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March Weather in Idaho Falls, United States

Last updated: June 24, 2025

In March, the average temperature in Idaho Falls, United States hovers around 3°C (37°F), with a minimum reaching as low as -19°C (-2°F) and a maximum soaring to 21°C (69°F). Expect 43 mm (1.7 in) of precipitation spread over about 10 days, contributing to a high average humidity of 90%.

March Temperature in Idaho Falls

In March in Idaho Falls, the average temperature is 3°C (37°F), with maximums reaching up to 21°C (69°F) and minimums plunging as low as -19°C (-2°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack layers for both warmer days and chilly nights.

March Weather in Idaho Falls: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Idaho Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Idaho Falls, March typically has an average temperature of 3°C (37°F), with highs reaching up to 21°C (69°F) and lows dropping to around -19°C (-2°F).
JanFebMarAprMayJunJulAugSepOctNovDec242737455464737161453526
Data source: Temperature data for Idaho Falls 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 Idaho Falls

In Idaho Falls in March, the precipitation amount is 43 mm (1.7 in) over a span of 10 days.

March Precipitation Trends in Idaho Falls

The chart displays monthly precipitation patterns in Idaho Falls, 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 Idaho Falls, March typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec404843555831111627393241
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Idaho Falls

In Idaho Falls in March, humidity is 90%. With an average temperature of 3°C (37°F), this humidity feels like a heavy blanket wrapped around you, making travel feel cumbersome and draining, as the dampness clings to your skin and the cold bites through your layers.

March Average Humidity in Idaho Falls

This chart illustrates the average monthly humidity levels in Idaho Falls, 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 Idaho Falls is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%95%90%81%71%64%59%49%52%69%86%91%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Idaho Falls

In Idaho Falls in March, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Idaho Falls.

Maximum UV Index Levels in Idaho Falls for March

The chart shows the monthly maximum UV Index (UVI) for Idaho Falls 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 Idaho Falls typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3578101111109643
Data source: Idaho Falls 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 Idaho Falls Compares to Other Months

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

This table compares monthly weather conditions in Idaho Falls, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)40 mm (1.6 inches)95%moderate
February Weather-3°C (27°F)48 mm (1.9 inches)95%moderate
March Weather3°C (37°F)43 mm (1.7 inches)90%high
April Weather7°C (45°F)55 mm (2.2 inches)81%very high
May Weather12°C (54°F)58 mm (2.3 inches)71%very high
June Weather18°C (65°F)31 mm (1.2 inches)64%extreme
July Weather23°C (74°F)11 mm (0.4 inches)59%extreme
August Weather21°C (71°F)16 mm (0.6 inches)49%very high
September Weather16°C (61°F)26 mm (1.0 inches)52%very high
October Weather7°C (45°F)39 mm (1.5 inches)69%high
November Weather2°C (36°F)32 mm (1.3 inches)86%moderate
December Weather-4°C (26°F)41 mm (1.6 inches)91%moderate

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