United StatesThe weather in May in Iowa
It's pleasantly warm in May in Iowa with an average temperature of 22°C. Temperatures this month range from a low of 16°C to a high of 28°C. At night, you can expect temperatures between 7°C and 16°C.
Looking for sun? May isn’t a good month to be in Iowa. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in May for Iowa, United States. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 37°C in 2018, Iowa reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 8°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of -1°C to a highest value of 23°C.
Rainfall amount
In May, there is an average of 163 mm of precipitation, spread over 17 days. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in May for Iowa
Click on any day in May to get detailed info about the usual weather on that day in Iowa. Check out the historical temperatures and precipitation over the past 10 years on this day.
May weather comparison
| Iowa | New York | |
|---|---|---|
| Average temperature | 22°C | 22°C |
| Max. temperature | 28°C | 28°C |
| Min. temperature | 7°C | -5°C |
| Total precipitation | 163 mm | 105 mm |
| Rainy days | 17 days | 14 days |
Start of May
The month of May starts in Iowa with mild temps, averaging around 20°C during the day and nights around 10°C.
Mid May
By mid-May, daytime temps rise to around 22°C, with nights around 11°C. There’s a high chance of precipitation during this time.
End of May
By the end of May, the average daytime temperature in Iowa is around 26°C, while nighttime temps are about 15°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
Find affordable vacations to Iowa
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Check out the climate of Iowa for all months and discover the best travel time
The climate in Iowa is based on weather data from . Other places, like New York City, Miami or Los Angeles, might have different weather. You can check out all destinations in Iowa to get the full picture of the climate.
Temperature charts
These charts show the average temperatures in May in Iowa, United States. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in May in Iowa
Temperature in May in Iowa over the years
Precipitation charts
These charts show the average amount of precipitation in May in Iowa, United States. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in May in Iowa
Total precipitation in May in Iowa over the years
Daily UV index in May in Iowa
This chart shows the average daily UV index in May in Iowa, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in May in Iowa
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Average weather in Iowa by month
Click on a month below to see detailed weather info for Iowa. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.