May weather forecast
Red Oak, IA

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Weather in May

The last month of the spring, May, is an agreeable month in Red Oak, Iowa, with an average temperature ranging between min 54°F (12.2°C) and max 70.7°F (21.5°C).

Temperature

With the beginning of May, Red Oak's average high-temperature sees an increase, transitioning from a comfortable 61.3°F (16.3°C) in April to an agreeable 70.7°F (21.5°C). An average low-temperature of 54°F (12.2°C) is expected in Red Oak during May.

Humidity

The average relative humidity in May in Red Oak is 75%.

Rainfall

In May, the rain falls for 16.8 days. Throughout May, 3.5" (89mm) of precipitation is accumulated. In Red Oak, during the entire year, the rain falls for 117.2 days and collects up to 21.77" (553mm) of precipitation.

Snowfall

In Red Oak, snow does not fall in May through September.

Daylight

In May, the average length of the day is 14h and 30min.
On the first day of May in Red Oak, Iowa, sunrise is at 6:17 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:46 pm CDT.

Sunshine

The average sunshine in May in Red Oak is 8.6h.

UV index

The average daily maximum UV index in May in Red Oak is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 5 during May translates into the following guidance:
Undertake protective steps - Recommendations to avoid sunburn are issued. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

What are May temperatures in Red Oak?

In May, in Red Oak, the average high-temperature is 70.7°F (21.5°C), and the average low-temperature is 54°F (12.2°C).

What is the average humidity in May in Red Oak?

In Red Oak, the average relative humidity in May is 75%.

How much does it rain in Red Oak in May?

In May, in Red Oak, the rain falls for 16.8 days. Throughout May, 3.5" (89mm) of precipitation is accumulated.

When it does not snow in Red Oak?

In Red Oak, snow does not fall in May through September.

Does it snow in Red Oak in May?

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

What is the average length of the day in May in Red Oak?

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

When is the sunrise / sunset in May in Red Oak?

On the first day of May in Red Oak, sunrise is at 6:17 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:46 pm CDT.

How many hours of sunshine does Red Oak have in May?

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

What is the UV index reading in May in Red Oak?

In Red Oak, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to 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
Red Oak, IA

Average temperature in May - Red Oak, IA
  • Average high temperature in May: 70.7°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (30°F).

  • Average low temperature in May: 54°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).

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Average pressure in May
Red Oak, IA

Average pressure in May - Red Oak, IA
  • Average pressure in May: 29.92"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in May
Red Oak, IA

Average wind speed in May - Red Oak, IA
  • Average wind speed in May: 8.8mph

The windiest months (with the highest average wind speed) are March and April (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).

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Average humidity in May
Red Oak, IA

Average humidity in May - Red Oak, IA
  • Average humidity in May: 75%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is October (68%).

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Average rainfall in May
Red Oak, IA

Average rainfall in May - Red Oak, IA
  • Average rainfall in May: 3.5"

The wettest month (with the highest rainfall) is June (4.06").
The driest months (with the least rainfall) are January and February (0.63").

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Average rainfall days in May
Red Oak, IA

Average rainfall days in May - Red Oak, IA
  • Average rainfall days in May: 16.8 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (2.9 days).

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Average snowfall in May
Red Oak, IA

Average snowfall in May - Red Oak, IA
  • Average snowfall in May: 0"

The month with the highest snowfall is January (2.68").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Red Oak, IA

Average snowfall days in May - Red Oak, IA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (7.9 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
Red Oak, IA

Average daylight in May / Average sunshine in May - Red Oak, 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 18min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

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Average sunshine days in May
Red Oak, IA

Average sunshine days in May - Red Oak, IA
  • Average sunshine days in May: 12.3 days

The month with the most sunshine days is December (23.1 days).
The month with the least sunshine days is May (12.3 days).

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Average UV index in May
Red Oak, IA

Average UV index in May - Red Oak, IA
  • Average UV index in May: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).

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Average cloud cover in May
Red Oak, IA

Average cloud cover in May - Red Oak, IA
  • Average cloud cover in May: 41

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in May
Red Oak, IA

Average visibility in May - Red Oak, 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).

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Red Oak, Iowa, USA

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