Monthly weather forecast and climate
Fort Collins, CO

A road network through a scenic residential estate in Fort Collins, Colorado, with distant hill ranges and a cloudy sky
A road network through a scenic residential estate in Fort Collins, Colorado, with distant hill ranges and a cloudy sky
In January, the average high-temperature is 44.2°F (6.8°C), and the average low-temperature is 17.4°F (-8.1°C). January is the month with the least rainfall.
Weather in January »
In February, the average high-temperature is 46.6°F (8.1°C), and the average low-temperature is 20.5°F (-6.4°C). In Fort Collins, Colorado, in February, during 4.9 rainfall days, 0.4" (10.7mm) of precipitation is typically accumulated.
Weather in February »
In Fort Collins, in March, the average high-temperature is 54.7°F (12.6°C), and the average low-temperature is 27.7°F (-2.4°C). In Fort Collins, during 6.4 rainfall days, 1.6" (40.6mm) of precipitation is typically accumulated.
Weather in March »
In Fort Collins, Colorado, the average high-temperature is 62.2°F (16.8°C), and the average low-temperature is 35.1°F (1.7°C). In Fort Collins, during 8.6 rainfall days, 2.1" (52.3mm) of precipitation is typically accumulated.
Weather in April »
In May, the average high-temperature is 71.1°F (21.7°C), and the average low-temperature is 44.1°F (6.7°C). The month with the most rainfall is May when the rain falls for 11.2 days and typically aggregates up to 2.4" (61.7mm) of precipitation.
Weather in May »
In June, the average high-temperature is 80.4°F (26.9°C), and the average low-temperature is 52.2°F (11.2°C). In June, the rain falls for 10 days.
Weather in June »
July is the warmest month, with an average high-temperature of 86.5°F (30.3°C) and an average low-temperature of 57.9°F (14.4°C). In Fort Collins, during 9 rainfall days, 1.7" (43.4mm) of precipitation is typically accumulated.
Weather in July »
The average high-temperature, is 84°F (28.9°C), while the average low-temperature is 56.3°F (13.5°C). In Fort Collins, in August, it is raining for 9.4 days, with typically 1.6" (40.6mm) of accumulated precipitation.
Weather in August »
In September, the average high-temperature is 75.9°F (24.4°C), and the average low-temperature is 47.1°F (8.4°C). In Fort Collins, in September, during 7.6 rainfall days, 1.3" (33.8mm) of precipitation is typically accumulated.
Weather in September »
In October, in Fort Collins, the average high-temperature is 63.9°F (17.7°C), and the average low-temperature is 36°F (2.2°C). In Fort Collins, during October, the rain falls for 6.3 days and regularly aggregates up to 1.1" (29.2mm) of precipitation.
Weather in October »
The average high-temperature, is 51.4°F (10.8°C), while the average low-temperature is 25.5°F (-3.6°C). In Fort Collins, during November, the rain falls for 5.2 days and regularly aggregates up to 0.8" (19.3mm) of precipitation.
Weather in November »
The coldest month is December, with an average high-temperature of 42.8°F (6°C) and an average low-temperature of 17.2°F (-8.2°C). In December, the rain falls for 4.5 days.
Weather in December »

How much does it rain in Fort Collins?

Throughout the year, in Fort Collins, there are 87.2 rainfall days, and 16.1" (409.6mm) of precipitation is accumulated.

What is the driest month in Fort Collins?

The month with the least rainfall is January when the rain falls for 4.1 days and typically collects 0.4" (10.2mm) of precipitation.

When does it snow in Fort Collins?

January through May, September through December are months with snowfall in Fort Collins, Colorado.

How many days does it snow in Fort Collins?

Throughout the year, in Fort Collins, there are 28.8 snowfall days, and 54.4" (1381.7mm) of snow is accumulated.

What is the month with the lowest UV index in Fort Collins?

January, November and December, with an average UV index of 2, are months with the lowest UV index in Fort Collins.

What is the snowiest month in Fort Collins?

March is the month with the most snowfall. Snow falls for 5.3 days and accumulates 12.1" (307.3mm) of snow.

What is the wettest month in Fort Collins?

The month with the most rainfall is May when the rain falls for 11.2 days and typically aggregates up to 2.4" (61.7mm) of precipitation.

When are the longest days in Fort Collins?

With an average of 15h of daylight, June has the longest days of the year in Fort Collins, Colorado.

What are the months with the most sunshine in Fort Collins?

June and July, with an average of 11h of sunshine, are months with the most sunshine.

What is the month with the highest UV index in Fort Collins?

June and July, with an average UV index of 10, are months with the highest UV index.

What is the warmest month in Fort Collins?

With an average high-temperature of 86.5°F (30.3°C) and an average low-temperature of 57.9°F (14.4°C), July is the warmest month in Fort Collins, Colorado.

What is the month with the least sunshine in Fort Collins?

Months with the least sunshine in Fort Collins are November and December, with an average of 6h of sunshine.

What is the coldest month in Fort Collins?

The coldest month in Fort Collins is December, with an average high-temperature of 42.8°F (6°C) and an average low-temperature of 17.2°F (-8.2°C).

What is the month with the shortest days in Fort Collins?

With an average of 9.3h of daylight, December has the shortest days of the year.
Average temperature - Fort Collins, CO
Average rainfall - Fort Collins, CO
Average rainfall days - Fort Collins, CO

The month with the highest number of rainy days is May (11.2 days).
The month with the lowest number of rainy days is January (4.1 days).

Average snowfall days - Fort Collins, CO

The month with the highest number of snowfall days is March (5.3 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average daylight / Average sunshine - Fort Collins, CO
Average UV index - Fort Collins, CO
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