Fort Collins Climate: Cold Semi-Arid with Extreme Drought
Fort Collins Climate: Cold Semi-Arid with Extreme Drought
US · Published Oct 26, 2026
• Fort Collins, Colorado, experiences a Cold Semi-Arid Climate, classified as BSk under the Köppen system. The city is currently facing extreme drought conditions, with an average annual precipitation of 15.8 inches. The region falls under USDA Plant Hardiness Zone 5b, with temperatures ranging from an average annual low of 34.7°F (1.5°C) to a high of 63.1°F (17.3°C). The growing season typically spans from the last frost, occurring between May 1 and May 10, to the first frost, which usually happens between October 1 and October
• This results in approximately 150 to 180 frost days per year.

Impact & Risks

The extreme drought conditions in Fort Collins pose significant risks to agriculture, water resources, and local ecosystems. The limited annual precipitation of 15.8 inches may exacerbate water shortages and stress on vegetation, particularly during the growing season. Residents and farmers in the area should be prepared for potential challenges related to water conservation and crop management. The cold semi-arid climate also means that temperature fluctuations can impact outdoor activities and infrastructure.

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