Last updated: June 24, 2025
In Mountain Brook, United States, the average temperature in May hovers around 22°C (72°F), with extremes ranging from a brisk 4°C (40°F) to a sizzling 34°C (93°F). Expect about 105 mm (4.2 in) of rainfall over 11 days, and prepare for high humidity at an average of 81%. Whether you're enjoying the warmth or bracing for a shower, this month offers a unique blend of weather!
In May in Mountain Brook, the average temperature is 22°C (72°F). Maximum temperatures can reach 34°C (93°F), while minimums can be as low as 4°C (40°F). It's a great time to pack for a range of weather, ensuring you're prepared for both warm days and cooler evenings.
In Mountain Brook in May, the total precipitation amount reaches 105 mm (4.2 in) over the course of 11 days.
In Mountain Brook in May, humidity is 81%. With an average temperature of 22°C (72°F), this humidity feels like a warm, enveloping blanket, making traveling feel both lush and a bit stifling, as the air clings to your skin and every step is accompanied by a gentle sheen of moisture.
In Mountain Brook in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Mountain Brook.
UV Risk Categories
Weather in Mountain Brook varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Mountain Brook, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 8°C (46°F) | 117 mm (4.6 inches) | 85% | moderate |
| February Weather | 11°C (52°F) | 168 mm (6.6 inches) | 84% | high |
| March Weather | 14°C (58°F) | 149 mm (5.9 inches) | 82% | very high |
| April Weather | 17°C (63°F) | 143 mm (5.6 inches) | 82% | very high |
| May Weather | 22°C (72°F) | 105 mm (4.2 inches) | 81% | extreme |
| June Weather | 25°C (78°F) | 146 mm (5.7 inches) | 77% | extreme |
| July Weather | 27°C (81°F) | 114 mm (4.5 inches) | 77% | extreme |
| August Weather | 26°C (80°F) | 125 mm (4.9 inches) | 72% | extreme |
| September Weather | 25°C (77°F) | 87 mm (3.4 inches) | 73% | very high |
| October Weather | 19°C (67°F) | 131 mm (5.2 inches) | 73% | high |
| November Weather | 11°C (53°F) | 82 mm (3.2 inches) | 85% | high |
| December Weather | 10°C (49°F) | 146 mm (5.8 inches) | 88% | moderate |