May weather forecastHoly Cross, IA
May
Weather in May
May, the last month of the spring in Holy Cross, is an enjoyable month, with an average temperature fluctuating between 50.5°F (10.3°C) and 66.7°F (19.3°C).Temperature
The start of May brings a shift in the average high-temperature, increasing from April's refreshing 55.9°F (13.3°C) to a comfortable 66.7°F (19.3°C). Holy Cross throughout May, records an average low-temperature of 50.5°F (10.3°C).Humidity
In Holy Cross, the average relative humidity in May is 81%.Rainfall
May is the month with the most rainfall. Rain falls for 19.9 days and accumulates 4.72" (120mm) of precipitation.Snowfall
In Holy Cross, snow does not fall in May through September.Daylight
The average length of the day in May in Holy Cross is 14h and 38min.On the first day of the month, sunrise is at 5:57 am and sunset at 8:04 pm. On the last day of May, sunrise is at 5:28 am and sunset at 8:34 pm CDT.
Sunshine
In Holy Cross, the average sunshine in May is 8.1h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: A maximum high daily UV index of 5 during May translates into the following directions:
Ensure safety - Sun damage prevention is strongly urged. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Holy Cross, IA
- Average high temperature in May: 66.7°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 (24.3°F).
- Average low temperature in May: 50.5°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).
Average pressure in May
Holy Cross, IA
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in May
Holy Cross, IA
- Average wind speed in May: 9.1mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in May
Holy Cross, IA
- Average humidity in May: 81%
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall in May
Holy Cross, IA
- Average rainfall in May: 4.72"
The wettest month (with the highest rainfall) is May (4.72").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days in May
Holy Cross, IA
- Average rainfall days in May: 19.9 days
The months with the highest number of rainy days are May and June (19.9 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in May
Holy Cross, IA
- Average snowfall in May: 0"
The month with the highest snowfall is January (6.22").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Holy Cross, IA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (14 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Holy Cross, IA
- Average daylight in May: 14h and 36min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 6min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in May
Holy Cross, IA
- Average sunshine days in May: 9 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (7.8 days).
Average UV index in May
Holy Cross, IA
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in May
Holy Cross, IA
- Average cloud cover in May: 46
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility in May
Holy Cross, IA
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
