Monthly weather forecast and climate
Grand Lake, CO

Weather in January

January, like December, is another subzero cold winter month in Grand Lake, Colorado, with average temperature varying between 2.5°F (-16.4°C) and 23.7°F (-4.6°C). In Grand Lake, the average high-temperature is practically the same as in December - a still subzero cold 23.7°F (-4.6°C). Weather in January »

Weather in February

February, the last month of the winter, in Grand Lake, is also a subzero cold month, with temperature in the range of an average high of 24.3°F (-4.3°C) and an average low of 5°F (-15°C). In February, the average high-temperature is essentially the same as in January - a still freezing cold 24.3°F (-4.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a wintry month in Grand Lake, Colorado, with average temperature fluctuating between 12.4°F (-10.9°C) and 32.7°F (0.4°C). In Grand Lake, the average high-temperature in March slightly increases, from a subzero cold 24.3°F (-4.3°C) in February, to a cold 32.7°F (0.4°C). Weather in March »

Weather in April

April, like March, in Grand Lake, Colorado, is another cold spring month, with average temperature ranging between max 38.8°F (3.8°C) and min 18.3°F (-7.6°C). In Grand Lake, Colorado, the average high-temperature in April slightly increases, from a wintry 32.7°F (0.4°C) in March, to a still cold 38.8°F (3.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a fresh month in Grand Lake, Colorado, with average temperature fluctuating between 27.5°F (-2.5°C) and 51.4°F (10.8°C). In Grand Lake, the average high-temperature rises, from a wintry 38.8°F (3.8°C) in April, to a cool 51.4°F (10.8°C). Weather in May »

Weather in June

June, the first month of the summer, in Grand Lake, is a comfortable month, with average temperature ranging between min 37.6°F (3.1°C) and max 66.9°F (19.4°C). In June, the average high-temperature increases considerably, from a cool 51.4°F (10.8°C) in May, to a comfortable 66.9°F (19.4°C). Weather in June »

Weather in July

July is an agreeable summer month in Grand Lake, Colorado, with average temperature fluctuating between 72.1°F (22.3°C) and 42.6°F (5.9°C). July is the warmest month, with an average high-temperature of 72.1°F (22.3°C) and an average low-temperature of 42.6°F (5.9°C). Weather in July »

Weather in August

The last month of the summer, August, is also an agreeable month in Grand Lake, Colorado, with average temperature varying between 40.8°F (4.9°C) and 70.7°F (21.5°C). In Grand Lake, the average high-temperature is essentially the same as in July - a still agreeable 70.7°F (21.5°C). Weather in August »

Weather in September

September, the first month of the autumn, in Grand Lake, is still a comfortable month, with average temperature fluctuating between 63.7°F (17.6°C) and 36°F (2.2°C). In September, the average high-temperature marginally drops, from a pleasant 70.7°F (21.5°C) in August, to an enjoyable 63.7°F (17.6°C). Weather in September »

Weather in October

October, like September, is another chilly autumn month in Grand Lake, Colorado, with average temperature fluctuating between 24.3°F (-4.3°C) and 46.8°F (8.2°C). In October, the average high-temperature significantly decreases, from an enjoyable 63.7°F (17.6°C) in September, to a chilly 46.8°F (8.2°C). Weather in October »

Weather in November

November, the last month of the autumn, in Grand Lake, is also a wintry month, with average temperature varying between 34°F (1.1°C) and 13.8°F (-10.1°C). In Grand Lake, the average high-temperature in November decreases, from a chilly 46.8°F (8.2°C) in October, to a wintry 34°F (1.1°C). Weather in November »

Weather in December

The first month of the winter, December, is still a freezing cold month in Grand Lake, Colorado, with average temperature ranging between min 3.6°F (-15.8°C) and max 23.4°F (-4.8°C). December is the coldest month, with an average high-temperature of 23.4°F (-4.8°C) and an average low-temperature of 3.6°F (-15.8°C). Weather in December »
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FAQ

What are the most humid months in Grand Lake?

January and February, with an average relative humidity of 88%, are most humid months.

How much does it rain in Grand Lake?

In Grand Lake, Colorado, during the entire year, the rain falls for 82.5 days and collects up to 8.19" (208mm) of precipitation.

