Monthly weather forecast and climate
Fort Lyon, CO

Weather in January

January, like December, is another chilly winter month in Fort Lyon, Colorado, with average temperature varying between 27°F (-2.8°C) and 45.1°F (7.3°C). In January, the average high-temperature is essentially the same as in December - a still frosty 45.1°F (7.3°C). Weather in January »

Weather in February

The last month of the winter, February, is also a frosty month in Fort Lyon, Colorado, with average temperature varying between 28.8°F (-1.8°C) and 47.8°F (8.8°C). In Fort Lyon, Colorado, the average high-temperature is almost the same as in January - a still chilly 47.8°F (8.8°C). Weather in February »

Weather in March

The first month of the spring, March, is a moderate month in Fort Lyon, Colorado, with average temperature fluctuating between 60.4°F (15.8°C) and 39.2°F (4°C). In Fort Lyon, the average high-temperature increases, from a chilly 47.8°F (8.8°C) in February, to a mild 60.4°F (15.8°C). Weather in March »

Weather in April

April in Fort Lyon, Colorado, is a comfortable spring month, with average temperature varying between 67.3°F (19.6°C) and 45.1°F (7.3°C). In Fort Lyon, the average high-temperature in April marginally rises, from a moderate 60.4°F (15.8°C) in March, to a comfortable 67.3°F (19.6°C). Weather in April »

Weather in May

May, the last month of the spring, in Fort Lyon, is a warm month, with average temperature varying between 76.5°F (24.7°C) and 53.6°F (12°C). In May, the average high-temperature rises, from an enjoyable 67.3°F (19.6°C) in April, to a warm 76.5°F (24.7°C). Weather in May »

Weather in June

June, the first month of the summer, in Fort Lyon, is a tropical month, with temperature in the range of an average low of 66.2°F (19°C) and an average high of 90.1°F (32.3°C). In Fort Lyon, the average high-temperature rises, from a warm 76.5°F (24.7°C) in May, to a hot 90.1°F (32.3°C). Weather in June »

Weather in July

July, the same as June, in Fort Lyon, Colorado, is another tropical summer month, with temperature in the range of an average low of 70.9°F (21.6°C) and an average high of 92.8°F (33.8°C). The warmest month is July, with an average high-temperature of 92.8°F (33.8°C) and an average low-temperature of 70.9°F (21.6°C). The average heat index is evaluated at a sweltering 96.1°F (35.6°C). Weather in July »

Weather in August

The last month of the summer, August, is also a hot month in Fort Lyon, Colorado, with temperature in the range of an average high of 90.1°F (32.3°C) and an average low of 68.5°F (20.3°C). In August, the average high-temperature is essentially the same as in July - a still tropical 90.1°F (32.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Fort Lyon, Colorado, with average temperature varying between 83.5°F (28.6°C) and 61.9°F (16.6°C). In September, the average high-temperature slightly decreases, from a hot 90.1°F (32.3°C) in August, to a moderately hot 83.5°F (28.6°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Fort Lyon, Colorado, with average temperature ranging between max 67.6°F (19.8°C) and min 47.1°F (8.4°C). In October, the average high-temperature declines considerably, from a moderately hot 83.5°F (28.6°C) in September, to a comfortable 67.6°F (19.8°C). Weather in October »

Weather in November

November, the last month of the autumn, in Fort Lyon, is another mild month, with average temperature ranging between min 36.3°F (2.4°C) and max 55.8°F (13.2°C). In Fort Lyon, the average high-temperature decreases, from a comfortable 67.6°F (19.8°C) in October, to a mild 55.8°F (13.2°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Fort Lyon, Colorado, with average temperature fluctuating between 43.7°F (6.5°C) and 26.6°F (-3°C). With an average high-temperature of 43.7°F (6.5°C) and an average low-temperature of 26.6°F (-3°C), December is the coldest month. Weather in December »
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FAQ

What is the most humid month in Fort Lyon?

