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May Weather in North Spearfish, United States

Last updated: June 24, 2025

In May, the average temperature in North Spearfish, United States hovers around 11°C (51°F), offering a pleasant climate for exploration. However, be prepared for a wide range of temperatures, with minimums plunging to -5°C (24°F) and maximums reaching up to 31°C (89°F). Expect about 100 mm (3.9 in) of precipitation spread over 16 days, contributing to an average humidity of 76%—ideal for those who appreciate a lush, vibrant atmosphere!

May Temperature in North Spearfish

In May in North Spearfish, the average temperature is 11°C (51°F). Maximums can reach 31°C (89°F), and minimums can drop as low as -5°C (24°F). Be prepared for both warm days and chilly nights if you're traveling during this time.

May Weather in North Spearfish: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in North Spearfish, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In North Spearfish, May typically has an average temperature of 11°C (51°F), with highs reaching up to 31°C (89°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec262135395165716860433629
Data source: Temperature data for North Spearfish 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 North Spearfish

In North Spearfish in May, the total precipitation amount reaches 100 mm (3.9 in) over the course of 16 days.

May Precipitation Trends in North Spearfish

The chart displays monthly precipitation patterns in North Spearfish, 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 North Spearfish, May typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec2335407710066936046652332
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in North Spearfish

In North Spearfish in May, humidity is 76%. With an average temperature of 11°C (51°F), this humidity feels like a damp chill that settles into your bones, making outdoor activities uncomfortable and potentially discouraging for traveling.

May Average Humidity in North Spearfish

This chart illustrates the average monthly humidity levels in North Spearfish, 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 North Spearfish is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%80%70%70%76%84%85%85%77%73%74%79%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in North Spearfish

In North Spearfish in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in North Spearfish.

Maximum UV Index Levels in North Spearfish for May

The chart shows the monthly maximum UV Index (UVI) for North Spearfish 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 North Spearfish typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356991111108532
Data source: North Spearfish 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 North Spearfish Compares to Other Months

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

This table compares monthly weather conditions in North Spearfish, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)23 mm (0.9 inches)77%moderate
February Weather-6°C (21°F)35 mm (1.4 inches)80%moderate
March Weather1°C (35°F)40 mm (1.6 inches)70%high
April Weather4°C (40°F)77 mm (3.0 inches)70%very high
May Weather11°C (51°F)100 mm (3.9 inches)76%very high
June Weather18°C (65°F)66 mm (2.6 inches)84%extreme
July Weather22°C (71°F)93 mm (3.7 inches)85%extreme
August Weather20°C (68°F)60 mm (2.4 inches)84%very high
September Weather15°C (60°F)46 mm (1.8 inches)77%very high
October Weather6°C (43°F)65 mm (2.6 inches)73%moderate
November Weather2°C (36°F)23 mm (0.9 inches)74%moderate
December Weather-2°C (29°F)32 mm (1.3 inches)79%low

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