Last updated: June 24, 2025
In January, the average temperature in Grantsville, United States hovers around 2°C (35°F), with a notable range where temperatures can dip as low as -19°C (-2°F) or climb to a surprising 23°C (73°F). Expect around 98 mm (3.9 in) of precipitation spread over 11 days, contributing to an average humidity level of 88%. Prepare accordingly for the mix of chilly days and potential rain!
In January in Grantsville, the average temperature is 2°C (35°F). The maximum can reach 23°C (73°F) and the minimum can be as low as -19°C (-2°F). It's a time to prepare for a wide range of weather conditions, so pack accordingly for your travels!
In Grantsville in January, the total precipitation amount is 98 mm (3.9 in) over the course of 11 days.
In Grantsville in January, humidity is 88%. With an average temperature of 2°C (35°F), this humidity feels like you're wrapped in a cold, damp blanket, making outdoor activities uncomfortable and travel challenging due to the chill seeping into your bones.
In Grantsville in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Grantsville, you can check the information here.
UV Risk Categories
Weather in Grantsville varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Grantsville, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 2°C (35°F) | 98 mm (3.9 inches) | 88% | moderate |
February Weather | 4°C (40°F) | 142 mm (5.6 inches) | 88% | moderate |
March Weather | 8°C (46°F) | 115 mm (4.5 inches) | 88% | high |
April Weather | 13°C (55°F) | 142 mm (5.6 inches) | 86% | very high |
May Weather | 18°C (65°F) | 160 mm (6.3 inches) | 82% | very high |
June Weather | 22°C (72°F) | 172 mm (6.8 inches) | 84% | very high |
July Weather | 24°C (76°F) | 129 mm (5.1 inches) | 82% | very high |
August Weather | 23°C (74°F) | 120 mm (4.7 inches) | 73% | very high |
September Weather | 21°C (70°F) | 106 mm (4.2 inches) | 73% | very high |
October Weather | 15°C (60°F) | 116 mm (4.6 inches) | 81% | high |
November Weather | 7°C (45°F) | 81 mm (3.2 inches) | 89% | moderate |
December Weather | 4°C (40°F) | 122 mm (4.8 inches) | 86% | moderate |