Last updated: June 24, 2025
In Decatur, United States, the average temperature in March is a comfortable 15°C (59°F). However, prepare for a range of weather; temperatures can dip as low as -7°C (20°F) or soar up to 32°C (90°F). With an average humidity of 74% and 85 mm (3.3 in) of precipitation spread across 9 days, it's a month where versatility in clothing is key!
In March in Decatur, the average temperature is 15°C (59°F), with maximums reaching up to 32°C (90°F) and minimums dipping as low as -7°C (20°F). This makes it essential for travelers to be prepared for a wide range of weather conditions during their visit.
In Decatur in March, the precipitation amount is 85 mm (3.3 in) over the course of 9 days.
In Decatur in March, humidity is 74%. With an average temperature of 15°C (59°F), this humidity feels like traveling through a warm, sticky blanket that clings to your skin, making outdoor activities a bit uncomfortable and prompting you to seek out shaded areas or cool breezes.
In Decatur in March, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Decatur.
UV Risk Categories
Weather in Decatur varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Decatur, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 7°C (45°F) | 51 mm (2.0 inches) | 77% | moderate |
February Weather | 9°C (48°F) | 78 mm (3.1 inches) | 76% | high |
March Weather | 15°C (59°F) | 85 mm (3.3 inches) | 74% | very high |
April Weather | 18°C (64°F) | 91 mm (3.6 inches) | 75% | very high |
May Weather | 23°C (74°F) | 135 mm (5.3 inches) | 80% | extreme |
June Weather | 27°C (81°F) | 86 mm (3.4 inches) | 80% | extreme |
July Weather | 29°C (85°F) | 44 mm (1.7 inches) | 75% | extreme |
August Weather | 29°C (84°F) | 82 mm (3.2 inches) | 67% | extreme |
September Weather | 26°C (78°F) | 81 mm (3.2 inches) | 64% | very high |
October Weather | 19°C (67°F) | 121 mm (4.8 inches) | 70% | very high |
November Weather | 13°C (55°F) | 50 mm (2.0 inches) | 82% | high |
December Weather | 10°C (50°F) | 49 mm (1.9 inches) | 85% | moderate |