May weather forecast
Onawa Junction, IA

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Weather in May

The last month of the spring, May, is an agreeable month in Onawa Junction, Iowa, with temperature in the range of an average low of 52.2°F (11.2°C) and an average high of 68.5°F (20.3°C).

Temperature

May brings an increase in the average high-temperature, progressing from a refreshing 56.8°F (13.8°C) in April to a pleasant 68.5°F (20.3°C). An average low-temperature of 52.2°F (11.2°C) is noted during the nights in May in Onawa Junction.

Humidity

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

Rainfall

In Onawa Junction, in May, it is raining for 15.3 days, with typically 2.68" (68mm) of accumulated precipitation. Throughout the year, there are 117 rainfall days, and 19.84" (504mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Onawa Junction aggregates 0.04" (1mm) of snow. Throughout the year, there are 36.4 snowfall days, and 10.67" (271mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 39min.
On the first day of the month, sunrise is at 6:15 am and sunset at 8:23 pm. On the last day of May, in Onawa Junction, sunrise is at 5:46 am and sunset at 8:53 pm CDT.

Sunshine

The average sunshine in May in Onawa Junction, Iowa, is 8.7h.

UV index

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: During May, 5 as the daily maximum UV index converts into the following advice:
Take necessary precautions - Suggestions to elude sunburn are provided. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
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Frequently asked questions

What is the usual temperature for Onawa Junction in May?

Onawa Junction in May has an average high-temperature of 68.5°F (20.3°C) and an average low-temperature of 52.2°F (11.2°C).

What is the average humidity in May in Onawa Junction?

In May, the average relative humidity in Onawa Junction, Iowa, is 69%.

How much does it rain in Onawa Junction in May?

In Onawa Junction, Iowa, in May, during 15.3 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

What is the last month it snows in Onawa Junction?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Onawa Junction aggregates 0.04" (1mm) of snow.

How many hours of daylight does Onawa Junction have in May?

The average day length in May is 14h and 39min.

When is the sunrise / sunset in May in Onawa Junction?

In May, on the first day of the month, sunrise is at 6:15 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:53 pm CDT.

How long on average sun shines in May in Onawa Junction?

In May, the average sunshine duration in Onawa Junction is 8.7h.

What is the UV index intensity in May in Onawa Junction?

In May, the average daily maximum UV index in Onawa Junction is 5. A UV Index value of 3 to 5 symbolizes 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
Onawa Junction, IA

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

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (24.4°F).

  • Average low temperature in May: 52.2°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (12°F).

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Average pressure in May
Onawa Junction, IA

Average pressure in May - Onawa Junction, 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 (29.87"Hg).

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Average wind speed in May
Onawa Junction, IA

Average wind speed in May - Onawa Junction, IA
  • Average wind speed in May: 9.7mph

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

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Average humidity in May
Onawa Junction, IA

Average humidity in May - Onawa Junction, 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%).

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Average rainfall in May
Onawa Junction, IA

Average rainfall in May - Onawa Junction, IA
  • Average rainfall in May: 2.68"

The wettest month (with the highest rainfall) is June (3.15").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days in May
Onawa Junction, IA

Average rainfall days in May - Onawa Junction, IA
  • Average rainfall days in May: 15.3 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (2.6 days).

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Average snowfall in May
Onawa Junction, IA

Average snowfall in May - Onawa Junction, IA
  • Average snowfall in May: 0.04"

The month with the highest snowfall is February (3.19").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Onawa Junction, IA

Average snowfall days in May - Onawa Junction, IA
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Onawa Junction, IA

Average daylight in May / Average sunshine in May - Onawa Junction, 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 30min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in May
Onawa Junction, IA

Average sunshine days in May - Onawa Junction, IA
  • Average sunshine days in May: 13.4 days

The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (11.1 days).

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Average UV index in May
Onawa Junction, IA

Average UV index in May - Onawa Junction, 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 January (UV index 1).

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Average cloud cover in May
Onawa Junction, IA

Average cloud cover in May - Onawa Junction, IA
  • Average cloud cover in May: 41

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in May
Onawa Junction, IA

Average visibility in May - Onawa Junction, 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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Onawa Junction, Iowa, USA

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