Climate and monthly weather forecast
Grand Lake, CO

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Weather in January

January, the same as December, in Grand Lake, Colorado, is another subzero cold winter month, with an average temperature varying between 2.5°F (-16.4°C) and 23.7°F (-4.6°C). Entering January, Grand Lake's average high-temperature reads a still freezing cold 23.7°F (-4.6°C), indicating a close resemblance to the previous month's climate. Weather in January »

Weather in February

The last month of the winter, February, is also a subzero cold month in Grand Lake, Colorado, 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). Grand Lake experiences an average high-temperature of a still subzero cold 24.3°F (-4.3°C) in February, subtly different from January's 23.7°F (-4.6°C). Weather in February »

Weather in March

The first month of the spring, March, is an icy month in Grand Lake, Colorado, with an average temperature ranging between min 12.4°F (-10.9°C) and max 32.7°F (0.4°C). As March begins, there's a slight increase in the average high-temperature, moving from a freezing cold 24.3°F (-4.3°C) in February to an icy 32.7°F (0.4°C). Weather in March »

Weather in April

April, the same as March, is a wintry spring month in Grand Lake, Colorado, with an average temperature varying between 38.8°F (3.8°C) and 18.3°F (-7.6°C). A gentle upsurge in temperatures occurs as March gives way to April, with average highs shifting from a cold 32.7°F (0.4°C) to a still icy 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 an average temperature ranging between min 27.5°F (-2.5°C) and max 51.4°F (10.8°C). As April transitions into May, Grand Lake sees a rise in the average high-temperature, moving from a wintry 38.8°F (3.8°C) 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 an enjoyable month, with an average temperature varying between 66.9°F (19.4°C) and 37.6°F (3.1°C). The shift into June brings a noticeable increase in the average high-temperature, soaring from a fresh 51.4°F (10.8°C) in May to a refreshing 66.9°F (19.4°C). Weather in June »

Weather in July

July is a pleasant summer month in Grand Lake, Colorado, with an average temperature varying between 72.1°F (22.3°C) and 42.6°F (5.9°C). July stands out as Grand Lake's warmest month, with an average high-temperature of 72.1°F (22.3°C) and a low-temperature of 42.6°F (5.9°C). Weather in July »

Weather in August

The last month of the summer, August, is another pleasant month in Grand Lake, Colorado, with an average temperature fluctuating between 40.8°F (4.9°C) and 70.7°F (21.5°C). Welcoming August, Grand Lake notes an average high-temperature of a still pleasant 70.7°F (21.5°C), nearly consistent with July's 72.1°F (22.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an enjoyable month in Grand Lake, Colorado, with an average temperature fluctuating between 63.7°F (17.6°C) and 36°F (2.2°C). The onset of September brings a small shift in high-temperatures, falling from a pleasant 70.7°F (21.5°C) in August to a comfortable 63.7°F (17.6°C). Weather in September »

Weather in October

October, the same as September, in Grand Lake, Colorado, is another chilly autumn month, with an average temperature ranging between min 24.3°F (-4.3°C) and max 46.8°F (8.2°C). In October, the meteorological conditions markedly change with the average high-temperature descending 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

The last month of the autumn, November, is also an icy month in Grand Lake, Colorado, with an average temperature fluctuating between 13.8°F (-10.1°C) and 34°F (1.1°C). In November, the average high-temperature 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

December, the first month of the winter in Grand Lake, is also a subzero cold month, with an average temperature ranging between min 3.6°F (-15.8°C) and max 23.4°F (-4.8°C). Grand Lake witnesses the coldest weather in December, with temperatures averaging a high of 23.4°F (-4.8°C) and a low of 3.6°F (-15.8°C). Weather in December »
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the most humid month in Grand Lake?

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

How many days does it rain?

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

When does it snow?

Months with snowfall are January through June, September through December.

How many days does it snow?

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

What is the month with the least sunshine?

With an average of 5.6h of sunshine, February has the least sunshine of the year.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.

When does it snow the most?

April is the month with the most snowfall. Snow falls for 11.8 days and accumulates 6.81" (173mm) of snow.

What is the least humid month?

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

When are the longest days in Grand Lake?

The month with the longest days is June, with an average of 15h and 0min of daylight.

When is the highest UV index?

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

What are the warmest months?

In Grand Lake, July is identified by the average highest temperatures, reaching a peak of 72.1°F (22.3°C) and a low of 42.6°F (5.9°C).

What is the rainiest month?

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

When it does not snow?

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

What month has the most sunshine?

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

What is the driest month?

The 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 time of year?

The month of December sees the average lowest temperatures, reaching 23.4°F (-4.8°C) at the peak and 3.6°F (-15.8°C) at the low.

What is the month with the shortest days?

With an average of 9h and 24min of daylight, December has the shortest days of the year.

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

With an average maximum UV index of 1, December is the month with the lowest UV index.

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).

Average pressure
Grand Lake, CO

Average pressure - Grand Lake, CO

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

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).

Average humidity
Grand Lake, CO

Average humidity - Grand Lake, CO

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

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").

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).

Average snowfall
Grand Lake, CO

Average snowfall - Grand Lake, CO

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

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).
The months with the least snowfall days are July and August (0.1 days).

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 and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).

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).

Average visibility
Grand Lake, CO

Average visibility - Grand Lake, CO

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

Grand Lake, Colorado, USA

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