May Weather in Syracuse, United States

Last updated: June 24, 2025

In May, the average temperature in Syracuse, United States hovers around 17°C (63°F), with fluctuations between a chilly -1°C (30°F) and a sweltering 36°C (98°F). Expect precipitation to reach approximately 91 mm (3.6 in) over about 11 days, accompanied by a notable average humidity level of 81%.

May Temperature in Syracuse

In May in Syracuse, the average temperature is 17°C (63°F), with a maximum reaching 36°C (98°F) and a minimum dropping as low as -1°C (30°F). Travelers should be prepared for a wide range of temperatures, making layers essential for comfort during their visit.

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

The chart illustrates May temperature patterns in Syracuse, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Syracuse, May typically has an average temperature of 17°C (63°F), with highs reaching up to 36°C (98°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec343446546376797771554537
Data source: Temperature data for Syracuse 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 Syracuse

In Syracuse in May, the precipitation amount is 91 mm (3.6 in) over a period of 11 days.

May Precipitation Trends in Syracuse

The chart displays monthly precipitation patterns in Syracuse, 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 Syracuse, May typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec161738389148455937281016
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Syracuse

In Syracuse in May humidity is 81%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket enveloping you, making travel slightly oppressive and calling for frequent breaks in air-conditioned spaces to recharge and enjoy your journey comfortably.

May Average Humidity in Syracuse

This chart illustrates the average monthly humidity levels in Syracuse, 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 Syracuse is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%77%65%67%81%82%82%84%79%75%79%83%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Syracuse

In Syracuse 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 Syracuse.

Maximum UV Index Levels in Syracuse for May

The chart shows the monthly maximum UV Index (UVI) for Syracuse 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 Syracuse typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec457101112121110753
Data source: Syracuse 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 Syracuse Compares to Other Months

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

This table compares monthly weather conditions in Syracuse, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)16 mm (0.6 inches)74%moderate
February Weather1°C (34°F)16 mm (0.6 inches)77%moderate
March Weather8°C (47°F)38 mm (1.5 inches)65%high
April Weather12°C (54°F)38 mm (1.5 inches)67%very high
May Weather17°C (63°F)91 mm (3.6 inches)81%extreme
June Weather24°C (76°F)48 mm (1.9 inches)82%extreme
July Weather26°C (80°F)45 mm (1.8 inches)82%extreme
August Weather25°C (77°F)59 mm (2.3 inches)84%extreme
September Weather22°C (72°F)37 mm (1.5 inches)79%very high
October Weather13°C (55°F)28 mm (1.1 inches)75%high
November Weather7°C (45°F)10 mm (0.4 inches)79%moderate
December Weather3°C (37°F)16 mm (0.6 inches)83%moderate

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