Last updated: June 24, 2025
In St Marys, United States, the average temperature in April is a pleasant 21°C (69°F). However, you can expect a range, with minimums dipping to 7°C (45°F) and highs reaching 32°C (89°F). This month brings about 66 mm (2.6 in) of precipitation over approximately 7 days, along with an average humidity level of 72%. Prepare for a mix of warmth and occasional showers!
In April in St Marys, the average temperature is 21°C (69°F). Maximum temperatures can reach 32°C (89°F), while minimum temperatures can drop as low as 7°C (45°F). This climate makes St Marys a great destination for travelers seeking mild weather and a variety of outdoor activities.
In St Marys in April, the precipitation amount is 66 mm (2.6 in) over a period of 7 days.
In St Marys in April humidity is 72%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace that can be a bit sticky, making travel slightly uncomfortable but tolerable. It creates a tropical atmosphere, perfect for leisurely strolls in the early morning or late afternoon when the heat is more bearable, though midday excursions may require plenty of water and occasional breaks in the shade.
In St Marys in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in St Marys.
UV Risk Categories
Weather in St Marys varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in St Marys, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 13°C (56°F) | 51 mm (2.0 inches) | 84% | moderate |
| February Weather | 16°C (61°F) | 71 mm (2.8 inches) | 79% | high |
| March Weather | 18°C (64°F) | 44 mm (1.7 inches) | 78% | very high |
| April Weather | 21°C (69°F) | 66 mm (2.6 inches) | 72% | very high |
| May Weather | 24°C (75°F) | 80 mm (3.2 inches) | 72% | extreme |
| June Weather | 26°C (80°F) | 145 mm (5.7 inches) | 74% | extreme |
| July Weather | 27°C (81°F) | 170 mm (6.7 inches) | 82% | extreme |
| August Weather | 27°C (82°F) | 172 mm (6.8 inches) | 82% | extreme |
| September Weather | 26°C (80°F) | 155 mm (6.1 inches) | 83% | very high |
| October Weather | 24°C (75°F) | 78 mm (3.1 inches) | 79% | very high |
| November Weather | 18°C (64°F) | 80 mm (3.1 inches) | 82% | high |
| December Weather | 15°C (59°F) | 86 mm (3.4 inches) | 85% | moderate |