Harper Compares to Other Months

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

This table compares monthly weather conditions in Harper, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	39 mm (1.5 inches)	78%	moderate
February Weather	11°C (52°F)	46 mm (1.8 inches)	78%	very high
March Weather	16°C (61°F)	61 mm (2.4 inches)	77%	very high
April Weather	19°C (66°F)	80 mm (3.2 inches)	78%	extreme
May Weather	23°C (74°F)	143 mm (5.6 inches)	82%	extreme
June Weather	26°C (79°F)	54 mm (2.1 inches)	78%	extreme
July Weather	28°C (82°F)	43 mm (1.7 inches)	69%	extreme
August Weather	28°C (82°F)	47 mm (1.9 inches)	63%	extreme
September Weather	25°C (77°F)	95 mm (3.8 inches)	66%	extreme
October Weather	20°C (68°F)	76 mm (3.0 inches)	73%	very high
November Weather	14°C (58°F)	25 mm (1.0 inches)	84%	high
December Weather	11°C (53°F)	34 mm (1.3 inches)	87%	moderate