Monthly weather forecast and climate
Derby, CO

Weather in January

January, like December, in Derby, Colorado, is a wintry winter month, with average temperature ranging between max 42.4°F (5.8°C) and min 23.2°F (-4.9°C). In Derby, the average high-temperature is relatively the same as in December - a still wintry 42.4°F (5.8°C). Weather in January »

Weather in February

February, the last month of the winter, in Derby, is another cold month, with average temperature fluctuating between 22.5°F (-5.3°C) and 42.4°F (5.8°C). In February, the average high-temperature remains the same as in January - a still wintry 42.4°F (5.8°C). Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in Derby, Colorado, with average temperature ranging between min 31.5°F (-0.3°C) and max 54.1°F (12.3°C). In March, the average high-temperature increases, from a wintry 42.4°F (5.8°C) in February, to a fresh 54.1°F (12.3°C). Weather in March »

Weather in April

April in Derby, Colorado, is a mild spring month, with average temperature varying between 36.1°F (2.3°C) and 60.3°F (15.7°C). In Derby, the average high-temperature in April slightly increases, from a cool 54.1°F (12.3°C) in March, to a moderate 60.3°F (15.7°C). Weather in April »

Weather in May

May, the last month of the spring, in Derby, is an agreeable month, with average temperature ranging between min 44.4°F (6.9°C) and max 69.1°F (20.6°C). In Derby, the average high-temperature in May marginally rises, from a mild 60.3°F (15.7°C) in April, to an agreeable 69.1°F (20.6°C). Weather in May »

Weather in June

June, the first month of the summer, in Derby, is a moderately hot month, with temperature in the range of an average high of 84.2°F (29°C) and an average low of 56.5°F (13.6°C). In Derby, the average high-temperature significantly increases, from an agreeable 69.1°F (20.6°C) in May, to a warm 84.2°F (29°C). Weather in June »

Weather in July

July is a hot summer month in Derby, Colorado, with average temperature ranging between min 61.7°F (16.5°C) and max 88.3°F (31.3°C). With an average high-temperature of 88.3°F (31.3°C) and an average low-temperature of 61.7°F (16.5°C), July is the warmest month. The average heat index is appraised at a hot 88.9°F (31.6°C). Weather in July »

Weather in August

The last month of the summer, August, is another tropical month in Derby, Colorado, with temperature in the range of an average high of 87.1°F (30.6°C) and an average low of 60.3°F (15.7°C). In August, the average high-temperature is practically the same as in July - a still hot 87.1°F (30.6°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Derby, Colorado, with average temperature varying between 79.5°F (26.4°C) and 53.8°F (12.1°C). In Derby, Colorado, the average high-temperature slightly decreases, from a tropical 87.1°F (30.6°C) in August, to a warm 79.5°F (26.4°C). Weather in September »

Weather in October

October, like September, in Derby, Colorado, is another comfortable autumn month, with average temperature ranging between min 40.1°F (4.5°C) and max 63.3°F (17.4°C). In October, the average high-temperature significantly decreases, from a moderately hot 79.5°F (26.4°C) in September, to an enjoyable 63.3°F (17.4°C). Weather in October »

Weather in November

November, the last month of the autumn, in Derby, is also a fresh month, with temperature in the range of an average high of 52.7°F (11.5°C) and an average low of 30.6°F (-0.8°C). In November, the average high-temperature decreases, from an enjoyable 63.3°F (17.4°C) in October, to a fresh 52.7°F (11.5°C). Weather in November »

Weather in December

December, the first month of the winter, in Derby, is also a wintry month, with temperature in the range of an average low of 21.9°F (-5.6°C) and an average high of 41.2°F (5.1°C). With an average high-temperature of 41.2°F (5.1°C) and an average low-temperature of 21.9°F (-5.6°C), December is the coldest month. Weather in December »
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FAQ

How much does it rain in Derby?

In Derby, during the entire year, the rain falls for 48.3 days and collects up to 3.19" (81mm) of precipitation.

What is the driest month in Derby?

January and December are months with the least rain when the rain falls for 2.3 days and typically aggregates up to 0.08" (2mm) of rain.

When does it snow in Derby?

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

How many days does it snow in Derby?

In Derby, during the entire year, snow falls for 19.6 days, and aggregates up to 8.5" (216mm) of snow.

What is the month with the lowest UV index in Derby?

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

What is the most humid month in Derby?

February is the most humid month in Derby, with an average relative humidity of 64%.

What is the month with the least sunshine in Derby?

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

When it does not snow in Derby?

June through September are months without snowfall in Derby.

When are the longest days in Derby?

With an average of 15h of daylight, June has the longest days of the year.

What are the months with the most sunshine in Derby?

June and July, with an average of 11.9h of sunshine, are months with the most sunshine.

When is the highest UV index in Derby?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the warmest month in Derby?

July is the warmest month, with an average high-temperature of 88.3°F (31.3°C) and an average low-temperature of 61.7°F (16.5°C).

What is the wettest month in Derby?

The month with the most rainfall in Derby, Colorado, is July when the rain falls for 8.2 days and typically aggregates up to 0.59" (15mm) of precipitation.

What is the least humid month in Derby?

With an average relative humidity of 39%, August is the least humid month in Derby.

What is the snowiest month in Derby?

October is the month with the most snowfall in Derby. Snow falls for 1.7 days and accumulates 1.42" (36mm) of snow.

What is the coldest month in Derby?

With an average high-temperature of 41.2°F (5.1°C) and an average low-temperature of 21.9°F (-5.6°C), December is the coldest month in Derby, Colorado.

What is the month with the shortest days in Derby?

December has the shortest days of the year in Derby, with an average of 9.4h of daylight.

Average temperature
Derby, CO

Average temperature - Derby, CO

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (41.2°F).

The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).

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Average pressure
Derby, CO

Average pressure - Derby, CO

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

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Average wind speed
Derby, CO

Average wind speed - Derby, CO

The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).

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Average rainfall
Derby, CO

Average rainfall - Derby, CO

The wettest month (with the highest rainfall) is July (0.59").
The driest months (with the least rainfall) are January and December (0.08").

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Average rainfall days
Derby, CO

Average rainfall days - Derby, CO

The month with the highest number of rainy days is July (8.2 days).
The month with the least rainy days is February (1.2 days).

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Average snowfall
Derby, CO

Average snowfall - Derby, CO

The month with the highest snowfall is October (1.42").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Derby, CO

Average snowfall days - Derby, CO

The month with the highest number of snowfall days is February (4.7 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Derby, CO

Average daylight / Average sunshine - Derby, CO

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

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

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Average sunshine days
Derby, CO

Average sunshine days - Derby, CO

The month with the most sunshine days is December (28.5 days).
The month with the least sunshine days is July (19.6 days).

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Average UV index
Derby, CO

Average UV index - Derby, CO

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

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Average visibility
Derby, CO

Average visibility - Derby, 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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