December Weather in Simpson, United States

Last updated: June 24, 2025

In Simpson, United States, the average temperature in December typically hovers around 12°C (54°F). However, be prepared for a range, as the minimum can dip to -2°C (28°F), while the maximum can soar up to 28°C (83°F). Expect a precipitation amount of 136 mm (5.3 in) over 10 days, accompanied by a notable average humidity of 88%.

December Temperature in Simpson

In December in Simpson, the average temperature is 12°C (54°F), with maximums reaching up to 28°C (83°F) and minimums dropping as low as -2°C (28°F). Be prepared for a wide range of temperatures when traveling to Simpson during this time.

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

The chart illustrates December temperature patterns in Simpson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Simpson, December typically has an average temperature of 12°C (54°F), with highs reaching up to 28°C (83°F) and lows dropping to around -2°C (28°F).

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

December Precipitation in Simpson

In Simpson in December, the total precipitation amount is 136 mm (5.3 in) over the course of 10 days.

December Precipitation Trends in Simpson

The chart displays monthly precipitation patterns in Simpson, 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 Simpson, December typically receives around 136 mm (5.3 inches) of precipitation spread over approximately 10 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 Simpson

In Simpson in December, humidity is 88%. With an average temperature of 12°C (54°F), this humidity feels like a thick, damp blanket, making traveling a bit uncomfortable as the air clings to your skin, causing you to sweat even in cooler weather.

December Average Humidity in Simpson

This chart illustrates the average monthly humidity levels in Simpson, 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 Simpson is approximately 88%, 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 Simpson

In Simpson in December, 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 Simpson for better planning.

Maximum UV Index Levels in Simpson for December

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

Data source: Simpson 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 Simpson Compares to Other Months

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

This table compares monthly weather conditions in Simpson, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (51°F)	109 mm (4.3 inches)	81%	moderate
February Weather	13°C (55°F)	136 mm (5.3 inches)	81%	high
March Weather	17°C (63°F)	95 mm (3.8 inches)	79%	very high
April Weather	19°C (67°F)	161 mm (6.3 inches)	80%	extreme
May Weather	24°C (75°F)	187 mm (7.3 inches)	81%	extreme
June Weather	27°C (80°F)	129 mm (5.1 inches)	76%	extreme
July Weather	28°C (82°F)	138 mm (5.4 inches)	73%	extreme
August Weather	28°C (82°F)	161 mm (6.3 inches)	71%	extreme
September Weather	26°C (79°F)	135 mm (5.3 inches)	72%	very high
October Weather	21°C (70°F)	126 mm (5.0 inches)	73%	very high
November Weather	14°C (58°F)	66 mm (2.6 inches)	83%	high
December Weather	12°C (54°F)	136 mm (5.3 inches)	88%	moderate