Last updated: June 24, 2025
In Rockford, United States, the average temperature in May hovers around 17°C (63°F). However, temperatures can fluctuate significantly, with a minimum of -1°C (30°F) and a maximum reaching 34°C (94°F). Expect precipitation to amount to 128 mm (5.1 in) over 14 days, and prepare for a rather humid atmosphere, with an average humidity of 81%.
In May in Rockford, the average temperature is 17°C (63°F), with maximums reaching 34°C (94°F) and minimums dropping as low as -1°C (30°F). This variation makes it an ideal time for travelers to pack both light clothing for warm days and warmer layers for chilly nights.
In Rockford in May, the precipitation amount is 128 mm (5.1 in) spread over 14 days.
In Rockford 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.
In Rockford 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 Rockford.
UV Risk Categories
Weather in Rockford varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Rockford, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -2°C (29°F) | 75 mm (2.9 inches) | 88% | moderate |
February Weather | 0°C (32°F) | 84 mm (3.3 inches) | 87% | moderate |
March Weather | 5°C (41°F) | 100 mm (3.9 inches) | 87% | high |
April Weather | 10°C (51°F) | 92 mm (3.6 inches) | 87% | very high |
May Weather | 17°C (63°F) | 128 mm (5.1 inches) | 81% | very high |
June Weather | 22°C (73°F) | 123 mm (4.9 inches) | 82% | very high |
July Weather | 24°C (76°F) | 109 mm (4.3 inches) | 81% | very high |
August Weather | 23°C (74°F) | 103 mm (4.0 inches) | 78% | very high |
September Weather | 20°C (69°F) | 70 mm (2.8 inches) | 78% | very high |
October Weather | 14°C (57°F) | 93 mm (3.7 inches) | 82% | high |
November Weather | 5°C (42°F) | 83 mm (3.3 inches) | 89% | moderate |
December Weather | 2°C (35°F) | 64 mm (2.5 inches) | 86% | low |