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May Weather in Littleton, United States

Last updated: June 24, 2025

In May, the average temperature in Littleton, United States hovers around 12°C (53°F), with a notable range from a chilly -3°C (27°F) to a warm 31°C (87°F). This month also brings about 104 mm (4.1 in) of precipitation spread over 13 days, contributing to an average humidity level of 78%. Prepare for variable weather and pack accordingly!

May Temperature in Littleton

In May in Littleton, the average temperature is 12°C (53°F), with maximums reaching up to 31°C (87°F) and minimums dropping as low as -3°C (27°F). This wide range of temperatures makes it essential for travelers to pack accordingly and prepare for varying weather conditions.

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 12°C (53°F), with highs reaching up to 31°C (87°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec172027405362676558473222
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 104 mm (4.1 in) over the course of 13 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 104 mm (4.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec8685771251041091199169140116100
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 78%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that lingers in the air, making it essential to wear layers while exploring the sights, as the cool moisture can seep into your bones and leave you feeling a bit uncomfortable if not properly dressed for the weather.

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 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%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 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 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2468910997532
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 Weather-8°C (17°F)86 mm (3.4 inches)91%low
February Weather-7°C (20°F)85 mm (3.4 inches)89%moderate
March Weather-3°C (27°F)77 mm (3.0 inches)85%high
April Weather4°C (40°F)125 mm (4.9 inches)84%very high
May Weather12°C (53°F)104 mm (4.1 inches)78%very high
June Weather17°C (62°F)109 mm (4.3 inches)72%very high
July Weather19°C (67°F)119 mm (4.7 inches)75%very high
August Weather18°C (66°F)91 mm (3.6 inches)74%very high
September Weather15°C (58°F)69 mm (2.7 inches)77%high
October Weather8°C (47°F)140 mm (5.5 inches)85%moderate
November Weather0°C (32°F)116 mm (4.6 inches)86%moderate
December Weather-6°C (22°F)100 mm (3.9 inches)85%low

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