May weather forecast
Bettendorf, IA

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Modern homes in an estate in Bettendorf, Iowa, set in a luxurious and serene environment overlooking the calm sea out front
Modern homes in an estate in Bettendorf, Iowa, set in a luxurious and serene environment overlooking the calm sea out front

Weather in May

As May settles in, we can see a clear shift from the cool weather to milder, more enjoyable temperatures around 70.3°F (21.3°C). Rainfall is at its annual peak this month, with an average accumulation of approximately 4.49 in, leading to lush green expanses and blooming flower beds. The sunshine hours and daylight periods continue to increase, bringing more warmth and brightness to the city. The diminishing snowfall rates seen over previous months continue, with the month seeing no snowfall whatsoever. The blooming city, complemented by the pleasant weather and increasing sunshine, makes May one of the most enjoyable months in Bettendorf.

Temperature

The arrival of May in Bettendorf brings an increase in high-temperatures, moving from a refreshing 59°F (15°C) in April to a pleasant 70.3°F (21.3°C). Bettendorf's average low-temperature in the month of May is recorded at a cool 53.2°F (11.8°C).

Humidity

In Bettendorf, the average relative humidity in May is 77%.

Rainfall

May is the month with the most rainfall. Rain falls for 17.5 days and accumulates 4.49" (114mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In May, the average length of the day is 14h and 32min.
On the first day of the month, sunrise is at 5:57 am and sunset at 8:00 pm. On the last day of May, sunrise is at 5:30 am and sunset at 8:29 pm CDT.

Sunshine

In May, the average sunshine is 8.6h.

UV index

The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 5 in May translates into the following instructions:
Exercise prevention - Precautions against solar damage are endorsed. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Bettendorf in May?

In May, in Bettendorf, the average high-temperature is 70.3°F (21.3°C), and the average low-temperature is 53.2°F (11.8°C).

What is the average humidity in May?

In May, the average relative humidity is 77%.

What is the rainiest month in Bettendorf?

The month with the most rainfall is May, when the rain falls for 17.5 days and typically aggregates up to 4.49" (114mm) of precipitation.

How much does it rain in May?

In May, the rain falls for 17.5 days. Throughout May, 4.49" (114mm) of precipitation is accumulated.

When it does not snow in Bettendorf?

May through September are months without snowfall.

Does it snow in May?

In May, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does Bettendorf have in May?

The average day length in May is 14h and 32min.

When are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 5:57 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:29 pm CDT.

How many hours of sunshine does Bettendorf have in May?

In May, the average sunshine duration is 8.6h.

What is the UV index reading in May?

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Bettendorf, IA

Average temperature in May - Bettendorf, IA
  • Average high temperature in May: 70.3°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in May: 53.2°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).

Average pressure in May
Bettendorf, IA

Average pressure in May - Bettendorf, IA
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in May
Bettendorf, IA

Average wind speed in May - Bettendorf, IA
  • Average wind speed in May: 9mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).

Average humidity in May
Bettendorf, IA

Average humidity in May - Bettendorf, IA
  • Average humidity in May: 77%

The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (71%).

Average rainfall in May
Bettendorf, IA

Average rainfall in May - Bettendorf, IA
  • Average rainfall in May: 4.49"

The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is February (1.1").

Average rainfall days in May
Bettendorf, IA

Average rainfall days in May - Bettendorf, IA
  • Average rainfall days in May: 17.5 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (4.3 days).

Average snowfall in May
Bettendorf, IA

Average snowfall in May - Bettendorf, IA
  • Average snowfall in May: 0"

The month with the highest snowfall is January (3.98").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
Bettendorf, IA

Average snowfall days in May - Bettendorf, IA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (10.9 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
Bettendorf, IA

Average daylight in May / Average sunshine in May - Bettendorf, 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 12min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in May
Bettendorf, IA

Average sunshine days in May - Bettendorf, IA
  • Average sunshine days in May: 11.4 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (11.4 days).

Average UV index in May
Bettendorf, IA

Average UV index in May - Bettendorf, IA
  • Average UV index in May: 5

The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in May
Bettendorf, IA

Average cloud cover in May - Bettendorf, IA
  • Average cloud cover in May: 43

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in May
Bettendorf, IA

Average visibility in May - Bettendorf, 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).

Bettendorf, Iowa, USA

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