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 temperature shift, moving from a refreshing 60.4°F (15.8°C) in April to a pleasant 70.9°F (21.6°C). In the month of May, Sperry's average low-temperature falls to a fresh 54°F (12.2°C).Humidity
In May, the average relative humidity is 78%.Rainfall
May is the month with the most rainfall. Rain falls for 16.7 days and accumulates 3.23" (82mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Sperry, the average length of the day in May is 14h and 29min.On the first day of the month, sunrise is at 6:01 am and sunset at 8:01 pm. On the last day of May, sunrise is at 5:34 am and sunset at 8:30 pm CDT.
Sunshine
In May, the average sunshine is 8.8h.UV index
The average daily maximum UV index in May in Sperry is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 5 in May transforms into this advice:
Exercise prevention - Protecting skin and eyes from harm is required. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
What is the rainiest month?
How many days does it rain in May in Sperry?
When it does not snow?
Does it snow in Sperry in May?
How many hours of daylight does Sperry have in May?
When are sunrise and sunset in May in Sperry?
How many hours of sunshine does Sperry have in May?
How high is the UV index in May?
Average temperature in May
Sperry, IA
- Average high temperature in May: 70.9°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in May: 54°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 (17.4°F).
Average pressure in May
Sperry, 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 (29.9"Hg).
Average wind speed in May
Sperry, IA
- Average wind speed in May: 8.9mph
The windiest months (with the highest average wind speed) are January, February, March and April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in May
Sperry, IA
- Average humidity in May: 78%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Sperry, IA
- Average rainfall in May: 3.23"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is December (0.87").
Average rainfall days in May
Sperry, IA
- Average rainfall days in May: 16.7 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in May
Sperry, IA
- Average snowfall in May: 0"
The month with the highest snowfall is January (3.03").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Sperry, IA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (10 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Sperry, 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 5min
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 12min).
Average sunshine days in May
Sperry, IA
- Average sunshine days in May: 10.6 days
The months with the most sunshine days are October and December (18.5 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in May
Sperry, IA
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Sperry, IA
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in May
Sperry, IA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Sperry, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location