Monthly weather forecast and climate
Grand Junction, CO

The unique beauty, at the scenic Grand Junction in Colorado, and the iconic Colorado River and high hills nearby, with distant hills
The unique beauty, at the scenic Grand Junction in Colorado, and the iconic Colorado River and high hills nearby, with distant hills
January, the same as December, is another cold winter month in Grand Junction, Colorado, with temperature in the range of an average low of 17.1°F (-8.3°C) and an average high of 37.8°F (3.2°C). The coldest month is January, with an average high-temperature of 37.8°F (3.2°C) and an average low-temperature of 17.1°F (-8.3°C). Weather in January »
The last month of the winter, February, is a chilly month in Grand Junction, Colorado, with temperature in the range of an average low of 23.7°F (-4.6°C) and an average high of 45.3°F (7.4°C). The average high-temperature, is 45.3°F (7.4°C), while the average low-temperature is 23.7°F (-4.6°C). Weather in February »

The first month of the spring, March, is a mild month in Grand Junction, Colorado, with temperature in the range of an average low of 31.5°F (-0.3°C) and an average high of 56.5°F (13.6°C). In Grand Junction, the average high-temperature is 56.5°F (13.6°C), and the average low-temperature is 31.5°F (-0.3°C). Weather in March »

April in Grand Junction, Colorado, is a comfortable spring month, with average temperature ranging between min. 38.1°F (3.4°C) and max. 65.3°F (18.5°C). The average high-temperature, in April, is 65.3°F (18.5°C), while the average low-temperature is 38.1°F (3.4°C). Weather in April »

The last month of the spring, May, is a warm month in Grand Junction, Colorado, with average temperature varying between 46.9°F (8.3°C) and 76.1°F (24.5°C). In May, the average high-temperature is 76.1°F (24.5°C), and the average low-temperature is 46.9°F (8.3°C). Weather in May »

June, the first month of the summer, in Grand Junction, is a hot month, with average temperature fluctuating between 87.6°F (30.9°C) and 56.3°F (13.5°C). The average high-temperature, in June, is 87.6°F (30.9°C), while the average low-temperature is 56.3°F (13.5°C). Weather in June »

July, the same as June, in Grand Junction, Colorado, is a hot summer month, with temperature in the range of an average low of 63.1°F (17.3°C) and an average high of 93.2°F (34°C). The warmest month is July, with an average high-temperature of 93.2°F (34°C) and an average low-temperature of 63.1°F (17.3°C). Weather in July »

The last month of the summer, August, is another hot month in Grand Junction, Colorado, with temperature in the range of an average high of 89.8°F (32.1°C) and an average low of 61.3°F (16.3°C). In August, the average high-temperature is 89.8°F (32.1°C), and the average low-temperature is 61.3°F (16.3°C). Weather in August »

The first month of the autumn, September, is also a warm month in Grand Junction, Colorado, with temperature in the range of an average high of 80.1°F (26.7°C) and an average low of 52°F (11.1°C). In Grand Junction, Colorado, in September, the average high-temperature is 80.1°F (26.7°C), and the average low-temperature is 52°F (11.1°C). Weather in September »

October, the same as September, is a comfortable autumn month in Grand Junction, Colorado, with average temperature ranging between min. 39.9°F (4.4°C) and max. 66.2°F (19°C). In Grand Junction, Colorado, the average high-temperature is 66.2°F (19°C), and the average low-temperature is 39.9°F (4.4°C). Weather in October »

November, the last month of the autumn, in Grand Junction, is also a fresh month, with temperature in the range of an average low of 27.7°F (-2.4°C) and an average high of 50.4°F (10.2°C). In Grand Junction, Colorado, the average high-temperature is 50.4°F (10.2°C), and the average low-temperature is 27.7°F (-2.4°C). Weather in November »

The first month of the winter, December, is also a cold month in Grand Junction, Colorado, with average temperature varying between 38.5°F (3.6°C) and 18.5°F (-7.5°C). The average high-temperature, in December, is 38.5°F (3.6°C), while the average low-temperature is 18.5°F (-7.5°C). Weather in December »

What is the coldest month in Grand Junction?

The coldest month in Grand Junction, Colorado, is January, with an average high-temperature of 37.8°F (3.2°C) and an average low-temperature of 17.1°F (-8.3°C).

What is the most humid month in Grand Junction?

With an average relative humidity of 69.7%, January is the most humid month in Grand Junction.

How much does it rain in Grand Junction?

In Grand Junction, Colorado, during the entire year, the rain falls for 74.3 days and collects up to 9.4" (239.2mm) of precipitation.

When does it snow in Grand Junction?

Months with snowfall in Grand Junction, Colorado, are January through May, October through December.

How many days does it snow in Grand Junction?

In Grand Junction, Colorado, during the entire year, snow falls for 19.1 days, and aggregates up to 19.1" (485.2mm) of snow.

What is the snowiest month in Grand Junction?

Months with the most snowfall are January and December, with an average 4.9" (124.5mm) of accumulated snow.

When is the lowest UV index in Grand Junction?

January and December, with an average UV index of 2, are months with the lowest UV index.

What is the least humid month in Grand Junction?

With an average relative humidity of 29.4%, June is the least humid month in Grand Junction, Colorado.

What is the driest month in Grand Junction?

June is the month with the least rainfall in Grand Junction. Rain falls for 4.1 days and accumulates 0.5" (11.7mm) of precipitation.

When are the longest days in Grand Junction?

June has the longest days of the year in Grand Junction, Colorado, with an average of 14.9h of daylight.

What month has the most sunshine in Grand Junction?

The month with the most sunshine in Grand Junction, Colorado, is June, with an average of 12h of sunshine.

What is the warmest month in Grand Junction?

With an average high-temperature of 93.2°F (34°C) and an average low-temperature of 63.1°F (17.3°C), July is the warmest month in Grand Junction, Colorado.

When is the highest UV index in Grand Junction?

The month with the highest UV index is July, with an average UV index of 11.

What is the wettest month in Grand Junction?

September is the month with the most rainfall. Rain falls for 7 days and accumulates 1.2" (30.2mm) of precipitation.

What is the month with the shortest days in Grand Junction?

December has the shortest days of the year in Grand Junction, with an average of 9.5h of daylight.

What is the month with the least sunshine in Grand Junction?

With an average of 5.8h of sunshine, December has the least sunshine of the year.
Average temperature - Grand Junction, CO
Average humidity - Grand Junction, CO
Average rainfall - Grand Junction, CO
Average rainfall days - Grand Junction, CO

Months with the highest number of rainy days are March and April (7.3 days).
The month with the lowest number of rainy days is June (4.1 days).

Average snowfall - Grand Junction, CO
Average snowfall days - Grand Junction, CO

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

Average daylight / Average sunshine - Grand Junction, CO
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