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May Weather in Montana, Bulgaria

Last updated: August 22, 2025

In Montana, Bulgaria during the month of May, the average temperature hovers around 17°C (63°F). Expect a minimum of 4°C (39°F) and a maximum of 31°C (89°F), showcasing the variability of the season. With an average precipitation of 77 mm (3.0 in) spread across 13 days, it's advisable to keep an umbrella handy. The atmosphere is quite humid, with an average humidity level of 73%, adding to the unique charm of the locale.

May Temperature in Montana

In May in Montana, the average temperature is 17°C (63°F). Maximum temperatures can reach 31°C (89°F), while the minimum can drop to as low as 4°C (39°F). Be prepared for a range of weather conditions and pack accordingly for your travels.

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

The chart illustrates May temperature patterns in Montana, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Montana, May typically has an average temperature of 17°C (63°F), with highs reaching up to 31°C (89°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec333944546370747567554638
Data source: Temperature data for Montana 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 Montana

In Montana in May, the precipitation amount is 77 mm (3.0 in) spread over a total of 13 days.

May Precipitation Trends in Montana

The chart displays monthly precipitation patterns in Montana, 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 Montana, May typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec555388597780782723644963
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Montana

In Montana in May humidity is 73%. With an average temperature of 17°C (63°F), this humidity feels like a warm embrace, making it ideal for leisurely strolling through vibrant markets or exploring outdoor attractions, though travelers may want to stay hydrated and take breaks in shaded areas to fully enjoy the atmosphere.

May Average Humidity in Montana

This chart illustrates the average monthly humidity levels in Montana, 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 Montana is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%85%83%71%73%67%68%50%59%79%87%89%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Montana

In Montana in May, 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 Montana.

Maximum UV Index Levels in Montana for May

The chart shows the monthly maximum UV Index (UVI) for Montana 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 Montana typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246789987532
Data source: Montana 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 Montana Compares to Other Months

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

This table compares monthly weather conditions in Montana, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)55 mm (2.2 inches)89%low
February Weather4°C (39°F)53 mm (2.1 inches)85%moderate
March Weather7°C (45°F)88 mm (3.5 inches)83%high
April Weather12°C (54°F)59 mm (2.3 inches)71%high
May Weather17°C (63°F)77 mm (3.0 inches)73%very high
June Weather21°C (71°F)80 mm (3.2 inches)67%very high
July Weather24°C (75°F)78 mm (3.1 inches)68%very high
August Weather24°C (76°F)27 mm (1.1 inches)50%very high
September Weather20°C (67°F)23 mm (0.9 inches)59%high
October Weather13°C (56°F)64 mm (2.5 inches)79%moderate
November Weather8°C (46°F)49 mm (1.9 inches)87%moderate
December Weather3°C (38°F)63 mm (2.5 inches)89%low

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