Last updated: June 24, 2025
In March, the average temperature in Lewistown, United States hovers around 0°C (32°F), with a minimum plunging to -31°C (-24°F) and a maximum reaching 19°C (67°F). Expect precipitation of about 29 mm (1.2 in) spread over 9 days, while the average humidity sits comfortably at 77%. Be prepared for some chilly days!
In March in Lewistown, the average temperature is 0°C (32°F). The maximum can reach 19°C (67°F) and the minimum can be as low as -31°C (-24°F). This wide range of temperatures makes it essential for travelers to pack accordingly, ensuring they are prepared for both mild and extreme weather conditions.
In Lewistown in March, the precipitation amount is 29 mm (1.2 in) over a span of 9 days.
In Lewistown in March, humidity is 77%. With an average temperature of 0°C (32°F), this humidity feels like a cold, damp chill that can make outdoor activities uncomfortable and travel less enjoyable, as the moisture in the air clings to your skin, leaving you feeling colder than the temperature suggests.
In Lewistown in March, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Lewistown.
UV Risk Categories
Weather in Lewistown varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Lewistown, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 25 mm (1.0 inches) | 81% | low |
| February Weather | -8°C (18°F) | 43 mm (1.7 inches) | 85% | moderate |
| March Weather | 0°C (32°F) | 29 mm (1.2 inches) | 77% | moderate |
| April Weather | 3°C (38°F) | 76 mm (3.0 inches) | 72% | very high |
| May Weather | 10°C (50°F) | 84 mm (3.3 inches) | 75% | very high |
| June Weather | 16°C (61°F) | 80 mm (3.2 inches) | 78% | very high |
| July Weather | 20°C (69°F) | 30 mm (1.2 inches) | 79% | very high |
| August Weather | 19°C (67°F) | 31 mm (1.2 inches) | 76% | very high |
| September Weather | 14°C (57°F) | 45 mm (1.8 inches) | 67% | very high |
| October Weather | 5°C (42°F) | 45 mm (1.8 inches) | 69% | moderate |
| November Weather | 1°C (34°F) | 34 mm (1.3 inches) | 78% | moderate |
| December Weather | -3°C (27°F) | 31 mm (1.2 inches) | 85% | low |