May weather forecast
Clinton, IA

Share

Weather in May

May signals the advent of early summer in Clinton, Iowa, with an escalation in temperatures apparent. The weather turns significantly warmer with highs climbing to 69.4°F (20.8°C). This month records the highest average rainfall, turning the cityscape verdant and lush. Activities shift outdoors as residents revel in the sun-soaked days and pleasantly cool, dewy evenings of May.

Temperature

Clinton's May weather brings a rise in high-temperatures, moving from a refreshing 58.1°F (14.5°C) in April to a pleasant 69.4°F (20.8°C). The average temperature during May nights in Clinton is registered at a cool 52.7°F (11.5°C).

Humidity

In May, the average relative humidity is 78%.

Rainfall

The month with the most rainfall is May, when the rain falls for 16.9 days and typically aggregates up to 3.19" (81mm) of precipitation.

Snowfall

In Clinton, snow does not fall in May through September.

Daylight

In May, the average length of the day is 14h and 34min.
On the first day of the month, sunrise is at 5:55 am and sunset at 7:59 pm. On the last day of May, in Clinton, sunrise is at 5:28 am and sunset at 8:28 pm CDT.

Sunshine

The average sunshine in May is 8.7h.

UV index

In Clinton, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum high UV index of 5 in May translates into the following recommendations:
Act with care - The need to guard against sun damage is communicated. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.

Frequently asked questions

What is the average May temperature?

An average high-temperature, in May, in Clinton, is 69.4°F (20.8°C) and the average low-temperature is 52.7°F (11.5°C).

What is the average humidity in May in Clinton?

The average relative humidity in May is 78%.

What is the rainiest month?

The month with the most rainfall is May, when the rain falls for 16.9 days and typically aggregates up to 3.19" (81mm) of precipitation.

How many days does it rain in May?

In May, the rain falls for 16.9 days. Throughout May, 3.19" (81mm) of precipitation is accumulated.

When it does not snow?

May through September are months without snowfall.

Does it snow in May?

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

How many hours of daylight does Clinton have in May?

In Clinton, the average day length in May is 14h and 34min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 5:55 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:28 am and sunset at 8:28 pm CDT.

How many hours of sunshine does Clinton have in May?

In Clinton, Iowa, the average sunshine duration in May is 8.7h.

What is the UV index intensity in May?

The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health 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
Clinton, IA

Average temperature in May - Clinton, IA
  • Average high temperature in May: 69.4°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (26.8°F).

  • Average low temperature in May: 52.7°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).

Average pressure in May
Clinton, IA

Average pressure in May - Clinton, IA
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in May
Clinton, IA

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

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in May
Clinton, IA

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

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (73%).

Average rainfall in May
Clinton, IA

Average rainfall in May - Clinton, IA
  • Average rainfall in May: 3.19"

The wettest month (with the highest rainfall) is May (3.19").
The driest months (with the least rainfall) are January and February (0.79").

Average rainfall days in May
Clinton, IA

Average rainfall days in May - Clinton, IA
  • Average rainfall days in May: 16.9 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (4.3 days).

Average snowfall in May
Clinton, IA

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

The month with the highest snowfall is January (2.8").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
Clinton, IA

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

The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Clinton, 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 4min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in May
Clinton, IA

Average sunshine days in May - Clinton, IA
  • Average sunshine days in May: 11.8 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (11.8 days).

Average UV index in May
Clinton, IA

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

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

Average cloud cover in May
Clinton, IA

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

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 30).

Average visibility in May
Clinton, IA

Average visibility in May - Clinton, IA
  • Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

Clinton, Iowa, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location