May weather forecast
Clermont, IA

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Weather in May

The last month of the spring, May, is a comfortable month in Clermont, Iowa, with an average temperature fluctuating between 65.8°F (18.8°C) and 48.9°F (9.4°C).

Temperature

The beginning of May marks a shift in the average high-temperature, moving from April's fresh 54.3°F (12.4°C) to an enjoyable 65.8°F (18.8°C). In May, the temperature drops to an average of 48.9°F (9.4°C) at night.

Humidity

The average relative humidity in May is 81%.

Rainfall

In Clermont, Iowa, in May, it is raining for 17.3 days, with typically 3.78" (96mm) of accumulated precipitation. In Clermont, during the entire year, the rain falls for 131 days and collects up to 27.91" (709mm) of precipitation.

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, Clermont aggregates 0.12" (3mm) of snow. In Clermont, during the entire year, snow falls for 52.3 days and aggregates up to 21.26" (540mm) of snow.

Daylight

The average length of the day in May is 14h and 41min.
On the first day of May, sunrise is at 5:59 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:38 pm CDT.

Sunshine

In Clermont, the average sunshine in May is 8.1h.

UV index

In Clermont, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In May, an average UV index of 5 transforms into the following instructions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures?

Clermont in May has an average high-temperature of 65.8°F (18.8°C) and an average low-temperature of 48.9°F (9.4°C).

What is the average humidity in May in Clermont?

In Clermont, the average relative humidity in May is 81%.

How much does it rain in May?

In Clermont, in May, during 17.3 rainfall days, 3.78" (96mm) of precipitation is typically accumulated.

What is the last month it snows?

May is the last month it regularly snows in Clermont. During 0.3 snowfall days, in May, Clermont aggregates 0.12" (3mm) of snow.

What is the average length of the day in May?

The average day length in May is 14h and 41min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 5:59 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:38 pm CDT.

How many hours of sunshine does Clermont have in May?

In May, the average sunshine duration in Clermont is 8.1h.

How high is the UV index in May?

In Clermont, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
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
Clermont, IA

Average temperature in May - Clermont, IA
  • Average high temperature in May: 65.8°F

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (22.5°F).

  • Average low temperature in May: 48.9°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).

Average pressure in May
Clermont, IA

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

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in May
Clermont, IA

Average wind speed in May - Clermont, IA
  • Average wind speed in May: 9mph

The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

Average humidity in May
Clermont, IA

Average humidity in May - Clermont, IA
  • Average humidity in May: 81%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (75%).

Average rainfall in May
Clermont, IA

Average rainfall in May - Clermont, IA
  • Average rainfall in May: 3.78"

The wettest month (with the highest rainfall) is June (4.33").
The driest month (with the least rainfall) is January (0.98").

Average rainfall days in May
Clermont, IA

Average rainfall days in May - Clermont, IA
  • Average rainfall days in May: 17.3 days

The month with the highest number of rainy days is June (17.7 days).
The month with the least rainy days is February (3.8 days).

Average snowfall in May
Clermont, IA

Average snowfall in May - Clermont, IA
  • Average snowfall in May: 0.12"

The month with the highest snowfall is February (5.16").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Clermont, IA

Average snowfall days in May - Clermont, IA
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Clermont, 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 1min

The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in May
Clermont, IA

Average sunshine days in May - Clermont, IA
  • Average sunshine days in May: 12.3 days

The month with the most sunshine days is September (17 days).
The month with the least sunshine days is June (10.5 days).

Average UV index in May
Clermont, IA

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

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

Average cloud cover in May
Clermont, IA

Average cloud cover in May - Clermont, IA
  • Average cloud cover in May: 45

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in May
Clermont, IA

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

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

Clermont, Iowa, USA

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