May weather forecast
Wallingford, IA

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Weather in May

The last month of the spring, May, is a pleasant month in Wallingford, Iowa, with an average temperature varying between 51.4°F (10.8°C) and 68°F (20°C).

Temperature

Wallingford experiences a temperature shift with the start of May, with average high-temperatures moving from a fresh 55°F (12.8°C) in April to an agreeable 68°F (20°C). Wallingford, in May, observes a steady average low-temperature of 51.4°F (10.8°C).

Humidity

The average relative humidity in May is 69%.

Rainfall

In Wallingford, during May, the rain falls for 16.2 days and regularly aggregates up to 3.27" (83mm) of precipitation. In Wallingford, during the entire year, the rain falls for 123.7 days and collects up to 23.66" (601mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Wallingford. May is the last month it regularly snows in Wallingford. During 0.3 snowfall days, in May, Wallingford aggregates 0.24" (6mm) of snow. Throughout the year, in Wallingford, there are 48.8 snowfall days, and 19.76" (502mm) of snow is accumulated.

Daylight

In May, the average length of the day in Wallingford is 14h and 43min.
On the first day of May in Wallingford, sunrise is at 6:10 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:52 pm CDT.

Sunshine

The average sunshine in May is 8.6h.

UV index

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index, 5 in May, converts into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Wallingford in May?

Wallingford in May has an average high-temperature of 68°F (20°C) and an average low-temperature of 51.4°F (10.8°C).

What is the average humidity in May in Wallingford?

In May, the average relative humidity is 69%.

How much does it rain in Wallingford in May?

In Wallingford, Iowa, during May, the rain falls for 16.2 days and regularly aggregates up to 3.27" (83mm) of precipitation.

What is the last month it snows in Wallingford?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Wallingford aggregates 0.24" (6mm) of snow.

How many hours of daylight does Wallingford have in May?

In May, the average day length in Wallingford, Iowa, is 14h and 43min.

What time are sunrise and sunset in May in Wallingford?

On the first day of May in Wallingford, sunrise is at 6:10 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:52 pm CDT.

How many hours of sunshine does Wallingford have in May?

In May, the average sunshine duration in Wallingford, Iowa, is 8.6h.

How high is the UV index in May in Wallingford?

The average daily maximum UV index in May in Wallingford, Iowa, is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Wallingford, IA

Average temperature in May - Wallingford, IA
  • Average high temperature in May: 68°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (22.5°F).

  • Average low temperature in May: 51.4°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).

Average pressure in May
Wallingford, IA

Average pressure in May - Wallingford, IA
  • Average pressure in May: 29.93"Hg

The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in May
Wallingford, IA

Average wind speed in May - Wallingford, IA
  • Average wind speed in May: 9.6mph

The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).

Average humidity in May
Wallingford, IA

Average humidity in May - Wallingford, IA
  • Average humidity in May: 69%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (68%).

Average rainfall in May
Wallingford, IA

Average rainfall in May - Wallingford, IA
  • Average rainfall in May: 3.27"

The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.87").

Average rainfall days in May
Wallingford, IA

Average rainfall days in May - Wallingford, IA
  • Average rainfall days in May: 16.2 days

The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is February (2.3 days).

Average snowfall in May
Wallingford, IA

Average snowfall in May - Wallingford, IA
  • Average snowfall in May: 0.24"

The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Wallingford, IA

Average snowfall days in May - Wallingford, IA
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Wallingford, IA

Average daylight in May / Average sunshine in May - Wallingford, IA
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in May
Wallingford, IA

Average sunshine days in May - Wallingford, IA
  • Average sunshine days in May: 13 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is June (10.1 days).

Average UV index in May
Wallingford, IA

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

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).

Average cloud cover in May
Wallingford, IA

Average cloud cover in May - Wallingford, IA
  • Average cloud cover in May: 42

The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are July and September (Cloud cover 31).

Average visibility in May
Wallingford, IA

Average visibility in May - Wallingford, IA
  • Average visibility in May: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Wallingford, Iowa, USA

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