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March Weather in Boise City, United States

Last updated: June 24, 2025

In Boise City, United States, the average temperature in March is a brisk 9°C (49°F). Expect dramatic fluctuations, with temperatures ranging from a chilly -14°C (7°F) to a warm 32°C (89°F). During this month, precipitation totals around 36 mm (1.4 in), typically spread across 4 days, and the average humidity hovers at 64%.

March Temperature in Boise City

In March in Boise City, the average temperature is 9°C (49°F). Maximums can reach 32°C (89°F), while minimums can drop as low as -14°C (7°F). Be prepared for a wide range of temperatures when planning your trip, so pack accordingly!

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

The chart illustrates March temperature patterns in Boise City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Boise City, March typically has an average temperature of 9°C (49°F), with highs reaching up to 32°C (89°F) and lows dropping to around -14°C (7°F).
JanFebMarAprMayJunJulAugSepOctNovDec363748556475797671564739
Data source: Temperature data for Boise City generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Boise City

In Boise City in March, the precipitation amount is 36 mm (1.4 in) over the course of 4 days.

March Precipitation Trends in Boise City

The chart displays monthly precipitation patterns in Boise City, 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 City, March typically receives around 36 mm (1.4 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec16113641603744553234715
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Boise City

In Boise City in March humidity is 64%. With an average temperature of 9°C (49°F), this humidity feels like a cool, brisk embrace, making travel invigorating yet slightly damp, urging explorers to dress in layers to enjoy the fresh air while avoiding any chill that lingers in the atmosphere.

March Average Humidity in Boise City

This chart illustrates the average monthly humidity levels in Boise City, 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 City is approximately 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%76%64%61%71%75%75%80%80%78%76%78%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Boise City

In Boise City in March, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Boise City.

Maximum UV Index Levels in Boise City for March

The chart shows the monthly maximum UV Index (UVI) for Boise City 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 City typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101112121110753
Data source: Boise City 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 City Compares to Other Months

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

This table compares monthly weather conditions in Boise City, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)16 mm (0.6 inches)73%moderate
February Weather3°C (37°F)11 mm (0.4 inches)76%high
March Weather9°C (49°F)36 mm (1.4 inches)64%very high
April Weather13°C (55°F)41 mm (1.6 inches)61%very high
May Weather18°C (64°F)60 mm (2.4 inches)71%extreme
June Weather24°C (76°F)37 mm (1.5 inches)75%extreme
July Weather26°C (79°F)44 mm (1.7 inches)75%extreme
August Weather25°C (77°F)55 mm (2.2 inches)80%extreme
September Weather22°C (71°F)32 mm (1.3 inches)80%very high
October Weather13°C (56°F)34 mm (1.3 inches)78%high
November Weather8°C (47°F)7 mm (0.3 inches)76%moderate
December Weather4°C (39°F)15 mm (0.6 inches)78%moderate

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