Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
A slight uplift in the average high-temperature marks May, adjusting from April's cool 52.3°F (11.3°C) to a comfortable 61°F (16.1°C). In May, Jamestown experiences a significant drop from daily zeniths to an average nighttime temperature of 38.7°F (3.7°C).Humidity
In Jamestown, the average relative humidity in May 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
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 1.7 snowfall days, in May, Jamestown aggregates 1.65" (42mm) of snow. In Jamestown, during the entire year, snow falls for 44.8 days and aggregates up to 37.01" (940mm) of snow.Daylight
The average length of the day in May is 14h and 25min.On the first day of the month, sunrise is at 6:00 am and sunset at 7:56 pm. On the last day of May, sunrise is at 5:34 am and sunset at 8:24 pm MDT.
Sunshine
The average sunshine in May is 10.7h.UV index
The average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In May, the maximum UV index of 4 transforms into these recommendations:
Take necessary precautions - Defending against sun damage is advocated. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May?
What is the rainiest month?
How much does it rain in May?
What is the last month it snows?
How many hours of daylight does Jamestown have in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Jamestown have in May?
How high is the UV index in May?
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).
Average pressure in May
Jamestown, CO
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are April, May and June (29.92"Hg).
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).
Average humidity in May
Jamestown, CO
- Average humidity in May: 58%
The month with the highest relative humidity is February (70%).
The months with the lowest relative humidity are June, August and September (45%).
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").
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).
Average snowfall in May
Jamestown, CO
- Average snowfall in May: 1.65"
The month with the highest snowfall is April (7.76").
The months with the least snowfall are June, July, August and September (0").
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).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Jamestown, CO
- Average daylight in May: 14h and 2min
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).
- Average sunshine in May: 10h and 4min
The months with the most sunshine are June and July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
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).
Average UV index in May
Jamestown, CO
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Jamestown, CO
- Average cloud cover in May: 28
The 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).
Average visibility in May
Jamestown, 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).
Jamestown, Colorado, USA
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