May weather forecastChester, IA
May
Weather in May
The last month of the spring, May, is a refreshing month in Chester, Iowa, with an average temperature fluctuating between 48.7°F (9.3°C) and 64.9°F (18.3°C).Temperature
May indicates a change in the average high-temperature, moving up from a fresh 52.9°F (11.6°C) in April to an enjoyable 64.9°F (18.3°C). During the month of May, an average low-temperature of 48.7°F (9.3°C) is recorded.Humidity
The average relative humidity in May in Chester is 79%.Rainfall
In Chester, Iowa, in May, it is raining for 17.5 days, with typically 3.27" (83mm) of accumulated precipitation. Throughout the year, in Chester, there are 136.6 rainfall days, and 25.79" (655mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Chester. During 0.7 snowfall days, in May, Chester aggregates 0.67" (17mm) of snow. Throughout the year, in Chester, there are 60.5 snowfall days, and 23.35" (593mm) of snow is accumulated.Daylight
The average length of the day in May in Chester, Iowa, is 14h and 43min.On the first day of May in Chester, sunrise is at 6:00 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:43 pm CDT.
Sunshine
In May, the average sunshine in Chester is 8.3h.UV index
In Chester, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: In May, the maximum UV index of 5 transforms into these recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Enhance your sun protection with tightly woven, yet airy clothing. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Chester, IA
- Average high temperature in May: 64.9°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (20.8°F).
- Average low temperature in May: 48.7°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (8.6°F).
Average pressure in May
Chester, IA
- Average pressure in May: 29.94"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
Chester, IA
- Average wind speed in May: 9.3mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in May
Chester, IA
- Average humidity in May: 79%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (74%).
Average rainfall in May
Chester, IA
- Average rainfall in May: 3.27"
The wettest month (with the highest rainfall) is June (4.53").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in May
Chester, IA
- Average rainfall days in May: 17.5 days
The month with the highest number of rainy days is June (19.1 days).
The month with the least rainy days is February (3.6 days).
Average snowfall in May
Chester, IA
- Average snowfall in May: 0.67"
The month with the highest snowfall is February (5.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Chester, IA
- Average snowfall days in May: 0.7 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Chester, IA
- Average daylight in May: 14h and 42min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in May: 8h and 18min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in May
Chester, IA
- Average sunshine days in May: 10.9 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (8.8 days).
Average UV index in May
Chester, IA
- 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
Chester, IA
- Average cloud cover in May: 45
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in May
Chester, IA
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, July and December (5mi).
