Climate and monthly weather forecast
Louisville, CO

Weather in January

January, like December, in Louisville, Colorado, is a wintry winter month, with an average temperature ranging between max 40.3°F (4.6°C) and min 21.6°F (-5.8°C). In January, the average high-temperature is practically the same as in December - a still cold 40.3°F (4.6°C). Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Louisville, Colorado, with an average temperature ranging between max 39.7°F (4.3°C) and min 20.7°F (-6.3°C). In Louisville, the average high-temperature in February is practically the same as in January - a still cold 39.7°F (4.3°C). Weather in February »

Weather in March

March, the first month of the spring in Louisville, is a cool month, with an average temperature ranging between max 50.7°F (10.4°C) and min 29.1°F (-1.6°C). In March, the average high-temperature increases from a cold 39.7°F (4.3°C) in February to a cool 50.7°F (10.4°C). Weather in March »

Weather in April

April in Louisville, Colorado, is a mild spring month, with an average temperature ranging between min 33.4°F (0.8°C) and max 57.6°F (14.2°C). In April, the average high-temperature slightly increases from a fresh 50.7°F (10.4°C) in March to a mild 57.6°F (14.2°C). Weather in April »

Weather in May

May, the last month of the spring in Louisville, is a comfortable month, with an average temperature varying between 66°F (18.9°C) and 41.7°F (5.4°C). In May, the average high-temperature marginally rises from a mild 57.6°F (14.2°C) in April to a comfortable 66°F (18.9°C). Weather in May »

Weather in June

June, the first month of the summer in Louisville, is a moderately hot month, with temperature in the range of an average high of 81.3°F (27.4°C) and an average low of 53.8°F (12.1°C). In Louisville, the average high-temperature in June soars, from an enjoyable 66°F (18.9°C) in May, to a warm 81.3°F (27.4°C). Weather in June »

Weather in July

July, like June, in Louisville, Colorado, is a moderately hot summer month, with an average temperature varying between 85.5°F (29.7°C) and 59°F (15°C). With an average high-temperature of 85.5°F (29.7°C) and an average low-temperature of 59°F (15°C), July is the warmest month. In July, the average heat index is appraised at a tropical 86°F (30°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Louisville, Colorado, with an average temperature fluctuating between 84.2°F (29°C) and 57.4°F (14.1°C). In August, the average high-temperature is practically the same as in July - a still warm 84.2°F (29°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Louisville, Colorado, with an average temperature varying between 50.7°F (10.4°C) and 76.6°F (24.8°C). In September, the average high-temperature slightly decreases from 84.2°F (29°C) in August to a still moderately hot 76.6°F (24.8°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Louisville, Colorado, with an average temperature fluctuating between 38.1°F (3.4°C) and 61°F (16.1°C). In Louisville, Colorado, the average high-temperature in October plummets from a moderately hot 76.6°F (24.8°C) in September to an enjoyable 61°F (16.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a fresh month in Louisville, Colorado, with an average temperature varying between 50°F (10°C) and 28.8°F (-1.8°C). In Louisville, the average high-temperature in November drops from an enjoyable 61°F (16.1°C) in October to a fresh 50°F (10°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Louisville, Colorado, with an average temperature fluctuating between 39.4°F (4.1°C) and 20.7°F (-6.3°C). With an average high-temperature of 39.4°F (4.1°C) and an average low-temperature of 20.7°F (-6.3°C), December is the coldest month. Weather in December »
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FAQ

What is the driest month in Louisville?

January is the month with the least rainfall in Louisville, Colorado. Rain falls for 4.8 days and accumulates 0.16" (4mm) of precipitation.

How many days does it rain in Louisville?

Throughout the year, there are 96.7 rainfall days, and 5.63" (143mm) of precipitation is accumulated.

When does it snow in Louisville?

Months with snowfall are January through May, October through December.

How many days does it snow in Louisville?

In Louisville, during the entire year, snow falls for 36.7 days and aggregates up to 13.98" (355mm) of snow.

When is the lowest UV index in Louisville?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Louisville.

What is the most humid month in Louisville?

The most humid month in Louisville, Colorado, is February, with an average relative humidity of 67%.

What is the snowiest month in Louisville?

The month with the most snowfall is February, when snow falls for 8.4 days and typically aggregates up to 2.68" (68mm) of snow.

What is the month with the least sunshine in Louisville?

February has the least sunshine of the year, with an average of 6.7h of sunshine.

When is Daylight Saving Time (DST) in Louisville?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from MDT to MST.

What is the rainiest month in Louisville?

The months with the most rainfall in Louisville are May and July, with an average 0.87" (22mm) of precipitation.

When it does not snow in Louisville?

In Louisville, Colorado, snow does not fall in June through September.

When are the longest days in Louisville?

June has the longest days of the year in Louisville, Colorado, with an average of 14h and 58min of daylight.

What is the month with the most sunshine in Louisville?

June through August, with an average of 11.8h of sunshine, are months with the most sunshine.

What is the warmest month in Louisville?

July is the warmest month in Louisville, Colorado, with an average high-temperature of 85.5°F (29.7°C) and an average low-temperature of 59°F (15°C).

What are the months with the highest UV index in Louisville?

The months with the highest UV index in Louisville are July and August, with an average maximum UV index of 6.

What is the least humid month in Louisville?

August is the least humid month in Louisville, Colorado, with an average relative humidity of 41%.

What is the coldest month in Louisville?

December is the coldest month, with an average high-temperature of 39.4°F (4.1°C) and an average low-temperature of 20.7°F (-6.3°C).

What is the month with the shortest days in Louisville?

The month with the shortest days in Louisville is December, with an average of 9h and 23min of daylight.

Average temperature
Louisville, CO

Average temperature - Louisville, CO

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (39.4°F).

The month with the highest average low temperature is July (59°F).
The coldest months (with the lowest average low temperature) are February and December (20.7°F).

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Average pressure
Louisville, CO

Average pressure - Louisville, CO

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).

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Average wind speed
Louisville, CO

Average wind speed - Louisville, CO

The windiest months (with the highest average wind speed) are March and April (6.5mph).
The calmest month (with the lowest average wind speed) is September (5.6mph).

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Average rainfall
Louisville, CO

Average rainfall - Louisville, CO

The wettest months (with the highest rainfall) are May and July (0.87").
The driest month (with the least rainfall) is January (0.16").

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Average rainfall days
Louisville, CO

Average rainfall days - Louisville, CO

The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is November (3.5 days).

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Average snowfall
Louisville, CO

Average snowfall - Louisville, CO

The month with the highest snowfall is February (2.68").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Louisville, CO

Average snowfall days - Louisville, CO

The month with the highest number of snowfall days is February (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Louisville, CO

Average daylight / Average sunshine - Louisville, CO

The month with the longest days is June (Average daylight: 14h and 58min).
The month with the shortest days is December (Average daylight: 9h and 23min).

The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).

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Average sunshine days
Louisville, CO

Average sunshine days - Louisville, CO

The month with the most sunshine days is November (23.7 days).
The month with the least sunshine days is July (10 days).

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Average UV index
Louisville, CO

Average UV index - Louisville, CO

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average visibility
Louisville, CO

Average visibility - Louisville, CO

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

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