Weather in Frisco

Frisco has a quintessential high-altitude mountain climate with mild summer temperatures and cold winters. Tucked into a mountain valley, Frisco receives only 14 inches of rainfall each year, less than half the U.S. average. This makes Frisco drier than the surrounding mountains and valleys. July and August are Frisco's wettest months, with less than two inches of precipitation each month. Because of its drier-than-normal climate, Frisco receives about 240 days of sunshine.

But snowfall still comes regularly to this mountain haven, starting in late September, and Frisco usually sees snow eight months out of the year —130 inches of snow in all. It is not uncommon for winter visitors in Frisco to find more than a foot of snow on the ground every day from December through February. Meanwhile, the surrounding mountains are usually covered with twice that amount.

Winters in Frisco can be quite frigid, since temperatures in January don't usually rise above freezing. January days reach 31 degrees in the daytime but plunge to 0 degrees at night. The record low was -46, a bitter cold experienced by residents in December 1924.

In the summer, however, Frisco becomes a very pleasant place to live. June is Frisco's sunniest month, with less precipitation and temperatures in the 60s. In July, highs reach their annual peak between 70 and 75 degrees. The record high in Frisco was 89 degrees, recorded in July 1939. Being a mountain climate, however, the daily temperature swings are significant, with lows often dipping below 40 degrees at night.

Frisco has a fairly humid climate in the mornings, thanks in large part to its location on the western shore of Dillon Reservoir. The lake, which covers more than 3,000 acres, keeps humidity at or above 60 percent for most of the night and morning. However, the lake also allows for a stiff wind to pass through Frisco most days of the year and humidity is usually a comfortable 30-35 percent in the afternoons.

One other factor visitors to Frisco need to consider is its altitude. At 9,000 feet, the atmosphere is thinner than at sea level and, as a result, the sun is brighter. UV radiation can easily cause sunburn, even on cloudy days. People visiting Frisco are advised to wear sunblock and protect their eyes by wearing sunglasses.