May weather forecast and climate
Jamestown, CO

Weather in May

The last month of the spring, May, is a comfortable month in Jamestown, Colorado, with average temperature ranging between min 38.7°F (3.7°C) and max 61°F (16.1°C).

Temperature

In Jamestown, the average high-temperature marginally rises, from a fresh 52.3°F (11.3°C) in April, to a comfortable 61°F (16.1°C). The average low-temperature, in Jamestown, is 38.7°F (3.7°C).

Humidity

In Jamestown, the average relative humidity is 58%.

Rainfall

The month with the most rainfall is May when the rain falls for 17.5 days and typically aggregates up to 2.48" (63mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Jamestown. May is the last month it regularly snows. During 1.7 snowfall days, in May, Jamestown aggregates 1.65" (42mm) of snow. Throughout the year, in Jamestown, there are 44.8 snowfall days, and 37.01" (940mm) of snow is accumulated.

Daylight

The average length of the day in Jamestown is 14.4h.

Sunshine

In Jamestown, Colorado, the average sunshine is 10.7h.

UV index

In Jamestown, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for the average person.
Note: In May, the average maximum UV index of 4 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in May in Jamestown?

In Jamestown, in May, the average high-temperature is 61°F (16.1°C), and the average low-temperature is 38.7°F (3.7°C).

What is the average humidity in May in Jamestown?

In Jamestown, the average relative humidity in May is 58%.

How many days does it rain in May in Jamestown?

In Jamestown, Colorado, in May, it is raining for 17.5 days, with typically 2.48" (63mm) of accumulated precipitation.

What is the rainiest month in Jamestown?

The month with the most rainfall in Jamestown is May when the rain falls for 17.5 days and typically aggregates up to 2.48" (63mm) of precipitation.

What is the last month it snows in Jamestown?

May is the last month it regularly snows in Jamestown, Colorado. During 1.7 snowfall days, in May, Jamestown aggregates 1.65" (42mm) of snow.

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

In Jamestown, the average length of the day in May is 14.4h.

How many hours of sunshine does Jamestown have in May?

The average sunshine in May is 10.7h.

What is the UV index reading in May in Jamestown?

In May, the average daily maximum UV index in Jamestown is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in May
Jamestown, CO

Average temperature in May - Jamestown, CO
  • Average high temperature in May: 61°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is December (35.2°F).

  • Average low temperature in May: 38.7°F

The month with the highest average low temperature is July (55.2°F).
The coldest month (with the lowest average low temperature) is February (18°F).

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Average pressure in May
Jamestown, CO

Average pressure in May - Jamestown, CO
  • Average pressure in May: 29.92"

The month with the highest atmospheric pressure is January (30.15").
Months with the lowest atmospheric pressure are April, May and June (29.92").

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Average wind speed in May
Jamestown, CO

Average wind speed in May - Jamestown, CO
  • Average wind speed in May: 5.7mph

The windiest month (with the highest average wind speed) is January (7.3mph).
The calmest months (with the lowest average wind speed) are May, July, August and September (5.7mph).

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Average humidity in May
Jamestown, CO

Average humidity in May - Jamestown, CO
  • Average humidity in May: 58%

The month with the highest relative humidity is February (70%).
Months with the lowest relative humidity are June, August and September (45%).

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Average rainfall in May
Jamestown, CO

Average rainfall in May - Jamestown, CO
  • Average rainfall in May: 2.48"

The wettest month (with the highest rainfall) is May (2.48").
The driest month (with the least rainfall) is January (0.39").

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Average rainfall days in May
Jamestown, CO

Average rainfall days in May - Jamestown, CO
  • Average rainfall days in May: 17.5 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (3.3 days).

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Average snowfall in May
Jamestown, CO

Average snowfall in May - Jamestown, CO
  • Average snowfall in May: 1.65"

The month with the highest snowfall is April (7.76").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Jamestown, CO

Average snowfall days in May - Jamestown, CO
  • Average snowfall days in May: 1.7 days

The month with the highest number of snowfall days is February (10.3 days).
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
Jamestown, CO

Average daylight in May / Average sunshine in May - Jamestown, CO
  • Average daylight in May: 14.4h

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

  • Average sunshine in May: 10.7h

Months with the most sunshine are June and July (Average sunshine: 11.7h).
The month with the least sunshine is February (Average sunshine: 6.6h).

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Average sunshine days in May
Jamestown, CO

Average sunshine days in May - Jamestown, CO
  • Average sunshine days in May: 10.9 days

The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is July (9.9 days).

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Average UV index in May
Jamestown, CO

Average UV index in May - Jamestown, CO
  • Average UV index in May: 4

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in May
Jamestown, CO

Average cloud cover in May - Jamestown, CO
  • Average cloud cover in May: 28

Months with the most cloud cover are April and May (Cloud cover 28).
The month with the least cloud cover is September (Cloud cover 16).

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Average visibility in May
Jamestown, CO

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

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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