Monthly weather forecast and climate
Hamilton, CO

Weather in January

January, the same as December, in Hamilton, Colorado, is another subzero cold winter month, with temperature in the range of an average high of 28.8°F (-1.8°C) and an average low of 10.9°F (-11.7°C). With an average high-temperature of 28.8°F (-1.8°C) and an average low-temperature of 10.9°F (-11.7°C), January is the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Hamilton, Colorado, with average temperature fluctuating between 30.6°F (-0.8°C) and 13.5°F (-10.3°C). In Hamilton, the average high-temperature is almost the same as in January - a still freezing cold 30.6°F (-0.8°C). Weather in February »

Weather in March

The first month of the spring, March, is a cold month in Hamilton, Colorado, with average temperature varying between 23.4°F (-4.8°C) and 40.3°F (4.6°C). In March, the average high-temperature increases, from a subzero cold 30.6°F (-0.8°C) in February, to a wintry 40.3°F (4.6°C). Weather in March »

Weather in April

April in Hamilton, Colorado, is a fresh spring month, with average temperature varying between 30.7°F (-0.7°C) and 50.2°F (10.1°C). In April, the average high-temperature increases, from a wintry 40.3°F (4.6°C) in March, to a fresh 50.2°F (10.1°C). Weather in April »

Weather in May

May, the last month of the spring, in Hamilton, is a comfortable month, with average temperature fluctuating between 37.9°F (3.3°C) and 61.3°F (16.3°C). In May, the average high-temperature increases, from a cool 50.2°F (10.1°C) in April, to a comfortable 61.3°F (16.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Hamilton, Colorado, with average temperature ranging between max 74.5°F (23.6°C) and min 45.9°F (7.7°C). In June, the average high-temperature rises, from a comfortable 61.3°F (16.3°C) in May, to a moderately hot 74.5°F (23.6°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Hamilton, Colorado, with temperature in the range of an average low of 51.8°F (11°C) and an average high of 82.4°F (28°C). The warmest month is July, with an average high-temperature of 82.4°F (28°C) and an average low-temperature of 51.8°F (11°C). The average heat index is appraised at 82.2°F (27.9°C). Weather in July »

Weather in August

August, the last month of the summer, in Hamilton, is another warm month, with average temperature varying between 80.6°F (27°C) and 51.3°F (10.7°C). In August, the average high-temperature is almost the same as in July - a still warm 80.6°F (27°C). Weather in August »

Weather in September

September, the first month of the autumn, in Hamilton, is also an agreeable month, with average temperature fluctuating between 72.5°F (22.5°C) and 46.2°F (7.9°C). In Hamilton, the average high-temperature marginally drops, from a moderately hot 80.6°F (27°C) in August, to a pleasant 72.5°F (22.5°C). Weather in September »

Weather in October

October, the same as September, is a cool autumn month in Hamilton, Colorado, with average temperature ranging between max 54.9°F (12.7°C) and min 34.7°F (1.5°C). In Hamilton, the average high-temperature significantly decreases, from an agreeable 72.5°F (22.5°C) in September, to a fresh 54.9°F (12.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a wintry month in Hamilton, Colorado, with average temperature fluctuating between 23.9°F (-4.5°C) and 41.4°F (5.2°C). In Hamilton, the average high-temperature drops, from a cool 54.9°F (12.7°C) in October, to a cold 41.4°F (5.2°C). Weather in November »

Weather in December

December, the first month of the winter, in Hamilton, is also a subzero cold month, with average temperature fluctuating between 28.9°F (-1.7°C) and 12.7°F (-10.7°C). In Hamilton, the average high-temperature in December decreases, from a wintry 41.4°F (5.2°C) in November, to a subzero cold 28.9°F (-1.7°C). Weather in December »
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FAQ

What is the coldest month in Hamilton?

With an average high-temperature of 28.8°F (-1.8°C) and an average low-temperature of 10.9°F (-11.7°C), January is the coldest month in Hamilton, Colorado.

