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
In May, the average high-temperature increases from a fresh 52.9°F (11.6°C) in April to a refreshing 65.8°F (18.8°C). Castle Rock experiences an average low-temperature of 49.1°F (9.5°C) in month of May.Humidity
In Castle Rock, Minnesota, the average relative humidity in May is 74%.Rainfall
In May, the rain falls for 16 days. Throughout May, 2.91" (74mm) of precipitation is accumulated. In Castle Rock, during the entire year, the rain falls for 126.4 days and collects up to 24.76" (629mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Castle Rock aggregates 0.47" (12mm) of snow. In Castle Rock, Minnesota, during the entire year, snow falls for 55.6 days and aggregates up to 22.36" (568mm) of snow.Daylight
In May, the average length of the day is 14h and 50min.On the first day of the month, sunrise is at 6:01 am and sunset at 8:17 pm. On the last day of May, sunrise is at 5:30 am and sunset at 8:50 pm CDT.
Sunshine
The average sunshine in May is 8.3h.UV index
In Castle Rock, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum daily UV index of 5 during May morphs into the following directions:
Undertake precautions - It is suggested to shield oneself from sunburn. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
How much does it rain in May?
What is the last month it snows?
How many hours of daylight does Castle Rock have in May?
When are sunrise and sunset in May?
How long on average sun shines in May in Castle Rock?
What is the UV index reading in May?
Average temperature in May
Castle Rock, MN
- Average high temperature in May: 65.8°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (20.8°F).
- Average low temperature in May: 49.1°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).
Average pressure in May
Castle Rock, MN
- Average pressure in May: 29.93"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Castle Rock, MN
- Average wind speed in May: 8.5mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in May
Castle Rock, MN
- Average humidity in May: 74%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and October (73%).
Average rainfall in May
Castle Rock, MN
- Average rainfall in May: 2.91"
The wettest month (with the highest rainfall) is June (4.21").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in May
Castle Rock, MN
- Average rainfall days in May: 16 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in May
Castle Rock, MN
- Average snowfall in May: 0.47"
The month with the highest snowfall is February (6.1").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Castle Rock, MN
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Castle Rock, MN
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in May
Castle Rock, MN
- Average sunshine days in May: 13.3 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in May
Castle Rock, MN
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in May
Castle Rock, MN
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in May
Castle Rock, MN
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Castle Rock, Minnesota, USA
Weather forecast for your location
2. Allow the app to use your location