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March Weather in Great Falls, United States

Last updated: June 24, 2025

In March, the average temperature in Great Falls, United States hovers around 1°C (34°F). Expect a chilly range, with minimums dipping as low as -35°C (-30°F) and maximums reaching a surprising 22°C (72°F). Prepare for some moisture, as precipitation totals around 25 mm (1.0 in), spread over approximately 7 days. With an average humidity level of 83%, it's a month that will certainly keep you on your toes!

March Temperature in Great Falls

In March in Great Falls, the average temperature is 1°C (34°F). The maximum can reach 22°C (72°F) and the minimum can be as low as -35°C (-30°F). Be prepared for a wide range of temperatures while traveling, so pack accordingly to enjoy your stay!

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

The chart illustrates March temperature patterns in Great Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Great Falls, March typically has an average temperature of 1°C (34°F), with highs reaching up to 22°C (72°F) and lows dropping to around -35°C (-30°F).
JanFebMarAprMayJunJulAugSepOctNovDec271934425464737059453729
Data source: Temperature data for Great 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 Great Falls

In Great Falls in March, the precipitation amount is 25 mm (1.0 in) over the course of 7 days.

March Precipitation Trends in Great Falls

The chart displays monthly precipitation patterns in Great 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 Great Falls, March typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec164125606571122336383228
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Great Falls

In Great Falls in March, humidity is 83%. With an average temperature of 1°C (34°F), this humidity feels like a chilling embrace, making travel uncomfortable as the damp cold seeps into your bones, adding an extra layer of heaviness to the air that can leave you feeling sluggish and fatigued.

March Average Humidity in Great Falls

This chart illustrates the average monthly humidity levels in Great 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 Great Falls is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%88%83%78%76%78%77%71%68%72%84%91%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Great Falls

In Great Falls in March, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Great Falls.

Maximum UV Index Levels in Great Falls for March

The chart shows the monthly maximum UV Index (UVI) for Great 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 Great Falls typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Great 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 Great Falls Compares to Other Months

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

This table compares monthly weather conditions in Great Falls, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)16 mm (0.6 inches)87%low
February Weather-7°C (20°F)41 mm (1.6 inches)88%moderate
March Weather1°C (34°F)25 mm (1.0 inches)83%moderate
April Weather6°C (43°F)60 mm (2.4 inches)78%high
May Weather12°C (55°F)65 mm (2.5 inches)76%very high
June Weather18°C (64°F)71 mm (2.8 inches)78%very high
July Weather23°C (73°F)12 mm (0.5 inches)77%very high
August Weather21°C (70°F)23 mm (0.9 inches)71%very high
September Weather15°C (60°F)36 mm (1.4 inches)68%high
October Weather7°C (45°F)38 mm (1.5 inches)72%moderate
November Weather3°C (37°F)32 mm (1.3 inches)84%moderate
December Weather-2°C (29°F)27 mm (1.1 inches)90%low

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