The most humid month in Fort Lyon, Colorado, is January, with an average relative humidity of 58%.

How many days does it rain in Fort Lyon?

In Fort Lyon, during the entire year, the rain falls for 89.9 days and collects up to 10.2" (259mm) of precipitation.

What is the driest month in Fort Lyon?

January, November and December are months with the least rain when the rain falls for 3.3 days and typically aggregates up to 0.35" (9mm) of rain.

When does it snow in Fort Lyon?

January through May, October through December are months with snowfall in Fort Lyon.

How much does it snow in Fort Lyon?

Throughout the year, in Fort Lyon, there are 23.2 snowfall days, and 10.28" (261mm) of snow is accumulated.

When is the lowest UV index in Fort Lyon?

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

What is the snowiest month in Fort Lyon?

February is the month with the most snowfall in Fort Lyon, Colorado. Snow falls for 5.2 days and accumulates 2.17" (55mm) of snow.

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

The month with the least sunshine is February, with an average of 6.7h of sunshine.

What is the least humid month in Fort Lyon?

With an average relative humidity of 38%, June is the least humid month.

When it does not snow in Fort Lyon?

In Fort Lyon snow does not fall in June through September.

When are the longest days in Fort Lyon?

June has the longest days of the year in Fort Lyon, Colorado, with an average of 14.8h of daylight.

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

June through August, with an average maximum UV index of 7, are months with the highest UV index.

What is the warmest month in Fort Lyon?

July is the warmest month, with an average high-temperature of 92.8°F (33.8°C) and an average low-temperature of 70.9°F (21.6°C).

What is the wettest month in Fort Lyon?

The month with the most rainfall in Fort Lyon is July when the rain falls for 13.8 days and typically aggregates up to 1.81" (46mm) of precipitation.

What month has the most sunshine in Fort Lyon?

July has the most sunshine of the year, with an average of 11.9h of sunshine.

What is the coldest month in Fort Lyon?

The coldest month in Fort Lyon is December, with an average high-temperature of 43.7°F (6.5°C) and an average low-temperature of 26.6°F (-3°C).

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

The month with the shortest days is December, with an average of 9.6h of daylight.

Average temperature
Fort Lyon, CO

Average temperature - Fort Lyon, CO

The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is December (43.7°F).

The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is December (26.6°F).

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Average pressure
Fort Lyon, CO

Average pressure - Fort Lyon, CO

The month with the highest atmospheric pressure is January (30.09").
The month with the lowest atmospheric pressure is June (29.82").

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Average wind speed
Fort Lyon, CO

Average wind speed - Fort Lyon, CO

The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is January (8.2mph).

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Average rainfall
Fort Lyon, CO

Average rainfall - Fort Lyon, CO

The wettest month (with the highest rainfall) is July (1.81").
The driest months (with the least rainfall) are January, November and December (0.35").

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Average rainfall days
Fort Lyon, CO

Average rainfall days - Fort Lyon, CO

The month with the highest number of rainy days is July (13.8 days).
The month with the least rainy days is January (3.3 days).

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Average snowfall
Fort Lyon, CO

Average snowfall - Fort Lyon, CO

The month with the highest snowfall is February (2.17").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Fort Lyon, CO

Average snowfall days - Fort Lyon, CO

The month with the highest number of snowfall days is February (5.2 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Fort Lyon, CO

Average daylight / Average sunshine - Fort Lyon, CO

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

The month with the most sunshine is July (Average sunshine: 11.9h).
The month with the least sunshine is February (Average sunshine: 6.7h).

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Average sunshine days
Fort Lyon, CO

Average sunshine days - Fort Lyon, CO

The month with the most sunshine days is November (24.5 days).
The month with the least sunshine days is July (13.2 days).

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Average UV index
Fort Lyon, CO

Average UV index - Fort Lyon, CO

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January, November and December (UV index 2).

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Average visibility
Fort Lyon, CO

Average visibility - Fort Lyon, CO

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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