Last updated: June 24, 2025
In May, the average temperature in Fox River, United States is a brisk 4°C (40°F), with extremes ranging from a chilly -5°C (23°F) to a mild 18°C (65°F). Expect 128 mm (5.0 in) of precipitation over 19 days, contributing to an average humidity of 87%—perfect for cozy indoor days and enjoying the serene beauty of the season.
In May in Fox River, the average temperature is 4°C (40°F). The maximum can reach 18°C (65°F), and the minimum can dip as low as -5°C (23°F). Travelers should be prepared for chilly weather and pack accordingly, as conditions can fluctuate significantly.
In Fox River in May, the total precipitation amount is 128 mm (5.0 in) spread across 19 days.
In Fox River in May humidity is 87%. With an average temperature of 4°C (40°F), this humidity feels like an uncomfortable chill that seeps into your bones, making it essential to dress warmly and prepare for damp conditions, which can dampen your spirits while traveling.
In Fox River in May, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Fox River, you can refer to this Hourly UV Index in Fox River.
UV Risk Categories
Weather in Fox River varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Fox River, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (20°F) | 144 mm (5.7 inches) | 92% | low |
| February Weather | -5°C (23°F) | 95 mm (3.7 inches) | 92% | low |
| March Weather | -5°C (24°F) | 91 mm (3.6 inches) | 86% | moderate |
| April Weather | 1°C (33°F) | 86 mm (3.4 inches) | 79% | moderate |
| May Weather | 4°C (40°F) | 128 mm (5.0 inches) | 87% | high |
| June Weather | 10°C (50°F) | 77 mm (3.0 inches) | 91% | high |
| July Weather | 13°C (56°F) | 83 mm (3.3 inches) | 92% | high |
| August Weather | 12°C (54°F) | 101 mm (4.0 inches) | 92% | high |
| September Weather | 8°C (47°F) | 150 mm (5.9 inches) | 90% | moderate |
| October Weather | 3°C (37°F) | 215 mm (8.5 inches) | 87% | low |
| November Weather | -5°C (24°F) | 166 mm (6.5 inches) | 91% | low |
| December Weather | -4°C (25°F) | 244 mm (9.6 inches) | 92% | low |