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May Weather in Grannis, United States

Last updated: June 24, 2025

In Grannis, United States, the average temperature in May hovers around 21°C (71°F). Expect a range that can dip to a cool 7°C (44°F) and soar to a hot 35°C (95°F). During this month, you can anticipate approximately 195 mm (7.7 in) of precipitation spread over 13 days, contributing to an average humidity of 82%.

May Temperature in Grannis

In May in Grannis, the average temperature is 21°C (71°F). Maximum temperatures can reach 35°C (95°F), while minimums can drop as low as 7°C (44°F). This makes Grannis a great destination for travelers who enjoy a mix of warm days and cooler evenings.

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

The chart illustrates May temperature patterns in Grannis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grannis, May typically has an average temperature of 21°C (71°F), with highs reaching up to 35°C (95°F) and lows dropping to around 7°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec434656617078818076645248
Data source: Temperature data for Grannis 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 Grannis

In Grannis in May, the precipitation amount is 195 mm (7.7 in) spread over 13 days, highlighting a significant level of rainfall for the region.

May Precipitation Trends in Grannis

The chart displays monthly precipitation patterns in Grannis, 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 Grannis, May typically receives around 195 mm (7.7 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec1071591611941951051021087113183137
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Grannis

In Grannis in May humidity is 82%. With an average temperature of 21°C (71°F), this humidity feels like a warm, muggy embrace that can make traveling feel sticky and exhausting, urging you to seek shade and hydration as you explore the vibrant surroundings.

May Average Humidity in Grannis

This chart illustrates the average monthly humidity levels in Grannis, 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 Grannis is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%77%78%82%81%75%61%59%69%82%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Grannis

In Grannis 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 Grannis.

Maximum UV Index Levels in Grannis for May

The chart shows the monthly maximum UV Index (UVI) for Grannis 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 Grannis typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010854
Data source: Grannis 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 Grannis Compares to Other Months

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

This table compares monthly weather conditions in Grannis, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)107 mm (4.2 inches)82%moderate
February Weather8°C (46°F)159 mm (6.3 inches)79%high
March Weather13°C (56°F)161 mm (6.4 inches)77%very high
April Weather16°C (61°F)194 mm (7.6 inches)78%very high
May Weather21°C (71°F)195 mm (7.7 inches)82%extreme
June Weather26°C (78°F)105 mm (4.1 inches)81%extreme
July Weather27°C (81°F)102 mm (4.0 inches)75%extreme
August Weather27°C (80°F)108 mm (4.3 inches)61%very high
September Weather24°C (76°F)71 mm (2.8 inches)59%very high
October Weather18°C (64°F)131 mm (5.1 inches)69%very high
November Weather11°C (52°F)83 mm (3.3 inches)82%moderate
December Weather9°C (48°F)137 mm (5.4 inches)87%moderate

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