Last updated: June 24, 2025
In April, the average temperature in Ontonagon, United States hovers around 3°C (38°F), with extremes ranging from a brisk -13°C (8°F) to a comfortable 26°C (78°F). Expect about 82 mm (3.2 in) of precipitation over 12 days, contributing to an average humidity of 86%. Plan your activities accordingly to make the most of this chilly month!
In April in Ontonagon, the average temperature is 3°C (38°F), with maximums reaching up to 26°C (78°F) and minimums plunging as low as -13°C (8°F). Travelers should be prepared for a wide temperature range, making it essential to pack layers for comfort during the trip.
In Ontonagon in April, the precipitation amount is 82 mm (3.2 in) occurring over a span of 12 days.
In Ontonagon in April humidity is 86%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps through your layers, making traveling uncomfortable as breath clouds visibly in the crisp air.
In Ontonagon 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 Ontonagon.
UV Risk Categories
Weather in Ontonagon varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Ontonagon, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (18°F) | 44 mm (1.7 inches) | 92% | low |
| February Weather | -9°C (17°F) | 60 mm (2.3 inches) | 92% | moderate |
| March Weather | -2°C (28°F) | 54 mm (2.1 inches) | 88% | moderate |
| April Weather | 3°C (38°F) | 82 mm (3.2 inches) | 86% | high |
| May Weather | 12°C (54°F) | 71 mm (2.8 inches) | 78% | very high |
| June Weather | 18°C (64°F) | 90 mm (3.5 inches) | 74% | very high |
| July Weather | 21°C (69°F) | 77 mm (3.0 inches) | 70% | very high |
| August Weather | 19°C (66°F) | 111 mm (4.4 inches) | 71% | very high |
| September Weather | 15°C (60°F) | 92 mm (3.6 inches) | 74% | high |
| October Weather | 8°C (46°F) | 118 mm (4.6 inches) | 81% | moderate |
| November Weather | 0°C (31°F) | 72 mm (2.8 inches) | 86% | moderate |
| December Weather | -5°C (24°F) | 78 mm (3.1 inches) | 90% | low |