March Weather in Boise, United States

Last updated: June 24, 2025

In Boise, United States, the average temperature in March hovers around 8°C (46°F), creating a chilly yet manageable climate. Temperatures can dip as low as -11°C (12°F) or soar up to 26°C (80°F), ensuring varied weather experiences. With an average precipitation of 38 mm (1.5 in) over 9 days and humidity levels around 85%, don’t forget your umbrella and enjoy the refreshing atmosphere!

March Temperature in Boise

In March in Boise, the average temperature is 8°C (46°F), with maximums reaching 26°C (80°F) and minimums dropping to as low as -11°C (12°F). This variation in temperature makes it essential for travelers to pack appropriately for both warm and cold weather activities.

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

The chart illustrates March temperature patterns in Boise, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Boise, March typically has an average temperature of 8°C (46°F), with highs reaching up to 26°C (80°F) and lows dropping to around -11°C (12°F).

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

March Precipitation in Boise

In Boise in March, the total precipitation amount is 38 mm (1.5 in) spread over a duration of 9 days.

March Precipitation Trends in Boise

The chart displays monthly precipitation patterns in Boise, 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 Boise, March typically receives around 38 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 Boise

In Boise in March humidity is 85%. With an average temperature of 8°C (46°F), this humidity feels like a cold, damp embrace that can leave travelers feeling chilled and uncomfortable, making outdoor exploration less appealing and encouraging the search for cozy indoor activities instead.

March Average Humidity in Boise

This chart illustrates the average monthly humidity levels in Boise, 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 Boise is approximately 85%, 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 Boise

In Boise 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 Boise, you can refer to this Hourly UV Index in Boise.

Maximum UV Index Levels in Boise for March

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

Data source: Boise 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 Boise Compares to Other Months

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

This table compares monthly weather conditions in Boise, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (33°F)	49 mm (1.9 inches)	88%	moderate
February Weather	2°C (36°F)	50 mm (2.0 inches)	89%	moderate
March Weather	8°C (46°F)	38 mm (1.5 inches)	85%	high
April Weather	11°C (52°F)	36 mm (1.4 inches)	79%	very high
May Weather	16°C (61°F)	39 mm (1.5 inches)	71%	very high
June Weather	21°C (71°F)	21 mm (0.8 inches)	71%	extreme
July Weather	27°C (81°F)	1 mm (0.0 inches)	66%	extreme
August Weather	26°C (78°F)	8 mm (0.3 inches)	50%	very high
September Weather	20°C (68°F)	10 mm (0.4 inches)	48%	very high
October Weather	11°C (53°F)	22 mm (0.9 inches)	65%	high
November Weather	6°C (43°F)	32 mm (1.3 inches)	84%	moderate
December Weather	1°C (34°F)	40 mm (1.6 inches)	87%	low