When does it snow in Grand Lake?

January through June, September through December are months with snowfall in Grand Lake, Colorado.

How much does it snow in Grand Lake?

Throughout the year, in Grand Lake, Colorado, there are 90.8 snowfall days, and 39.13" (994mm) of snow is accumulated.

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

February has the least sunshine of the year in Grand Lake, Colorado, with an average of 5.6h of sunshine.

What is the snowiest month in Grand Lake?

The month with the most snowfall in Grand Lake, Colorado, is April when snow falls for 11.8 days and typically aggregates up to 6.81" (173mm) of snow.

What is the least humid month in Grand Lake?

The least humid month in Grand Lake is June, with an average relative humidity of 49%.

When are the longest days in Grand Lake?

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

When is the highest UV index in Grand Lake?

Months with the highest UV index are June through August, with an average maximum UV index of 4.

What is the warmest month in Grand Lake?

With an average high-temperature of 72.1°F (22.3°C) and an average low-temperature of 42.6°F (5.9°C), July is the warmest month in Grand Lake.

What is the wettest month in Grand Lake?

July is the month with the most rainfall in Grand Lake. Rain falls for 13.5 days and accumulates 1.06" (27mm) of precipitation.

When it does not snow in Grand Lake?

In Grand Lake, Colorado, snow does not fall in July and August.

What month has the most sunshine in Grand Lake?

The month with the most sunshine is August, with an average of 11.8h of sunshine.

What is the driest month in Grand Lake?

Months with the least rainfall are September, November and December Rain falls for 6.4 days and accumulates 0.39" (10mm) of rain.

What is the coldest month in Grand Lake?

With an average high-temperature of 23.4°F (-4.8°C) and an average low-temperature of 3.6°F (-15.8°C), December is the coldest month in Grand Lake, Colorado.

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

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

What is the month with the lowest UV index in Grand Lake?

December is the month with the lowest UV index in Grand Lake, with an average maximum UV index of 1.

Average temperature
Grand Lake, CO

Average temperature - Grand Lake, CO

The warmest month (with the highest average high temperature) is July (72.1°F).
The month with the lowest average high temperature is December (23.4°F).

The month with the highest average low temperature is July (42.6°F).
The coldest month (with the lowest average low temperature) is January (2.5°F).

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Average pressure
Grand Lake, CO

Average pressure - Grand Lake, CO

The month with the highest atmospheric pressure is January (30.2").
Months with the lowest atmospheric pressure are April, May and June (29.93").

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Average wind speed
Grand Lake, CO

Average wind speed - Grand Lake, CO

The windiest month (with the highest average wind speed) is June (7mph).
The calmest months (with the lowest average wind speed) are July and August (5.4mph).

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Average humidity
Grand Lake, CO

Average humidity - Grand Lake, CO

Months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is June (49%).

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Average rainfall
Grand Lake, CO

Average rainfall - Grand Lake, CO

The wettest month (with the highest rainfall) is July (1.06").
The driest months (with the least rainfall) are September, November and December (0.39").

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Average rainfall days
Grand Lake, CO

Average rainfall days - Grand Lake, CO

The month with the highest number of rainy days is July (13.5 days).
The month with the least rainy days is November (3.3 days).

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Average snowfall
Grand Lake, CO

Average snowfall - Grand Lake, CO

The month with the highest snowfall is April (6.81").
Months with the least snowfall are July and August (0").

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Average snowfall days
Grand Lake, CO

Average snowfall days - Grand Lake, CO

The month with the highest number of snowfall days is February (13.8 days).
Months with the least snowfall days are July and August (0.1 days).

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Average daylight / Average sunshine
Grand Lake, CO

Average daylight / Average sunshine - Grand Lake, CO

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

The month with the most sunshine is August (Average sunshine: 11.8h).
The month with the least sunshine is February (Average sunshine: 5.6h).

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Average sunshine days
Grand Lake, CO

Average sunshine days - Grand Lake, CO

The month with the most sunshine days is November (21.4 days).
The month with the least sunshine days is July (13.1 days).

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Average visibility
Grand Lake, CO

Average visibility - Grand Lake, CO

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

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