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May Weather in Sycamore, United States

Last updated: June 24, 2025

In May, the average temperature in Sycamore, United States hovers around 17°C (62°F). Temperatures can vary significantly, with minimums dipping to -2°C (30°F) and maximums soaring to 34°C (93°F). Expect moderate rainfall as well, with an average precipitation of 134 mm (5.3 in) over approximately 14 days. The climate is quite humid, with an average humidity level of 81%.

May Temperature in Sycamore

In May in Sycamore, the average temperature is 17°C (62°F). The maximum can reach 34°C (93°F), while the minimum can drop as low as -2°C (30°F). This varied climate makes Sycamore an ideal destination for travelers looking to experience a wide range of temperatures.

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

The chart illustrates May temperature patterns in Sycamore, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sycamore, May typically has an average temperature of 17°C (62°F), with highs reaching up to 34°C (93°F) and lows dropping to around -2°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec293240506271757368574135
Data source: Temperature data for Sycamore 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 Sycamore

In Sycamore in May, the total precipitation amount is 134 mm (5.3 in) over the course of 14 days.

May Precipitation Trends in Sycamore

The chart displays monthly precipitation patterns in Sycamore, 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 Sycamore, May typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec7289971101341311238673939070
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Sycamore

In Sycamore in May, humidity is 81%. With an average temperature of 17°C (62°F), this humidity feels like a warm blanket enveloping you, making outdoor adventures feel sticky and requiring frequent breaks to stay comfortable while exploring.

May Average Humidity in Sycamore

This chart illustrates the average monthly humidity levels in Sycamore, 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 Sycamore is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Sycamore

In Sycamore 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 Sycamore.

Maximum UV Index Levels in Sycamore for May

The chart shows the monthly maximum UV Index (UVI) for Sycamore 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 Sycamore typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Sycamore 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 Sycamore Compares to Other Months

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

This table compares monthly weather conditions in Sycamore, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (30°F)72 mm (2.9 inches)88%moderate
February Weather0°C (32°F)89 mm (3.5 inches)87%moderate
March Weather5°C (41°F)97 mm (3.8 inches)87%high
April Weather10°C (50°F)110 mm (4.3 inches)87%very high
May Weather17°C (62°F)134 mm (5.3 inches)81%very high
June Weather22°C (71°F)131 mm (5.1 inches)82%very high
July Weather24°C (75°F)123 mm (4.8 inches)81%very high
August Weather23°C (73°F)86 mm (3.4 inches)78%very high
September Weather20°C (68°F)73 mm (2.9 inches)78%very high
October Weather14°C (57°F)93 mm (3.7 inches)82%high
November Weather5°C (42°F)90 mm (3.5 inches)89%moderate
December Weather2°C (35°F)70 mm (2.7 inches)86%low

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