May weather forecast
Mount Union, IA

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Weather in May

The last month of the spring, May, is an agreeable month in Mount Union, Iowa, with an average temperature fluctuating between 70.9°F (21.6°C) and 53.8°F (12.1°C).

Temperature

An escalation in the average high-temperature is seen with the onset of May, moving from a refreshing 60.8°F (16°C) in April to an agreeable 70.9°F (21.6°C). Mount Union experiences a nighttime temperature average of 53.8°F (12.1°C) during May.

Humidity

In May, the average relative humidity is 79%.

Rainfall

May is the month with the most rainfall in Mount Union. Rain falls for 18.3 days and accumulates 4.29" (109mm) of precipitation.

Snowfall

May through September are months without snowfall in Mount Union, Iowa.

Daylight

The average length of the day in May in Mount Union is 14h and 30min.
On the first day of May in Mount Union, Iowa, sunrise is at 6:02 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:31 pm CDT.

Sunshine

In May, the average sunshine 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 medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 5 in May translates into this advice:
Make use of precautions - Suggestions to resist sunburn are communicated. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What is the usual temperature for Mount Union in May?

May temperatures in Mount Union vary between a high-temperature of 70.9°F (21.6°C) and a low-temperature of 53.8°F (12.1°C).

What is the average humidity in May in Mount Union?

In May, the average relative humidity is 79%.

What is the wettest month in Mount Union?

May is the month with the most rainfall. Rain falls for 18.3 days and accumulates 4.29" (109mm) of precipitation.

How much does it rain in Mount Union in May?

In Mount Union, Iowa, during May, the rain falls for 18.3 days and regularly aggregates up to 4.29" (109mm) of precipitation.

When it does not snow in Mount Union?

May through September are months without snowfall in Mount Union.

Does it snow in Mount Union in May?

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

What is the average length of the day in May in Mount Union?

In May, the average day length is 14h and 30min.

When are sunrise and sunset in May in Mount Union?

In May, on the first day of the month, sunrise is at 6:02 am and sunset at 8:02 pm. On the last day of the month, in Mount Union, sunrise is at 5:35 am and sunset at 8:31 pm CDT.

How many hours of sunshine does Mount Union have in May?

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

What is the UV index intensity in May in Mount Union?

In May, the average daily maximum UV index in Mount Union is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
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
Mount Union, IA

Average temperature in May - Mount Union, IA
  • Average high temperature in May: 70.9°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in May: 53.8°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).

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Average pressure in May
Mount Union, IA

Average pressure in May - Mount Union, IA
  • Average pressure in May: 29.94"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in May
Mount Union, IA

Average wind speed in May - Mount Union, IA
  • Average wind speed in May: 8.9mph

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).

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Average humidity in May
Mount Union, IA

Average humidity in May - Mount Union, IA
  • Average humidity in May: 79%

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

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Average rainfall in May
Mount Union, IA

Average rainfall in May - Mount Union, IA
  • Average rainfall in May: 4.29"

The wettest month (with the highest rainfall) is May (4.29").
The driest months (with the least rainfall) are February and December (1.38").

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Average rainfall days in May
Mount Union, IA

Average rainfall days in May - Mount Union, IA
  • Average rainfall days in May: 18.3 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (4.6 days).

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Average snowfall in May
Mount Union, IA

Average snowfall in May - Mount Union, IA
  • Average snowfall in May: 0"

The month with the highest snowfall is January (4.76").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Mount Union, IA

Average snowfall days in May - Mount Union, IA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (9.6 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
Mount Union, IA

Average daylight in May / Average sunshine in May - Mount Union, 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 18min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in May
Mount Union, IA

Average sunshine days in May - Mount Union, IA
  • Average sunshine days in May: 10.6 days

The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is May (10.6 days).

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Average UV index in May
Mount Union, IA

Average UV index in May - Mount Union, IA
  • Average UV index in May: 5

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

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Average cloud cover in May
Mount Union, IA

Average cloud cover in May - Mount Union, IA
  • Average cloud cover in May: 42

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are July, August and September (Cloud cover 31).

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Average visibility in May
Mount Union, IA

Average visibility in May - Mount Union, 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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Mount Union, Iowa, USA

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