March Weather in Spearfish, United States

Last updated: June 24, 2025

In Spearfish, United States, the average temperature in March hovers around 2°C (35°F). Expect temperature extremes, with minimums dipping to a brisk -26°C (-14°F) and maximums reaching a mild 21°C (69°F). During this month, precipitation totals about 39 mm (1.5 in) over 9 days, while humidity levels maintain a comfortable 70%.

March Temperature in Spearfish

In March in Spearfish, the average temperature is 2°C (35°F). The maximum can reach 21°C (69°F), while the minimum can be as low as -26°C (-14°F). Travelers should be prepared for a wide range of temperatures during this time, ensuring they pack layers to stay comfortable.

March Weather in Spearfish: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Spearfish, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Spearfish, March typically has an average temperature of 2°C (35°F), with highs reaching up to 21°C (69°F) and lows dropping to around -26°C (-14°F).

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

March Precipitation in Spearfish

In Spearfish in March, the precipitation amount is 39 mm (1.5 in) spread over 9 days.

March Precipitation Trends in Spearfish

The chart displays monthly precipitation patterns in Spearfish, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Spearfish, March typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 9 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in Spearfish

In Spearfish in March, humidity is 70%. With an average temperature of 2°C (35°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities brisk and invigorating but also requiring extra layers to stay comfortable while traveling.

March Average Humidity in Spearfish

This chart illustrates the average monthly humidity levels in Spearfish, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Spearfish is approximately 70%, offering insight into how humid the weather typically is during this month.

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

March UV Index in Spearfish

In Spearfish in March, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Spearfish, you can refer to this Hourly UV Index in Spearfish.

Maximum UV Index Levels in Spearfish for March

The chart shows the monthly maximum UV Index (UVI) for Spearfish in March, 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 March, the maximum UV index in Spearfish typically reaches 6, which falls under the high exposure category.

Data source: Spearfish March 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 March Weather in Spearfish Compares to Other Months

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

This table compares monthly weather conditions in Spearfish, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (26°F)	22 mm (0.8 inches)	77%	moderate
February Weather	-6°C (21°F)	33 mm (1.3 inches)	80%	moderate
March Weather	2°C (35°F)	39 mm (1.5 inches)	70%	high
April Weather	5°C (41°F)	74 mm (2.9 inches)	70%	very high
May Weather	11°C (52°F)	98 mm (3.9 inches)	76%	very high
June Weather	19°C (66°F)	65 mm (2.6 inches)	84%	extreme
July Weather	22°C (72°F)	88 mm (3.4 inches)	85%	extreme
August Weather	20°C (69°F)	58 mm (2.3 inches)	84%	very high
September Weather	16°C (61°F)	43 mm (1.7 inches)	77%	very high
October Weather	7°C (44°F)	65 mm (2.5 inches)	73%	moderate
November Weather	3°C (37°F)	21 mm (0.8 inches)	74%	moderate
December Weather	-1°C (30°F)	31 mm (1.2 inches)	79%	low