Last updated: June 24, 2025
In May, the average temperature in Altona, United States is a mild 13°C (56°F). However, temperatures can range dramatically, dipping as low as -1°C (30°F) and soaring to a scorching 37°C (98°F). With an average precipitation of 106 mm (4.2 in) over 13 days, expect occasional showers. Adding to the atmosphere, the average humidity stands at a notable 80%, contributing to the region's characteristic climate.
In May in Altona, the average temperature is 13°C (56°F). The maximum can reach 37°C (98°F), while the minimum can be as low as -1°C (30°F). Travelers should be prepared for a wide range of temperatures and dress accordingly for both warm and chilly moments.
In Altona in May, the precipitation amount is 106 mm (4.2 in) spread over a duration of 13 days.
In Altona in May humidity is 80%. With average temperature 13°C (56°F) this humidity feels like a damp chill that seeps into your bones, making outdoor exploration more challenging and necessitating layered clothing for comfort.
In Altona in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Altona.
UV Risk Categories
Weather in Altona varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Altona, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (19°F) | 85 mm (3.3 inches) | 93% | low |
| February Weather | -6°C (21°F) | 87 mm (3.4 inches) | 92% | moderate |
| March Weather | -2°C (29°F) | 89 mm (3.5 inches) | 86% | moderate |
| April Weather | 6°C (42°F) | 119 mm (4.7 inches) | 85% | high |
| May Weather | 13°C (56°F) | 106 mm (4.2 inches) | 80% | very high |
| June Weather | 18°C (65°F) | 121 mm (4.7 inches) | 74% | very high |
| July Weather | 21°C (71°F) | 125 mm (4.9 inches) | 76% | very high |
| August Weather | 20°C (69°F) | 117 mm (4.6 inches) | 75% | very high |
| September Weather | 16°C (61°F) | 75 mm (2.9 inches) | 78% | high |
| October Weather | 9°C (49°F) | 143 mm (5.6 inches) | 86% | moderate |
| November Weather | 1°C (34°F) | 112 mm (4.4 inches) | 88% | moderate |
| December Weather | -4°C (25°F) | 82 mm (3.2 inches) | 89% | low |