Monthly weather forecast and climate
Lewis, CO

Weather in January

January, the same as December, is a wintry winter month in Lewis, Colorado, with average temperature varying between 35.1°F (1.7°C) and 19.8°F (-6.8°C). January is the coldest month, with an average high-temperature of 35.1°F (1.7°C) and an average low-temperature of 19.8°F (-6.8°C). Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Lewis, Colorado, with average temperature varying between 39.4°F (4.1°C) and 23.7°F (-4.6°C). In Lewis, the average high-temperature in February is relatively the same as in January - a still wintry 39.4°F (4.1°C). Weather in February »

Weather in March

March, the first month of the spring, in Lewis, is a cool month, with average temperature ranging between max 50.2°F (10.1°C) and min 31.8°F (-0.1°C). In March, the average high-temperature increases, from a wintry 39.4°F (4.1°C) in February, to a fresh 50.2°F (10.1°C). Weather in March »

Weather in April

April in Lewis, Colorado, is a moderate spring month, with average temperature varying between 37.4°F (3°C) and 58.8°F (14.9°C). In April, the average high-temperature marginally rises, from a cool 50.2°F (10.1°C) in March, to a mild 58.8°F (14.9°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Lewis, Colorado, with average temperature fluctuating between 68.5°F (20.3°C) and 44.6°F (7°C). In May, the average high-temperature increases, from a moderate 58.8°F (14.9°C) in April, to a pleasant 68.5°F (20.3°C). Weather in May »

Weather in June

June, the first month of the summer, in Lewis, is a moderately hot month, with average temperature varying between 82°F (27.8°C) and 55°F (12.8°C). In Lewis, the average high-temperature in June increases, from an agreeable 68.5°F (20.3°C) in May, to a moderately hot 82°F (27.8°C). Weather in June »

Weather in July

July, like June, in Lewis, Colorado, is another warm summer month, with average temperature ranging between min 61.5°F (16.4°C) and max 84.7°F (29.3°C). July is the warmest month, with an average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 61.5°F (16.4°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Lewis, Colorado, with average temperature fluctuating between 60.4°F (15.8°C) and 82°F (27.8°C). In Lewis, the average high-temperature is relatively the same as in July - a still warm 82°F (27.8°C). Weather in August »

Weather in September

September, the first month of the autumn, in Lewis, is still a warm month, with temperature in the range of an average low of 54.1°F (12.3°C) and an average high of 75°F (23.9°C). In September, the average high-temperature slightly decreases, from a moderately hot 82°F (27.8°C) in August, to a still warm 75°F (23.9°C). Weather in September »

Weather in October

October, like September, in Lewis, Colorado, is another enjoyable autumn month, with average temperature fluctuating between 61.2°F (16.2°C) and 41.7°F (5.4°C). In Lewis, the average high-temperature in October decreases, from a warm 75°F (23.9°C) in September, to an enjoyable 61.2°F (16.2°C). Weather in October »

Weather in November

November, the last month of the autumn, in Lewis, is another chilly month, with average temperature varying between 49.5°F (9.7°C) and 30.7°F (-0.7°C). In Lewis, Colorado, the average high-temperature drops, from a comfortable 61.2°F (16.2°C) in October, to a chilly 49.5°F (9.7°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Lewis, Colorado, with average temperature ranging between min 21.7°F (-5.7°C) and max 37.2°F (2.9°C). In Lewis, the average high-temperature decreases, from a chilly 49.5°F (9.7°C) in November, to a cold 37.2°F (2.9°C). Weather in December »
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FAQ

What is the coldest month in Lewis?

With an average high-temperature of 35.1°F (1.7°C) and an average low-temperature of 19.8°F (-6.8°C), January is the coldest month.

What is the most humid month in Lewis?

The most humid month in Lewis, Colorado, is January, with an average relative humidity of 73%.

How many days does it rain in Lewis?

Throughout the year, there are 78.9 rainfall days, and 9.84" (250mm) of precipitation is accumulated.

What is the rainiest month in Lewis?

Months with the most rainfall are January and December, with an average 1.26" (32mm) of precipitation.

When does it snow in Lewis?

January through April, October through December are months with snowfall in Lewis, Colorado.

How much does it snow in Lewis?

In Lewis, Colorado, during the entire year, snow falls for 34.4 days, and aggregates up to 29.29" (744mm) of snow.

What is the snowiest month in Lewis?

The month with the most snowfall in Lewis, Colorado, is January when snow falls for 8.5 days and typically aggregates up to 8.11" (206mm) of snow.

What is the month with the least sunshine in Lewis?

Months with the least sunshine in Lewis, Colorado, are January and December, with an average of 6.5h of sunshine.

When is the lowest UV index in Lewis?

Months with the lowest UV index in Lewis, Colorado, are January, February, November and December, with an average maximum UV index of 2.

When it does not snow in Lewis?

In Lewis snow does not fall in May through September.

What is the least humid month in Lewis?

June is the least humid month in Lewis, with an average relative humidity of 26%.

What is the driest month in Lewis?

June is the month with the least rainfall in Lewis, Colorado. Rain falls for 2.8 days and accumulates 0.2" (5mm) of precipitation.

When are the longest days in Lewis?

With an average of 14.7h of daylight, June has the longest days of the year in Lewis, Colorado.

What month has the most sunshine in Lewis?

The month with the most sunshine is June, with an average of 12.1h of sunshine.

When is the highest UV index in Lewis?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Lewis.

What is the warmest month in Lewis?

With an average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 61.5°F (16.4°C), July is the warmest month.

What is the month with the shortest days in Lewis?

December has the shortest days of the year in Lewis, Colorado, with an average of 9.6h of daylight.

Average pressure
Lewis, CO

Average pressure - Lewis, CO

The month with the highest atmospheric pressure is January (30.23").
The month with the lowest atmospheric pressure is June (29.87").

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Average wind speed
Lewis, CO

Average wind speed - Lewis, CO

The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is January (5.7mph).

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Average rainfall
Lewis, CO

Average rainfall - Lewis, CO

The wettest months (with the highest rainfall) are January and December (1.26").
The driest month (with the least rainfall) is June (0.2").

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Average rainfall days
Lewis, CO

Average rainfall days - Lewis, CO

The month with the highest number of rainy days is July (9.6 days).
The month with the least rainy days is June (2.8 days).

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Average snowfall
Lewis, CO

Average snowfall - Lewis, CO

The month with the highest snowfall is January (8.11").
Months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days
Lewis, CO

Average snowfall days - Lewis, CO

Months with the highest number of snowfall days are January and December (8.5 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight / Average sunshine
Lewis, CO

Average daylight / Average sunshine - Lewis, CO

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

The month with the most sunshine is June (Average sunshine: 12.1h).
Months with the least sunshine are January and December (Average sunshine: 6.5).

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Average sunshine days
Lewis, CO

Average sunshine days - Lewis, CO

The month with the most sunshine days is June (26.2 days).
The month with the least sunshine days is February (17.6 days).

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Average UV index
Lewis, CO

Average UV index - Lewis, CO

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average visibility
Lewis, CO

Average visibility - Lewis, 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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