Monthly weather forecast and climate
Jamestown, CO

Weather in January

January, the same as December, is another cold winter month in Jamestown, Colorado, with average temperature varying between 36.7°F (2.6°C) and 19°F (-7.2°C). In January, the average high-temperature is almost the same as in December - a still wintry 36.7°F (2.6°C). Weather in January »

Weather in February

February, the last month of the winter, in Jamestown, is another cold month, with average temperature varying between 36.1°F (2.3°C) and 18°F (-7.8°C). In Jamestown, the average high-temperature in February is almost the same as in January - a still cold 36.1°F (2.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Jamestown, Colorado, with temperature in the range of an average high of 46.4°F (8°C) and an average low of 26.1°F (-3.3°C). In March, the average high-temperature increases, from a cold 36.1°F (2.3°C) in February, to a chilly 46.4°F (8°C). Weather in March »

Weather in April

April in Jamestown, Colorado, is a fresh spring month, with average temperature varying between 30.7°F (-0.7°C) and 52.3°F (11.3°C). In Jamestown, the average high-temperature in April slightly increases, from a chilly 46.4°F (8°C) in March, to a cool 52.3°F (11.3°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Jamestown, Colorado, with average temperature ranging between min 38.7°F (3.7°C) and max 61°F (16.1°C). In Jamestown, the average high-temperature marginally rises, from a fresh 52.3°F (11.3°C) in April, to a comfortable 61°F (16.1°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Jamestown, Colorado, with average temperature fluctuating between 76.6°F (24.8°C) and 50°F (10°C). In June, the average high-temperature increases considerably, from an enjoyable 61°F (16.1°C) in May, to a warm 76.6°F (24.8°C). Weather in June »

Weather in July

July, like June, in Jamestown, Colorado, is a moderately hot summer month, with temperature in the range of an average high of 80.4°F (26.9°C) and an average low of 55.2°F (12.9°C). The warmest month is July, with an average high-temperature of 80.4°F (26.9°C) and an average low-temperature of 55.2°F (12.9°C). Weather in July »

Weather in August

August, the last month of the summer, in Jamestown, is also a moderately hot month, with average temperature ranging between min 54.1°F (12.3°C) and max 79.5°F (26.4°C). In Jamestown, the average high-temperature is essentially the same as in July - a still moderately hot 79.5°F (26.4°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in Jamestown, Colorado, with temperature in the range of an average high of 72.3°F (22.4°C) and an average low of 47.8°F (8.8°C). In Jamestown, Colorado, the average high-temperature in September slightly decreases, from a moderately hot 79.5°F (26.4°C) in August, to an agreeable 72.3°F (22.4°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in Jamestown, Colorado, with average temperature ranging between min 35.2°F (1.8°C) and max 57.2°F (14°C). In October, the average high-temperature significantly decreases, from a pleasant 72.3°F (22.4°C) in September, to a moderate 57.2°F (14°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Jamestown, Colorado, with average temperature ranging between min 26.4°F (-3.1°C) and max 46°F (7.8°C). In November, the average high-temperature decreases, from a mild 57.2°F (14°C) in October, to a chilly 46°F (7.8°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Jamestown, Colorado, with average temperature varying between 18.1°F (-7.7°C) and 35.2°F (1.8°C). With an average high-temperature of 35.2°F (1.8°C) and an average low-temperature of 18.1°F (-7.7°C), December is the coldest month. Weather in December »
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FAQ

How much does it rain in Jamestown?

Throughout the year, in Jamestown, Colorado, there are 117.3 rainfall days, and 14.17" (360mm) of precipitation is accumulated.

What is the driest month in Jamestown?

The month with the least rainfall is January when the rain falls for 4.3 days and typically collects 0.39" (10mm) of precipitation.

When does it snow in Jamestown?

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

How much does it snow in Jamestown?

In Jamestown, during the entire year, snow falls for 44.8 days, and aggregates up to 37.01" (940mm) of snow.

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

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

What is the most humid month in Jamestown?

February is the most humid month in Jamestown, with an average relative humidity of 70%.

What is the month with the least sunshine in Jamestown?

February has the least sunshine of the year in Jamestown, with an average of 6.6h of sunshine.

What is the snowiest month in Jamestown?

April is the month with the most snowfall in Jamestown, Colorado. Snow falls for 4.9 days and accumulates 7.76" (197mm) of snow.

What is the rainiest month in Jamestown?

The month with the most rainfall is May when the rain falls for 17.5 days and typically aggregates up to 2.48" (63mm) of precipitation.

What is the least humid month in Jamestown?

June, August and September, with an average relative humidity of 45%, are the least humid months in Jamestown.

When it does not snow in Jamestown?

June through September are months without snowfall in Jamestown, Colorado.

When are the longest days in Jamestown?

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

What are the months with the most sunshine in Jamestown?

June and July, with an average of 11.7h of sunshine, are months with the most sunshine in Jamestown, Colorado.

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

Months with the highest UV index are June through August, with an average maximum UV index of 5.

What is the warmest month in Jamestown?

The warmest month in Jamestown, Colorado, is July, with an average high-temperature of 80.4°F (26.9°C) and an average low-temperature of 55.2°F (12.9°C).

What is the coldest month in Jamestown?

The coldest month is December, with an average high-temperature of 35.2°F (1.8°C) and an average low-temperature of 18.1°F (-7.7°C).

What is the month with the shortest days in Jamestown?

With an average of 9.4h of daylight, December has the shortest days of the year.

Average pressure
Jamestown, CO

Average pressure - Jamestown, CO

The month with the highest atmospheric pressure is January (30.15").
Months with the lowest atmospheric pressure are April, May and June (29.92").

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Average wind speed
Jamestown, CO

Average wind speed - Jamestown, CO

The windiest month (with the highest average wind speed) is January (7.3mph).
The calmest months (with the lowest average wind speed) are May, July, August and September (5.7mph).

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Average humidity
Jamestown, CO

Average humidity - Jamestown, CO

The month with the highest relative humidity is February (70%).
Months with the lowest relative humidity are June, August and September (45%).

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Average rainfall
Jamestown, CO

Average rainfall - Jamestown, CO

The wettest month (with the highest rainfall) is May (2.48").
The driest month (with the least rainfall) is January (0.39").

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Average rainfall days
Jamestown, CO

Average rainfall days - Jamestown, CO

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (3.3 days).

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Average snowfall
Jamestown, CO

Average snowfall - Jamestown, CO

The month with the highest snowfall is April (7.76").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Jamestown, CO

Average snowfall days - Jamestown, CO

The month with the highest number of snowfall days is February (10.3 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight / Average sunshine
Jamestown, CO

Average daylight / Average sunshine - Jamestown, 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: 11.7h).
The month with the least sunshine is February (Average sunshine: 6.6h).

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Average sunshine days
Jamestown, CO

Average sunshine days - Jamestown, CO

The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is July (9.9 days).

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Average UV index
Jamestown, CO

Average UV index - Jamestown, CO

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average visibility
Jamestown, CO

Average visibility - Jamestown, 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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