January Weather in Summertown, United States

Last updated: June 24, 2025

In January, the average temperature in Summertown, United States hovers around 5°C (42°F), with a minimum plunge to -15°C (6°F) and a maximum reaching up to 23°C (74°F). During this month, expect about 110 mm (4.3 in) of precipitation spread over 9 days, contributing to an average humidity of 87%. Stay prepared for a mix of chilly and mild weather!

January Temperature in Summertown

In January in Summertown, the average temperature is 5°C (42°F). Maximum temperatures can reach 23°C (74°F), while minimum temperatures can drop as low as -15°C (6°F). This wide range makes it essential to pack appropriately for varying weather conditions when traveling during this time.

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

The chart illustrates January temperature patterns in Summertown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Summertown, January typically has an average temperature of 5°C (42°F), with highs reaching up to 23°C (74°F) and lows dropping to around -15°C (6°F).

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

January Precipitation in Summertown

In Summertown in January, the precipitation amount is 110 mm (4.3 in) over the course of 9 days.

January Precipitation Trends in Summertown

The chart displays monthly precipitation patterns in Summertown, 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 Summertown, January typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 9 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 Summertown

In Summertown in January humidity is 87%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and travel less inviting as the air becomes heavy and oppressive.

January Average Humidity in Summertown

This chart illustrates the average monthly humidity levels in Summertown, 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 Summertown is approximately 87%, 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 Summertown

In Summertown 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 Summertown for better planning.

Maximum UV Index Levels in Summertown for January

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

Data source: Summertown 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 Summertown Compares to Other Months

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

This table compares monthly weather conditions in Summertown, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (42°F)	110 mm (4.3 inches)	87%	moderate
February Weather	8°C (46°F)	175 mm (6.9 inches)	87%	high
March Weather	12°C (54°F)	172 mm (6.8 inches)	85%	high
April Weather	15°C (60°F)	163 mm (6.4 inches)	82%	very high
May Weather	21°C (70°F)	113 mm (4.5 inches)	83%	very high
June Weather	25°C (77°F)	128 mm (5.0 inches)	82%	extreme
July Weather	26°C (80°F)	120 mm (4.7 inches)	78%	extreme
August Weather	25°C (78°F)	128 mm (5.0 inches)	67%	very high
September Weather	23°C (74°F)	118 mm (4.7 inches)	64%	very high
October Weather	17°C (64°F)	117 mm (4.6 inches)	74%	high
November Weather	9°C (49°F)	74 mm (2.9 inches)	87%	moderate
December Weather	8°C (46°F)	147 mm (5.8 inches)	88%	moderate