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April Weather in Heppner, United States

Last updated: June 24, 2025

In Heppner, United States, the average temperature in April hovers around 8°C (46°F), with a minimum dipping to -6°C (21°F) and a maximum reaching 27°C (82°F). Expect 69 mm (2.7 in) of precipitation spread across 13 days, contributing to an average humidity level of 83%. Prepare for a month of varied weather in this enchanting locale!

April Temperature in Heppner

In April in Heppner, the average temperature is 8°C (46°F). Maximum temperatures can reach 27°C (82°F), while minimums can drop as low as -6°C (21°F). Be prepared for a wide range of temperatures when traveling, so pack accordingly to enjoy your stay!

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

The chart illustrates April 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, April typically has an average temperature of 8°C (46°F), with highs reaching up to 27°C (82°F) and lows dropping to around -6°C (21°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.

April Precipitation in Heppner

In Heppner in April, the precipitation amount is 69 mm (2.7 in) over the course of 13 days.

April Precipitation Trends in Heppner

The chart displays monthly precipitation patterns in Heppner, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Heppner, April typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec60856969472721027466561
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Heppner

In Heppner in April, humidity is 83%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill that seeps into your bones, making even short outings feel quite uncomfortable and prompting travelers to bundle up and seek shelter more frequently.

April Average Humidity in Heppner

This chart illustrates the average monthly humidity levels in Heppner, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Heppner is approximately 83%, 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 April generated using information from the Copernicus Climate Change Service.

April UV Index in Heppner

In Heppner in April, 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 Heppner.

Maximum UV Index Levels in Heppner for April

The chart shows the monthly maximum UV Index (UVI) for Heppner in April, 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 April, the maximum UV index in Heppner typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098532
Data source: Heppner April 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 April 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 April’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 April’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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