What is the most humid month in Hamilton?

January and February, with an average relative humidity of 84%, are most humid months in Hamilton.

How many days does it rain in Hamilton?

Throughout the year, in Hamilton, Colorado, there are 76.8 rainfall days, and 9.88" (251mm) of precipitation is accumulated.

When does it snow in Hamilton?

January through May, September through December are months with snowfall in Hamilton.

How much does it snow in Hamilton?

Throughout the year, in Hamilton, Colorado, there are 68.6 snowfall days, and 41.3" (1049mm) of snow is accumulated.

What are the months with the lowest UV index in Hamilton?

Months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2.

What is the month with the least sunshine in Hamilton?

The month with the least sunshine in Hamilton is February, with an average of 5.3h of sunshine.

What is the rainiest month in Hamilton?

The month with the most rainfall in Hamilton, Colorado, is April when the rain falls for 10.8 days and typically aggregates up to 1.38" (35mm) of precipitation.

When it does not snow in Hamilton?

In Hamilton snow does not fall in June through August.

When are the longest days in Hamilton?

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

What is the warmest month in Hamilton?

The warmest month is July, with an average high-temperature of 82.4°F (28°C) and an average low-temperature of 51.8°F (11°C).

What month has the most sunshine in Hamilton?

The month with the most sunshine is July, with an average of 11.9h of sunshine.

What is the month with the highest UV index in Hamilton?

July is the month with the highest UV index, with an average maximum UV index of 6.

What is the least humid month in Hamilton?

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

What is the driest month in Hamilton?

August and September are months with the least rain in Hamilton when the rain falls for 7.4 days and typically aggregates up to 0.39" (10mm) of rain.

When does it snow the most in Hamilton?

The month with the most snowfall is December when snow falls for 11.9 days and typically aggregates up to 7.28" (185mm) of snow.

What is the month with the shortest days in Hamilton?

The month with the shortest days is December, with an average of 9.3h of daylight.

Average temperature
Hamilton, CO

Average temperature - Hamilton, CO

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (28.8°F).

The month with the highest average low temperature is July (51.8°F).
The coldest month (with the lowest average low temperature) is January (10.9°F).

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Average pressure
Hamilton, CO

Average pressure - Hamilton, CO

The month with the highest atmospheric pressure is January (30.27").
Months with the lowest atmospheric pressure are May and June (29.92").

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Average wind speed
Hamilton, CO

Average wind speed - Hamilton, CO

The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is January (5.2mph).

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Average humidity
Hamilton, CO

Average humidity - Hamilton, CO

Months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (41%).

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Average rainfall
Hamilton, CO

Average rainfall - Hamilton, CO

The wettest month (with the highest rainfall) is April (1.38").
The driest months (with the least rainfall) are August and September (0.39").

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Average rainfall days
Hamilton, CO

Average rainfall days - Hamilton, CO

The month with the highest number of rainy days is April (10.8 days).
The month with the least rainy days is January (3.1 days).

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Average snowfall
Hamilton, CO

Average snowfall - Hamilton, CO

The month with the highest snowfall is December (7.28").
Months with the least snowfall are June, July and August (0").

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Average snowfall days
Hamilton, CO

Average snowfall days - Hamilton, CO

The month with the highest number of snowfall days is February (13.8 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight / Average sunshine
Hamilton, CO

Average daylight / Average sunshine - Hamilton, CO

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

The month with the most sunshine is July (Average sunshine: 11.9h).
The month with the least sunshine is February (Average sunshine: 5.3h).

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Average sunshine days
Hamilton, CO

Average sunshine days - Hamilton, CO

The month with the most sunshine days is June (22.8 days).
The month with the least sunshine days is February (13.3 days).

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Average UV index
Hamilton, CO

Average UV index - Hamilton, CO

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average visibility
Hamilton, CO

Average visibility - Hamilton, CO

Months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
Months with the lowest visibility are January and February (4mi).

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