May weather forecast
Lewis, CO

Weather in May

The last month of the spring, May, is a pleasant month in Lewis, Colorado, with an average temperature varying between 44.6°F (7°C) and 68.5°F (20.3°C).

Temperature

In Lewis, Colorado, the average high-temperature in May rises from a mild 58.8°F (14.9°C) in April to a pleasant 68.5°F (20.3°C). In Lewis, the average low-temperature is 44.6°F (7°C).

Humidity

The average relative humidity in May is 34%.

Rainfall

In Lewis, during 5.3 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, there are 78.9 rainfall days, and 9.84" (250mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In May, the average length of the day in Lewis is 14h and 13min.
On the first day of the month, sunrise is at 6:18 am and sunset at 8:04 pm. On the last day of May, sunrise is at 5:55 am and sunset at 8:29 pm MDT.

Sunshine

In Lewis, the average sunshine in May is 11.5h.

UV index

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the average humidity in May in Lewis?

In Lewis, Colorado, the average relative humidity in May is 34%.

How many days does it rain in May in Lewis?

In May, the rain falls for 5.3 days. Throughout May, 0.51" (13mm) of precipitation is accumulated.

When it does not snow in Lewis?

In Lewis, snow does not fall in May through September.

Does it snow in Lewis in May?

In May, it doesn't snow. April is the latest month when it typically snows.

What is the average length of the day in May in Lewis?

The average day length in May in Lewis is 14h and 13min.

What time are sunrise and sunset in May in Lewis?

On the first day of May, sunrise is at 6:18 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 8:29 pm MDT.

How long on average sun shines in May in Lewis?

The average sunshine duration in May is 11.5h.

What is the UV index intensity in May in Lewis?

In Lewis, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Lewis, CO

Average temperature in May - Lewis, CO
  • Average high temperature in May: 68.5°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in May: 44.6°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

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Average pressure in May
Lewis, CO

Average pressure in May - Lewis, CO
  • Average pressure in May: 29.88"Hg

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

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Average wind speed in May
Lewis, CO

Average wind speed in May - Lewis, CO
  • Average wind speed in May: 8.9mph

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 humidity in May
Lewis, CO

Average humidity in May - Lewis, CO
  • Average humidity in May: 34%

The month with the highest relative humidity is January (73%).
The month with the lowest relative humidity is June (26%).

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Average rainfall in May
Lewis, CO

Average rainfall in May - Lewis, CO
  • Average rainfall in May: 0.51"

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 in May
Lewis, CO

Average rainfall days in May - Lewis, CO
  • Average rainfall days in May: 5.3 days

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 in May
Lewis, CO

Average snowfall in May - Lewis, CO
  • Average snowfall in May: 0"

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

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Average snowfall days in May
Lewis, CO

Average snowfall days in May - Lewis, CO
  • Average snowfall days in May: 0 days

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

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Average daylight in May /
Average sunshine in May
Lewis, CO

Average daylight in May / Average sunshine in May - Lewis, CO
  • Average daylight in May: 14h and 13min

The month with the longest days is June (Average daylight: 14h and 43min).
The month with the shortest days is December (Average daylight: 9h and 38min).

  • Average sunshine in May: 11h and 30min

The month with the most sunshine is June (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 6h and 30min).

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Average sunshine days in May
Lewis, CO

Average sunshine days in May - Lewis, CO
  • Average sunshine days in May: 24.8 days

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 in May
Lewis, CO

Average UV index in May - Lewis, CO
  • Average UV index in May: 5

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

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Average cloud cover in May
Lewis, CO

Average cloud cover in May - Lewis, CO
  • Average cloud cover in May: 15

The months with the most cloud cover are January and December (Cloud cover 27).
The month with the least cloud cover is June (Cloud cover 9).

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Average visibility in May
Lewis, CO

Average visibility in May - Lewis, CO
  • Average visibility in May: 6mi

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

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