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
May in Castle Rock witnesses a subtle temperature ascent, adjusting from a moderate 56.8°F (13.8°C) in April to an enjoyable 65.5°F (18.6°C). Castle Rock experiences a significant reduction from daytime highs with an average low-temperature of 41.2°F (5.1°C) in May.Humidity
In Castle Rock, Colorado, the average relative humidity in May is 54%.Rainfall
May is the month with the most rainfall in Castle Rock. Rain falls for 14.8 days and accumulates 2.24" (57mm) of precipitation.Snowfall
Months with snowfall in Castle Rock, Colorado, are January through June, October through December. In May, in Castle Rock, it is snowing for 1.8 days. Throughout May, 3.46" (88mm) of snow is accumulated. Throughout the year, there are 51 snowfall days, and 40.43" (1027mm) of snow is accumulated.Daylight
In Castle Rock, Colorado, the average length of the day in May is 14h and 22min.On the first day of May in Castle Rock, 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 8:19 pm MDT.
Sunshine
In May, the average sunshine is 11.1h.UV index
In May, the average daily maximum UV index in Castle Rock is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. To avoid the Sun's strongest rays, limit exposure around the mid-day period. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Castle Rock?
What is the average humidity in May in Castle Rock?
What is the rainiest month in Castle Rock?
How much does it rain in Castle Rock in May?
How much does it snow in Castle Rock in May?
What is the average length of the day in May in Castle Rock?
When are sunrise and sunset in May in Castle Rock?
How long on average sun shines in May in Castle Rock?
What is the UV index intensity in May in Castle Rock?
Average temperature in May
Castle Rock, CO
- Average high temperature in May: 65.5°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is December (39.6°F).
- Average low temperature in May: 41.2°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is December (20.1°F).
Average pressure in May
Castle Rock, 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).
Average wind speed in May
Castle Rock, CO
- Average wind speed in May: 7.1mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest months (with the lowest average wind speed) are July, August and September (6.5mph).
Average humidity in May
Castle Rock, CO
- Average humidity in May: 54%
The month with the highest relative humidity is February (66%).
The months with the lowest relative humidity are June and September (45%).
Average rainfall in May
Castle Rock, CO
- Average rainfall in May: 2.24"
The wettest month (with the highest rainfall) is May (2.24").
The driest months (with the least rainfall) are January and December (0.55").
Average rainfall days in May
Castle Rock, CO
- Average rainfall days in May: 14.8 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is November (3 days).
Average snowfall in May
Castle Rock, CO
- Average snowfall in May: 3.46"
The month with the highest snowfall is April (7.13").
The months with the least snowfall are July, August and September (0").
Average snowfall days in May
Castle Rock, CO
- Average snowfall days in May: 1.8 days
The month with the highest number of snowfall days is February (9.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Castle Rock, 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, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in May
Castle Rock, CO
- Average sunshine days in May: 12 days
The month with the most sunshine days is November (22.8 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in May
Castle Rock, CO
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in May
Castle Rock, CO
- Average cloud cover in May: 26
The month with the most cloud cover is April (Cloud cover 27).
The month with the least cloud cover is September (Cloud cover 15).
Average visibility in May
Castle Rock, 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).
Castle Rock, Colorado, USA
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