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's arrival brings a change in high-temperatures, moving from a mild 59.7°F (15.4°C) in April to an agreeable 69.3°F (20.7°C). In Cromwell, the expected average low-temperature for May is a cool 52.7°F (11.5°C).Humidity
In Cromwell, the average relative humidity in May is 79%.Rainfall
In Cromwell, during May, the rain falls for 17.4 days and regularly aggregates up to 3.62" (92mm) of precipitation. In Cromwell, Iowa, during the entire year, the rain falls for 127.7 days and collects up to 23.39" (594mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Cromwell. May is the last month it regularly snows. During 0.2 snowfall days, in May, Cromwell aggregates 0.31" (8mm) of snow. In Cromwell, during the entire year, snow falls for 32.6 days and aggregates up to 12.01" (305mm) of snow.Daylight
In May, the average length of the day in Cromwell is 14h and 30min.On the first day of the month, sunrise is at 6:14 am and sunset at 8:15 pm. On the last day of May, in Cromwell, sunrise is at 5:47 am and sunset at 8:43 pm CDT.
Sunshine
In Cromwell, Iowa, the average sunshine in May is 8.3h.UV index
In May, the average daily maximum UV index in Cromwell is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, the maximum UV index of 5 suggests these recommendations:
Make use of precautions - It is urged to ward off sun damage. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
What are the temperatures in Cromwell in May?
What is the average humidity in May in Cromwell?
How many days does it rain in May in Cromwell?
What is the last month it snows in Cromwell?
What is the average length of the day in May in Cromwell?
What time are sunrise and sunset in May in Cromwell?
How many hours of sunshine does Cromwell have in May?
What is the UV index reading in May in Cromwell?
Average temperature in May
Cromwell, IA
- Average high temperature in May: 69.3°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in May: 52.7°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in May
Cromwell, IA
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Cromwell, IA
- Average wind speed in May: 8.9mph
The windiest months (with the highest average wind speed) are January and February (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in May
Cromwell, IA
- Average humidity in May: 79%
The months with the highest relative humidity are January and June (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Cromwell, IA
- Average rainfall in May: 3.62"
The wettest month (with the highest rainfall) is June (4.17").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in May
Cromwell, IA
- Average rainfall days in May: 17.4 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (3.7 days).
Average snowfall in May
Cromwell, IA
- Average snowfall in May: 0.31"
The month with the highest snowfall is January (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Cromwell, IA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Cromwell, IA
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in May
Cromwell, IA
- Average sunshine days in May: 10.7 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in May
Cromwell, IA
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Cromwell, IA
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in May
Cromwell, IA
- 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).
Cromwell, Iowa, USA
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