May weather forecastColumbia, IA
May
Weather in May
The last month of the spring, May, is a pleasant month in Columbia, Iowa, with temperature in the range of an average low of 52.9°F (11.6°C) and an average high of 69.4°F (20.8°C).Temperature
As Columbia, Iowa, transitions into May, the average high-temperature is observed to rise from a moderate 59.9°F (15.5°C) in April to an agreeable 69.4°F (20.8°C). Nightly temperatures drop to an average low of 52.9°F (11.6°C) in May.Humidity
The average relative humidity in May in Columbia is 79%.Rainfall
May is the month with the most rainfall. Rain falls for 15.3 days and accumulates 2.24" (57mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Columbia. May is the last month it regularly snows. During 0.2 snowfall days, in May, Columbia aggregates 0.2" (5mm) of snow. Throughout the year, there are 30.4 snowfall days, and 6.5" (165mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 31min.On the first day of the month, sunrise is at 6:09 am and sunset at 8:10 pm. On the last day of May, in Columbia, sunrise is at 5:42 am and sunset at 8:38 pm CDT.
Sunshine
The average sunshine in May is 8.7h.UV index
In Columbia, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: During May, 5 as the daily maximum UV index converts into the following advice:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Columbia, IA
- Average high temperature in May: 69.4°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in May: 52.9°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in May
Columbia, 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 (29.89"Hg).
Average wind speed in May
Columbia, IA
- Average wind speed in May: 8.8mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in May
Columbia, IA
- Average humidity in May: 79%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Columbia, IA
- 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 February and December (0.47").
Average rainfall days in May
Columbia, IA
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in May
Columbia, IA
- Average snowfall in May: 0.2"
The month with the highest snowfall is January (2.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Columbia, 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
Columbia, IA
- Average daylight in May: 14h and 30min
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 42min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in May
Columbia, IA
- Average sunshine days in May: 12 days
The months with the most sunshine days are November and December (20.5 days).
The month with the least sunshine days is June (11.6 days).
Average UV index in May
Columbia, 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
Columbia, IA
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July, August and September (Cloud cover 29).
Average visibility in May
Columbia, 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).
