May weather forecast
Mallard, IA

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Weather in May

The last month of the spring, May, is an agreeable month in Mallard, Iowa, with an average temperature varying between 52.2°F (11.2°C) and 68.5°F (20.3°C).

Temperature

With the transition into May, Mallard experiences an increase in average high-temperatures, moving up from a mild 56.3°F (13.5°C) in April to a pleasant 68.5°F (20.3°C). During the nights in May, Mallard observes an average low-temperature of 52.2°F (11.2°C).

Humidity

In May, the average relative humidity is 69%.

Rainfall

In Mallard, in May, it is raining for 16.3 days, with typically 3.15" (80mm) of accumulated precipitation. In Mallard, during the entire year, the rain falls for 127.3 days and collects up to 23.58" (599mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Mallard aggregates 0.12" (3mm) of snow. In Mallard, during the entire year, snow falls for 46.1 days and aggregates up to 19.06" (484mm) of snow.

Daylight

The average length of the day in May is 14h and 40min.
On the first day of the month, sunrise is at 6:11 am and sunset at 8:20 pm. On the last day of May, sunrise is at 5:42 am and sunset at 8:50 pm CDT.

Sunshine

The average sunshine in May is 8.7h.

UV index

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: A maximum UV index of 5 in May translates into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Mallard in May?

The high-temperature, in May, in Mallard, records 68.5°F (20.3°C), while the low-temperature is 52.2°F (11.2°C).

What is the average humidity in May in Mallard?

In Mallard, the average relative humidity in May is 69%.

How many days does it rain in May in Mallard?

In Mallard, during May, the rain falls for 16.3 days and regularly aggregates up to 3.15" (80mm) of precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.2 snowfall days, in May, Mallard aggregates 0.12" (3mm) of snow.

What is the average length of the day in May?

In May, the average day length is 14h and 40min.

When are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 6:11 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:50 pm CDT.

How long on average sun shines in May in Mallard?

In May, the average sunshine duration is 8.7h.

How high is the UV index in May in Mallard?

In Mallard, Iowa, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
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
Mallard, IA

Average temperature in May - Mallard, IA
  • Average high temperature in May: 68.5°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in May: 52.2°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).

Average pressure in May
Mallard, IA

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in May
Mallard, IA

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

The windiest months (with the highest average wind speed) are January and April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).

Average humidity in May
Mallard, IA

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

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (68%).

Average rainfall in May
Mallard, IA

Average rainfall in May - Mallard, IA
  • Average rainfall in May: 3.15"

The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is January (0.87").

Average rainfall days in May
Mallard, IA

Average rainfall days in May - Mallard, IA
  • Average rainfall days in May: 16.3 days

The month with the highest number of rainy days is June (18.3 days).
The month with the least rainy days is February (2.8 days).

Average snowfall in May
Mallard, IA

Average snowfall in May - Mallard, IA
  • Average snowfall in May: 0.12"

The month with the highest snowfall is February (4.96").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Mallard, IA

Average snowfall days in May - Mallard, IA
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Mallard, 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 6min).

  • 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 6min).

Average sunshine days in May
Mallard, IA

Average sunshine days in May - Mallard, IA
  • Average sunshine days in May: 12.7 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is June (9.6 days).

Average UV index in May
Mallard, IA

Average UV index in May - Mallard, 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 February (UV index 1).

Average cloud cover in May
Mallard, IA

Average cloud cover in May - Mallard, 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 July (Cloud cover 30).

Average visibility in May
Mallard, IA

Average visibility in May - Mallard, 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).

Mallard, Iowa, USA

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