With a population of around 6,800, Sidney sits in Montana, United States. The city operates in the Mountain Time Zone.
In 2025, Sidney recorded an average annual temperature of 45°F. The hottest temperatures reached 100°F in August; the coolest were -31°F in February. Total precipitation for the year was 18 inches, with the wettest month being May. Snowfall for the year totaled approximately 8 inches.
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