December Weather in Simla, United States

Last updated: June 24, 2025

In Simla, United States, the average temperature in December hovers around 2°C (35°F). Expect a minimum dip to -13°C (8°F), while the mercury can rise to a pleasant 22°C (72°F). With a modest precipitation amount of 8 mm (0.3 in) over just 2 days, you may want to keep an umbrella handy. The air stays relatively humid, boasting an average of 80% humidity, perfect for a cozy atmosphere.

December Temperature in Simla

In December in Simla, the average temperature is 2°C (35°F). The maximum can reach 22°C (72°F) and the minimum can be as low as -13°C (8°F). It's advisable to pack layered clothing to ensure comfort during your travels.

December Weather in Simla: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Simla, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Simla, December typically has an average temperature of 2°C (35°F), with highs reaching up to 22°C (72°F) and lows dropping to around -13°C (8°F).

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

December Precipitation in Simla

In Simla in December, the precipitation amount is 8 mm (0.3 in) over the course of 2 days.

December Precipitation Trends in Simla

The chart displays monthly precipitation patterns in Simla, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Simla, December typically receives around 8 mm (0.3 inches) of precipitation spread over approximately 2 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Simla

In Simla in December humidity is 80%. With an average temperature of 2°C (35°F), this humidity feels like a heavy, damp chill that clings to your skin, making outdoor excursions uncomfortable and your clothes feel soggy, while constantly reminding you to seek shelter indoors to escape the oppressive moisture in the air.

December Average Humidity in Simla

This chart illustrates the average monthly humidity levels in Simla, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Simla is approximately 80%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Simla

In Simla in December, 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 Simla, you can check the information here.

Maximum UV Index Levels in Simla for December

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

Data source: Simla December 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 December Weather in Simla Compares to Other Months

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

This table compares monthly weather conditions in Simla, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	15 mm (0.6 inches)	74%	moderate
February Weather	-1°C (31°F)	17 mm (0.7 inches)	75%	moderate
March Weather	5°C (41°F)	58 mm (2.3 inches)	66%	very high
April Weather	9°C (48°F)	42 mm (1.6 inches)	62%	very high
May Weather	14°C (57°F)	82 mm (3.2 inches)	74%	extreme
June Weather	21°C (70°F)	49 mm (1.9 inches)	76%	extreme
July Weather	23°C (73°F)	59 mm (2.3 inches)	75%	extreme
August Weather	22°C (72°F)	47 mm (1.8 inches)	80%	extreme
September Weather	19°C (67°F)	26 mm (1.0 inches)	79%	very high
October Weather	10°C (50°F)	30 mm (1.2 inches)	77%	high
November Weather	5°C (42°F)	15 mm (0.6 inches)	74%	moderate
December Weather	2°C (35°F)	8 mm (0.3 inches)	80%	moderate