May weather forecast
Castlewood, CO

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Weather in May

May, the last month of the spring in Castlewood, is an enjoyable month, with an average temperature fluctuating between 67.1°F (19.5°C) and 43.2°F (6.2°C).

Temperature

May's arrival brings a slight change in high-temperatures, adjusting from a moderate 58.8°F (14.9°C) in April to a comfortable 67.1°F (19.5°C). Castlewood's average low-temperature of 43.2°F (6.2°C) in May reflects a significant disparity from the daytime highs.

Humidity

The average relative humidity in May is 53%.

Rainfall

May is the month with the most rainfall. Rain falls for 14.2 days and accumulates 2.2" (56mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Castlewood. May is the last month it regularly snows in Castlewood. During 1.8 snowfall days, in May, Castlewood aggregates 3.7" (94mm) of snow. In Castlewood, during the entire year, snow falls for 46.5 days and aggregates up to 37.2" (945mm) of snow.

Daylight

In Castlewood, the average length of the day in May is 14h and 22min.
On the first day of May in Castlewood, sunrise is at 5:59 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:20 pm MDT.

Sunshine

The average sunshine in May in Castlewood is 11.2h.

UV index

In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 5 in May interprets into the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Frequently asked questions

What are May temperatures in Castlewood?

The high-temperature, in May, in Castlewood, is 67.1°F (19.5°C), while the low-temperature averages to 43.2°F (6.2°C).

What is the average humidity in May in Castlewood?

In Castlewood, Colorado, the average relative humidity in May is 53%.

What is the rainiest month in Castlewood?

The month with the most rainfall in Castlewood, Colorado, is May, when the rain falls for 14.2 days and typically aggregates up to 2.2" (56mm) of precipitation.

How much does it rain in Castlewood in May?

In Castlewood, Colorado, in May, it is raining for 14.2 days, with typically 2.2" (56mm) of accumulated precipitation.

What is the last month it snows in Castlewood?

May is the last month it regularly snows. During 1.8 snowfall days, in May, Castlewood aggregates 3.7" (94mm) of snow.

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

The average day length in May in Castlewood is 14h and 22min.

When are sunrise and sunset in May in Castlewood?

On the first day of May in Castlewood, sunrise is at 5:59 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:20 pm MDT.

How many hours of sunshine does Castlewood have in May?

In Castlewood, Colorado, the average sunshine duration in May is 11.2h.

What is the UV index intensity in May in Castlewood?

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

Average temperature in May
Castlewood, CO

Average temperature in May - Castlewood, CO
  • Average high temperature in May: 67.1°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (40.3°F).

  • Average low temperature in May: 43.2°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).

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Average pressure in May
Castlewood, CO

Average pressure in May - Castlewood, CO
  • Average pressure in May: 29.92"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).

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Average wind speed in May
Castlewood, CO

Average wind speed in May - Castlewood, CO
  • Average wind speed in May: 7mph

The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest months (with the lowest average wind speed) are August and December (6.5mph).

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Average humidity in May
Castlewood, CO

Average humidity in May - Castlewood, CO
  • Average humidity in May: 53%

The month with the highest relative humidity is February (65%).
The months with the lowest relative humidity are June, August and September (43%).

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Average rainfall in May
Castlewood, CO

Average rainfall in May - Castlewood, CO
  • Average rainfall in May: 2.2"

The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is September (0.47").

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Average rainfall days in May
Castlewood, CO

Average rainfall days in May - Castlewood, CO
  • Average rainfall days in May: 14.2 days

The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is November (3.4 days).

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Average snowfall in May
Castlewood, CO

Average snowfall in May - Castlewood, CO
  • Average snowfall in May: 3.7"

The month with the highest snowfall is April (6.34").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Castlewood, CO

Average snowfall days in May - Castlewood, CO
  • Average snowfall days in May: 1.8 days

The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in May / Average sunshine in May - Castlewood, CO
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in May: 11h and 1min

The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).

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Average sunshine days in May
Castlewood, CO

Average sunshine days in May - Castlewood, CO
  • Average sunshine days in May: 12.8 days

The month with the most sunshine days is November (23.2 days).
The month with the least sunshine days is April (12.7 days).

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Average UV index in May
Castlewood, CO

Average UV index in May - Castlewood, 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
Castlewood, CO

Average cloud cover in May - Castlewood, CO
  • Average cloud cover in May: 25

The month with the most cloud cover is April (Cloud cover 26).
The months with the least cloud cover are June and September (Cloud cover 15).

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Average visibility in May
Castlewood, CO

Average visibility in May - Castlewood, 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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Castlewood, Colorado, USA

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