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May Weather in Tarkio, United States

Last updated: June 24, 2025

In May, the average temperature in Tarkio, United States hovers around 18°C (65°F), with a minimum dipping to 3°C (37°F) and soaring to a maximum of 37°C (99°F). Expect 154 mm (6.1 in) of precipitation spread over 14 days, contributing to an average humidity of 78%. Stay prepared for a mix of mild and warm days while enjoying the refreshing atmosphere!

May Temperature in Tarkio

In May in Tarkio, the average temperature is 18°C (65°F). Maximums can reach up to 37°C (99°F), while minimums can drop as low as 3°C (37°F). Travelers should be prepared for a wide range of temperatures, so layering clothing is advisable.

May Weather in Tarkio: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Tarkio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tarkio, May typically has an average temperature of 18°C (65°F), with highs reaching up to 37°C (99°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec272843526477797570544134
Data source: Temperature data for Tarkio 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 Tarkio

In Tarkio in May, the total precipitation amount is 154 mm (6.1 in) over a period of 14 days.

May Precipitation Trends in Tarkio

The chart displays monthly precipitation patterns in Tarkio, 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 Tarkio, May typically receives around 154 mm (6.1 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec36329377154118105116971423434
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Tarkio

In Tarkio in May, humidity is 78%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket, making travel quite muggy and potentially uncomfortable, as it can leave you feeling sticky and fatigued more quickly than usual.

May Average Humidity in Tarkio

This chart illustrates the average monthly humidity levels in Tarkio, 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 Tarkio is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%73%75%78%82%83%81%75%75%82%83%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Tarkio

In Tarkio in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Tarkio.

Maximum UV Index Levels in Tarkio for May

The chart shows the monthly maximum UV Index (UVI) for Tarkio 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 Tarkio typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Tarkio 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 Tarkio Compares to Other Months

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

This table compares monthly weather conditions in Tarkio, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)36 mm (1.4 inches)76%moderate
February Weather-2°C (28°F)32 mm (1.3 inches)80%moderate
March Weather6°C (44°F)93 mm (3.7 inches)73%high
April Weather11°C (52°F)77 mm (3.0 inches)74%very high
May Weather18°C (65°F)154 mm (6.1 inches)78%very high
June Weather25°C (77°F)118 mm (4.6 inches)82%extreme
July Weather26°C (79°F)105 mm (4.1 inches)83%very high
August Weather24°C (76°F)116 mm (4.6 inches)80%very high
September Weather21°C (71°F)97 mm (3.8 inches)75%very high
October Weather12°C (55°F)142 mm (5.6 inches)75%high
November Weather5°C (42°F)34 mm (1.4 inches)82%moderate
December Weather1°C (34°F)34 mm (1.3 inches)83%moderate

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