May weather forecast
Newton, IA

Weather in May

May, the last month of the spring, in Newton, is a pleasant month, with average temperature fluctuating between 69.3°F (20.7°C) and 52.5°F (11.4°C).

Temperature

In Newton, the average high-temperature increases, from a mild 58.8°F (14.9°C) in April, to a pleasant 69.3°F (20.7°C). In Newton, the average low-temperature is 52.5°F (11.4°C).

Humidity

In May, the average relative humidity is 78%.

Rainfall

The month with the most rainfall is May when the rain falls for 14.7 days and typically aggregates up to 2.13" (54mm) 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, Newton aggregates 0.04" (1mm) of snow. Throughout the year, in Newton, there are 28.8 snowfall days, and 5.28" (134mm) of snow is accumulated.

Daylight

The average length of the day in May is 14.6h.

Sunshine

In Newton, Iowa, the average sunshine is 8.6h.

UV index

The average daily maximum UV index in Newton is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 5 in May transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in May in Newton?

In May, the average relative humidity is 78%.

What is the rainiest month in Newton?

The month with the most rainfall is May when the rain falls for 14.7 days and typically aggregates up to 2.13" (54mm) of precipitation.

How many days does it rain in May in Newton?

In Newton, in May, during 14.7 rainfall days, 2.13" (54mm) of precipitation is typically accumulated.

What is the last month it snows in Newton?

May is the last month it regularly snows in Newton, Iowa. During 0.2 snowfall days, in May, Newton aggregates 0.04" (1mm) of snow.

How many hours of daylight does Newton have in May?

In Newton, Iowa, the average length of the day in May is 14.6h.

How long on average sun shines in May in Newton?

In May, the average sunshine in Newton, Iowa, is 8.6h.

How high is the UV index in May in Newton?

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in May
Newton, IA

Average temperature in May - Newton, IA
  • Average high temperature in May: 20.7°C

The warmest month (with the highest average high temperature) is July (27.5°C).
The month with the lowest average high temperature is January (-2.7°C).

  • Average low temperature in May: 11.4°C

The month with the highest average low temperature is July (18.2°C).
The coldest month (with the lowest average low temperature) is January (-9.8°C).

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Average pressure in May
Newton, IA

Average pressure in May - Newton, IA
  • Average pressure in May: 1013.7mbar

The month with the highest atmospheric pressure is January (1021.1mbar).
The month with the lowest atmospheric pressure is June (1012.2mbar).

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Average wind speed in May
Newton, IA

Average wind speed in May - Newton, IA
  • Average wind speed in May: 14.5km/h

The windiest month (with the highest average wind speed) is April (17km/h).
The calmest month (with the lowest average wind speed) is August (11.2km/h).

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Average humidity in May
Newton, IA

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

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in May
Newton, IA

Average rainfall in May - Newton, IA
  • Average rainfall in May: 54mm

The wettest month (with the highest rainfall) is May (54mm).
The driest months (with the least rainfall) are January, February and December (10mm).

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Average rainfall days in May
Newton, IA

Average rainfall days in May - Newton, IA
  • Average rainfall days in May: 14.7 days

The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is February (3.4 days).

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Average snowfall in May
Newton, IA

Average snowfall in May - Newton, IA
  • Average snowfall in May: 1mm

The month with the highest snowfall is January (44mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in May
Newton, IA

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

The month with the highest number of snowfall days is January (8.4 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
Newton, IA

Average daylight in May / Average sunshine in May - Newton, IA
  • Average daylight in May: 14.6h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in May: 8.6h

The month with the most sunshine is July (Average sunshine: 10.3h).
The month with the least sunshine is January (Average sunshine: 4.2h).

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Average sunshine days in May
Newton, IA

Average sunshine days in May - Newton, IA
  • Average sunshine days in May: 13.6 days

The month with the most sunshine days is December (22.9 days).
The month with the least sunshine days is June (12.2 days).

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Average UV index in May
Newton, IA

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

The months with the highest UV index are June and 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
Newton, IA

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

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).

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Average visibility in May
Newton, IA

Average visibility in May - Newton, IA
  • Average visibility in May: 9km

The month with the highest visibility is November (10km).
The months with the lowest visibility are July and August (8km).

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