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May Weather in Cave Junction, United States

Last updated: June 24, 2025

In May, the average temperature in Cave Junction, United States hovers around 13°C (55°F). Expect a range of -2°C (28°F) to a warm 31°C (88°F), showcasing the climate’s variability. With 66 mm (2.6 in) of precipitation over 7 days and an average humidity of 83%, be prepared for a mix of weather conditions this month!

May Temperature in Cave Junction

In May in Cave Junction, the average temperature is 13°C (55°F). Maximums can reach 31°C (88°F) and minimums can drop as low as -2°C (28°F). This makes it essential to pack for both warm days and chilly nights when traveling to Cave Junction during this time.

May Weather in Cave Junction: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Cave Junction, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cave Junction, May typically has an average temperature of 13°C (55°F), with highs reaching up to 31°C (88°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec393942485563717063524438
Data source: Temperature data for Cave Junction 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.

May Precipitation in Cave Junction

In Cave Junction in May, the precipitation amount is 66 mm (2.6 in) over a period of 7 days.

May Precipitation Trends in Cave Junction

The chart displays monthly precipitation patterns in Cave Junction, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Cave Junction, May typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec2462461791366630254571168199
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Cave Junction

In Cave Junction in May humidity is 83%. With an average temperature of 13°C (55°F), this humidity feels like a damp embrace, often leaving travelers feeling slightly sticky and in need of frequent breaks in the shade.

May Average Humidity in Cave Junction

This chart illustrates the average monthly humidity levels in Cave Junction, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Cave Junction is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%86%83%83%83%78%67%66%77%87%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Cave Junction

In Cave Junction in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Cave Junction.

Maximum UV Index Levels in Cave Junction for May

The chart shows the monthly maximum UV Index (UVI) for Cave Junction in May, 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 May, the maximum UV index in Cave Junction typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468111110108642
Data source: Cave Junction May 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 May Weather in Cave Junction Compares to Other Months

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

This table compares monthly weather conditions in Cave Junction, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)246 mm (9.7 inches)84%moderate
February Weather4°C (39°F)246 mm (9.7 inches)85%moderate
March Weather5°C (42°F)179 mm (7.1 inches)86%high
April Weather9°C (48°F)136 mm (5.4 inches)83%very high
May Weather13°C (55°F)66 mm (2.6 inches)83%extreme
June Weather17°C (63°F)30 mm (1.2 inches)83%extreme
July Weather21°C (71°F)2 mm (0.1 inches)78%very high
August Weather21°C (70°F)5 mm (0.2 inches)67%very high
September Weather17°C (63°F)45 mm (1.8 inches)66%very high
October Weather11°C (53°F)71 mm (2.8 inches)77%high
November Weather7°C (45°F)168 mm (6.6 inches)87%moderate
December Weather3°C (38°F)198 mm (7.8 inches)87%low

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