Last updated: June 24, 2025
In Green Bay, United States, the average temperature in April is a chilly 6°C (43°F). Expect a range that can dip as low as -14°C (8°F) and soar up to a pleasant 25°C (78°F). During this month, precipitation averages 99 mm (3.9 in) spread across 12 days, with humidity levels lingering at 84%, which may lead to a rather crisp and damp atmosphere.
In April in Green Bay, the average temperature is 6°C (43°F). Maximum temperatures can reach 25°C (78°F), while minimums can drop to as low as -14°C (8°F). Prepare for a wide range of weather conditions when traveling to Green Bay during this time.
In Green Bay in April, the total precipitation amount is 99 mm (3.9 in) recorded over a span of 12 days.
In Green Bay in April, humidity is 84%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that penetrates your clothing, making outdoor excursions uncomfortable and prompting travelers to seek refuge indoors or find warm, sheltered spots to enjoy their surroundings.
In Green Bay in April, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Green Bay.
UV Risk Categories
Weather in Green Bay varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Green Bay, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 40 mm (1.6 inches) | 89% | low |
| February Weather | -6°C (21°F) | 48 mm (1.9 inches) | 90% | moderate |
| March Weather | 1°C (33°F) | 59 mm (2.3 inches) | 87% | moderate |
| April Weather | 6°C (43°F) | 99 mm (3.9 inches) | 84% | high |
| May Weather | 14°C (57°F) | 106 mm (4.2 inches) | 77% | very high |
| June Weather | 20°C (68°F) | 106 mm (4.2 inches) | 75% | very high |
| July Weather | 23°C (73°F) | 108 mm (4.2 inches) | 74% | very high |
| August Weather | 21°C (70°F) | 107 mm (4.2 inches) | 73% | very high |
| September Weather | 17°C (63°F) | 65 mm (2.5 inches) | 78% | high |
| October Weather | 10°C (50°F) | 94 mm (3.7 inches) | 84% | moderate |
| November Weather | 2°C (35°F) | 48 mm (1.9 inches) | 89% | moderate |
| December Weather | -3°C (27°F) | 54 mm (2.1 inches) | 87% | low |