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May Weather in Littleton, United States

Last updated: June 24, 2025

In May, the average temperature in Littleton, United States is a pleasant 21°C (70°F). However, temperatures can swing from a crisp 3°C (38°F) to a sweltering 36°C (97°F). This month sees 124 mm (4.9 in) of precipitation across approximately 11 days, contributing to an average humidity of 82%—perfect for those who relish a lush, vibrant atmosphere!

May Temperature in Littleton

In May in Littleton, the average temperature is 21°C (70°F). Maximums can reach 36°C (97°F), while minimums can drop as low as 3°C (38°F). This variation makes Littleton a destination for travelers seeking both warm days and refreshing cooler evenings.

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

The chart illustrates May temperature patterns in Littleton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Littleton, May typically has an average temperature of 21°C (70°F), with highs reaching up to 36°C (97°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec424752616976807874655146
Data source: Temperature data for Littleton 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 Littleton

In Littleton in May, the precipitation amount is 124 mm (4.9 in) over the course of 11 days.

May Precipitation Trends in Littleton

The chart displays monthly precipitation patterns in Littleton, 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 Littleton, May typically receives around 124 mm (4.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec8911086104124128116151115968097
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Littleton

In Littleton in May, humidity is 82%. With an average temperature of 21°C (70°F), this humidity feels like a warm, sticky embrace that can quickly lead to discomfort for travelers, making outdoor activities less enjoyable and requiring frequent breaks for hydration.

May Average Humidity in Littleton

This chart illustrates the average monthly humidity levels in Littleton, 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 Littleton is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%84%82%83%83%79%77%75%81%87%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Littleton

In Littleton 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 Littleton.

Maximum UV Index Levels in Littleton for May

The chart shows the monthly maximum UV Index (UVI) for Littleton 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 Littleton typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4689101111109853
Data source: Littleton 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 Littleton Compares to Other Months

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

This table compares monthly weather conditions in Littleton, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (42°F)89 mm (3.5 inches)84%moderate
February Weather8°C (47°F)110 mm (4.3 inches)84%high
March Weather11°C (52°F)86 mm (3.4 inches)84%very high
April Weather16°C (61°F)104 mm (4.1 inches)82%very high
May Weather21°C (70°F)124 mm (4.9 inches)82%very high
June Weather24°C (76°F)128 mm (5.0 inches)83%extreme
July Weather27°C (80°F)116 mm (4.6 inches)79%extreme
August Weather26°C (78°F)151 mm (5.9 inches)77%very high
September Weather23°C (74°F)115 mm (4.5 inches)75%very high
October Weather18°C (65°F)96 mm (3.8 inches)81%very high
November Weather10°C (51°F)80 mm (3.2 inches)87%moderate
December Weather8°C (46°F)97 mm (3.8 inches)85%moderate

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