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
The start of May brings a shift in the average high-temperature, increasing from April's enjoyable 61.7°F (16.5°C) to a pleasant 71.4°F (21.9°C). In May, the nighttime temperature lowers to an average of 54.1°F (12.3°C).Humidity
The average relative humidity in May is 73%.Rainfall
In Bartlett, Iowa, during May, the rain falls for 16.6 days and regularly aggregates up to 4.29" (109mm) of precipitation. In Bartlett, during the entire year, the rain falls for 122.8 days and collects up to 26.69" (678mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Bartlett aggregates 0.12" (3mm) of snow. Throughout the year, there are 28.2 snowfall days, and 10.91" (277mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 29min.On the first day of the month, sunrise is at 6:20 am and sunset at 8:20 pm. On the last day of May, sunrise is at 5:53 am and sunset at 8:48 pm CDT.
Sunshine
The average sunshine in May is 8.6h.UV index
In Bartlett, 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 ordinary individuals.Note: The daily maximum UV index of 5 in May interprets into the following advice:
Undertake protective steps - Recommendations to avoid sunburn are issued. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
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?
What time are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index intensity in May in Bartlett?
Average temperature in May
Bartlett, IA
- Average high temperature in May: 71.4°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in May: 54.1°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in May
Bartlett, IA
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in May
Bartlett, IA
- Average wind speed in May: 8.9mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in May
Bartlett, IA
- Average humidity in May: 73%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is October (66%).
Average rainfall in May
Bartlett, IA
- Average rainfall in May: 4.29"
The wettest month (with the highest rainfall) is June (4.33").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days in May
Bartlett, IA
- Average rainfall days in May: 16.6 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is February (3.2 days).
Average snowfall in May
Bartlett, IA
- Average snowfall in May: 0.12"
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
Bartlett, IA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Bartlett, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in May
Bartlett, IA
- Average sunshine days in May: 13.3 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in May
Bartlett, IA
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in May
Bartlett, IA
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in May
Bartlett, 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).
Bartlett, Iowa, USA
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