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March Weather in Heppner, United States

Last updated: June 24, 2025

In March, the average temperature in Heppner, United States hovers around 4°C (39°F). This month can see minimum temperatures dipping as low as -14°C (8°F), while the mercury may rise to a maximum of 19°C (66°F). Expect 69 mm (2.7 in) of precipitation spread over approximately 14 days, and prepare for a humidity level of around 85%, making the air feel quite moist.

March Temperature in Heppner

In March in Heppner, the average temperature is 4°C (39°F), with maximums reaching 19°C (66°F) and minimums dropping to as low as -14°C (8°F). Be prepared for a wide range of temperatures when planning your travel to Heppner during this month.

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

The chart illustrates March temperature patterns in Heppner, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Heppner, March typically has an average temperature of 4°C (39°F), with highs reaching up to 19°C (66°F) and lows dropping to around -14°C (8°F).
JanFebMarAprMayJunJulAugSepOctNovDec333339465463717161483933
Data source: Temperature data for Heppner 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 Heppner

In Heppner in March, the precipitation amount is 69 mm (2.7 in) over the course of 14 days.

March Precipitation Trends in Heppner

The chart displays monthly precipitation patterns in Heppner, 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 Heppner, March typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec60856969472721027466561
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Heppner

In Heppner in March, humidity is 85%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable and requiring extra layers to ward off the cold and moisture.

March Average Humidity in Heppner

This chart illustrates the average monthly humidity levels in Heppner, 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 Heppner is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%85%83%77%81%77%60%58%75%85%87%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Heppner

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

Maximum UV Index Levels in Heppner for March

The chart shows the monthly maximum UV Index (UVI) for Heppner 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 Heppner typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098532
Data source: Heppner 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 Heppner Compares to Other Months

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

This table compares monthly weather conditions in Heppner, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)60 mm (2.3 inches)86%moderate
February Weather0°C (33°F)85 mm (3.3 inches)86%moderate
March Weather4°C (39°F)69 mm (2.7 inches)85%high
April Weather8°C (46°F)69 mm (2.7 inches)83%very high
May Weather12°C (55°F)47 mm (1.8 inches)77%very high
June Weather17°C (63°F)27 mm (1.1 inches)81%very high
July Weather22°C (72°F)2 mm (0.1 inches)76%very high
August Weather22°C (71°F)10 mm (0.4 inches)60%very high
September Weather16°C (61°F)27 mm (1.1 inches)58%very high
October Weather9°C (48°F)46 mm (1.8 inches)75%moderate
November Weather4°C (39°F)65 mm (2.5 inches)85%moderate
December Weather0°C (33°F)61 mm (2.4 inches)87%low

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