Last updated: June 24, 2025
In October, the average temperature in St Johnsbury, United States hovers around 9°C (48°F), offering a crisp and refreshing atmosphere. Visitors should be prepared for temperatures ranging from a chilly -6°C (22°F) to a warm 25°C (77°F). With an average precipitation of 138 mm (5.5 in) over 14 days, and a humidity level of 85%, it's advisable to pack accordingly for both rainy and cool conditions.
In October in St Johnsbury, the average temperature is 9°C (48°F), with maximums reaching 25°C (77°F) and minimums dropping to as low as -6°C (22°F). This variation in temperatures makes it essential to pack layers for your travels to ensure you are prepared for both warm and chilly conditions.
In St Johnsbury in October, the precipitation amount is 138 mm (5.5 in) over a period of 14 days.
In St Johnsbury in October humidity is 85%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill enveloping you, making outdoor activities less enjoyable and requiring extra layers to stay warm and comfortable while traveling.
In St Johnsbury in October, 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 St Johnsbury.
UV Risk Categories
Weather in St Johnsbury varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in St Johnsbury, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (18°F) | 80 mm (3.1 inches) | 91% | low |
| February Weather | -6°C (21°F) | 78 mm (3.1 inches) | 89% | moderate |
| March Weather | -2°C (29°F) | 69 mm (2.7 inches) | 85% | moderate |
| April Weather | 5°C (42°F) | 110 mm (4.3 inches) | 84% | very high |
| May Weather | 12°C (55°F) | 95 mm (3.7 inches) | 78% | very high |
| June Weather | 17°C (63°F) | 98 mm (3.9 inches) | 72% | very high |
| July Weather | 20°C (69°F) | 106 mm (4.2 inches) | 75% | very high |
| August Weather | 19°C (67°F) | 88 mm (3.5 inches) | 74% | very high |
| September Weather | 15°C (60°F) | 64 mm (2.5 inches) | 77% | high |
| October Weather | 9°C (48°F) | 138 mm (5.5 inches) | 85% | moderate |
| November Weather | 0°C (33°F) | 103 mm (4.0 inches) | 86% | moderate |
| December Weather | -5°C (23°F) | 85 mm (3.3 inches) | 85% | low |