May weather forecast
Sunbury, IA

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Weather in May

The last month of the spring, May, is a pleasant month in Sunbury, Iowa, with an average temperature varying between 53.2°F (11.8°C) and 69.8°F (21°C).

Temperature

The beginning of May marks a shift in the average high-temperature, moving from April's refreshing 58.6°F (14.8°C) to an agreeable 69.8°F (21°C). In May, the recorded average low-temperature in Sunbury is a fresh 53.2°F (11.8°C).

Humidity

The average relative humidity in May is 78%.

Rainfall

The month with the most rainfall is May, when the rain falls for 17.5 days and typically aggregates up to 4.57" (116mm) of precipitation.

Snowfall

May through September are months without snowfall in Sunbury.

Daylight

In Sunbury, the average length of the day in May is 14h and 33min.
On the first day of the month, sunrise is at 5:59 am and sunset at 8:02 pm. On the last day of May, sunrise is at 5:31 am and sunset at 8:31 pm CDT.

Sunshine

The average sunshine in May in Sunbury is 8.8h.

UV index

In May, the average daily maximum UV index in Sunbury is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 5 during May translates into the following directions:
Exercise prevention - Protecting skin and eyes from harm is required. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
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Frequently asked questions

What is the usual temperature for Sunbury in May?

In May, in Sunbury, the average high-temperature is 69.8°F (21°C), and the average low-temperature is 53.2°F (11.8°C).

What is the average humidity in May in Sunbury?

In May, the average relative humidity in Sunbury, Iowa, is 78%.

What is the rainiest month in Sunbury?

May is the month with the most rainfall in Sunbury, Iowa. Rain falls for 17.5 days and accumulates 4.57" (116mm) of precipitation.

How many days does it rain in May in Sunbury?

In Sunbury, in May, during 17.5 rainfall days, 4.57" (116mm) of precipitation is typically accumulated.

When it does not snow in Sunbury?

May through September are months without snowfall in Sunbury.

Does it snow in Sunbury in May?

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

What is the average length of the day in May in Sunbury?

In May, the average day length is 14h and 33min.

What time are sunrise and sunset in May in Sunbury?

In May, on the first day of the month, sunrise is at 5:59 am and sunset at 8:02 pm. On the last day of the month, in Sunbury, sunrise is at 5:31 am and sunset at 8:31 pm CDT.

How long on average sun shines in May in Sunbury?

The average sunshine duration in May is 8.8h.

How high is the UV index in May in Sunbury?

In Sunbury, Iowa, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe 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
Sunbury, IA

Average temperature in May - Sunbury, IA
  • Average high temperature in May: 69.8°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (27.7°F).

  • Average low temperature in May: 53.2°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

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Average pressure in May
Sunbury, IA

Average pressure in May - Sunbury, 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).

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Average wind speed in May
Sunbury, IA

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

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

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Average humidity in May
Sunbury, IA

Average humidity in May - Sunbury, IA
  • Average humidity in May: 78%

The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in May
Sunbury, IA

Average rainfall in May - Sunbury, IA
  • Average rainfall in May: 4.57"

The wettest month (with the highest rainfall) is May (4.57").
The driest month (with the least rainfall) is February (1.1").

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Average rainfall days in May
Sunbury, IA

Average rainfall days in May - Sunbury, 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).

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Average snowfall in May
Sunbury, IA

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

The month with the highest snowfall is January (4.09").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Sunbury, IA

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

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

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

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

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • 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 0min).

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Average sunshine days in May
Sunbury, IA

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

The month with the most sunshine days is December (18.4 days).
The months with the least sunshine days are May and June (11.4 days).

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Average UV index in May
Sunbury, IA

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

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

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Average cloud cover in May
Sunbury, IA

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

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in May
Sunbury, IA

Average visibility in May - Sunbury, 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).

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Sunbury, Iowa, USA

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