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 brings a rise in the average high-temperature, transitioning from April's fresh 54.9°F (12.7°C) to an enjoyable 66.7°F (19.3°C). The low-temperature average for Colwell during May stands at a fresh 50.5°F (10.3°C).Humidity
In May, the average relative humidity is 76%.Rainfall
In Colwell, during May, the rain falls for 19.2 days and regularly aggregates up to 3.82" (97mm) of precipitation. Throughout the year, there are 136.1 rainfall days, and 27.32" (694mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Colwell aggregates 0.47" (12mm) of snow. In Colwell, during the entire year, snow falls for 59.5 days and aggregates up to 25.04" (636mm) of snow.Daylight
The average length of the day in May in Colwell, Iowa, is 14h and 41min.On the first day of the month, sunrise is at 6:02 am and sunset at 8:12 pm. On the last day of May, sunrise is at 5:33 am and sunset at 8:42 pm CDT.
Sunshine
The average sunshine in May is 8.3h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In May, the average maximum UV index of 5 translates into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
What is the average length of the day in May in Colwell?
What time are sunrise and sunset in May?
How many hours of sunshine does Colwell have in May?
How high is the UV index in May?
Average temperature in May
Colwell, IA
- Average high temperature in May: 66.7°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (22.6°F).
- Average low temperature in May: 50.5°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in May
Colwell, IA
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in May
Colwell, IA
- Average wind speed in May: 9.3mph
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 (7.1mph).
Average humidity in May
Colwell, IA
- Average humidity in May: 76%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (72%).
Average rainfall in May
Colwell, IA
- Average rainfall in May: 3.82"
The wettest month (with the highest rainfall) is June (4.17").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in May
Colwell, IA
- Average rainfall days in May: 19.2 days
The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in May
Colwell, IA
- Average snowfall in May: 0.47"
The month with the highest snowfall is February (6.5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Colwell, IA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Colwell, IA
- Average daylight in May: 14h and 4min
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 2min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in May
Colwell, IA
- Average sunshine days in May: 9.6 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in May
Colwell, IA
- Average UV index in May: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in May
Colwell, IA
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in May
Colwell, IA
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, September, October and November (6mi).
The months with the lowest visibility are January, February, July, August and December (5mi).
Colwell, Iowa, USA
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