Alma, Colorado, nestled in the Rocky Mountains, boasts a distinctive subalpine climate characterized by cool summers and cold, snowy winters. Understanding these patterns is essential for residents and visitors alike.
Temperature Trends
Throughout the year, Alma experiences significant temperature fluctuations. Average high temperatures range from 30°F (-1°C) in January to 72°F (22°C) in July. Conversely, average low temperatures span from 5°F (-15°C) in January to 38°F (3°C) in August. This variation underscores the need for versatile clothing and preparedness for sudden weather changes.
Precipitation and Snowfall
Alma receives an average annual precipitation of approximately 14.79 inches (375 mm). Snowfall is a prominent feature, with snow falling from October through May. The town averages 139 days of snowfall annually, accumulating up to 101.69 inches (2583 mm). Notably, May often records the highest snowfall, with an average of 16.26 inches (413 mm) over 15.8 days. Residents should be prepared for extended winter conditions and ensure their homes and vehicles are equipped for heavy snow.
Seasonal Variations
Spring and autumn are brief but pleasant, featuring cool days and cold nights that can occasionally dip below freezing. Summers are mild, with average high temperatures peaking at 72°F (22°C) in July. However, even summer nights can be chilly, so it’s advisable to have warm clothing on hand. The wettest months are July and August, primarily due to thunderstorm activity, making it essential to stay informed about weather forecasts during outdoor activities.
Wind and Humidity
Alma experiences significant seasonal variation in wind speeds. The windier part of the year lasts from December 23 to May 21, with average wind speeds exceeding 11 miles per hour. April is typically the windiest month, averaging 12.8 miles per hour. Humidity levels also fluctuate, with February being the most humid month, averaging 89% relative humidity, while June is the least humid at 52%. These factors can influence comfort levels and should be considered when planning outdoor activities.
Gardening and Plant Hardiness
For gardening enthusiasts, it’s important to note that Alma falls within Plant Hardiness Zone 5b, with average minimum temperatures ranging from -15°F to -10°F. The average last frost date is between June 1 and June 10, and the first frost typically occurs between August 21 and August 31. This short growing season necessitates selecting hardy plant varieties and being prepared for sudden temperature drops.
By understanding Alma’s unique climate patterns, residents can better prepare for the seasonal changes and make the most of what this beautiful mountain town has to offer.