May weather forecast
Charles City, IA

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Weather in May

May introduces a sunnier disposition to Charles City, Iowa, with the weather now firmly inside the domain of spring. The departure from the April showers and chill is significant, providing ample opportunities for outdoor pursuits. A considerable increase to an average of 3.82" (97mm) in rainfall replenishes the region's reservoirs, encouraging a lush growth around. An extension in daylight hours gifts the city with more sunshine, augmenting the beauty of the spring bloom. Although May still holds onto some vestiges of the cooler weather, it undoubtedly rings the bell for the forthcoming summer.

Temperature

The shift from April to May in Charles City sees an increase in the average high-temperature, transitioning from a fresh 54.9°F (12.7°C) to an enjoyable 66.7°F (19.3°C). Charles City witnesses an average low-temperature of 50.5°F (10.3°C) throughout the month of May.

Humidity

In May, the average relative humidity is 76%.

Rainfall

In Charles City, in May, it is raining for 19.2 days, with typically 3.82" (97mm) of accumulated precipitation. In Charles City, during the entire year, the rain falls for 136.1 days and collects up to 27.32" (694mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Charles City. May is the last month it regularly snows in Charles City. During 0.3 snowfall days, in May, Charles City aggregates 0.47" (12mm) of snow. In Charles City, during the entire year, snow falls for 59.5 days and aggregates up to 25.04" (636mm) of snow.

Daylight

In Charles City, the average length of the day in May is 14h and 41min.
On the first day of May, sunrise is at 6:03 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:42 pm CDT.

Sunshine

In Charles City, the average sunshine in May is 8.3h.

UV index

In May, the average daily maximum UV index in Charles City is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A maximum UV index of 5 in May translates into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the temperature in May in Charles City?

The high-temperature, in May, in Charles City, records 66.7°F (19.3°C), while the low-temperature is 50.5°F (10.3°C).

What is the average humidity in May in Charles City?

In Charles City, the average relative humidity in May is 76%.

How much does it rain in Charles City in May?

In May, in Charles City, Iowa, the rain falls for 19.2 days. Throughout May, 3.82" (97mm) of precipitation is accumulated.

What is the last month it snows in Charles City?

May is the last month it regularly snows in Charles City. During 0.3 snowfall days, in May, Charles City aggregates 0.47" (12mm) of snow.

What is the average length of the day in May in Charles City?

In May, the average day length in Charles City, Iowa, is 14h and 41min.

What time are sunrise and sunset in May in Charles City?

In May, on the first day of the month, sunrise is at 6:03 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:42 pm CDT.

How many hours of sunshine does Charles City have in May?

In May, the average sunshine duration in Charles City is 8.3h.

What is the UV index intensity in May in Charles City?

In Charles City, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium hazard to health 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
Charles City, IA

Average temperature in May - Charles City, IA
  • Average high temperature in May: 66.7°F

The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (22.6°F).

  • Average low temperature in May: 50.5°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).

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Average pressure in May
Charles City, IA

Average pressure in May - Charles City, IA
  • Average pressure in May: 29.93"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in May
Charles City, IA

Average wind speed in May - Charles City, IA
  • Average wind speed in May: 9.3mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

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Average humidity in May
Charles City, IA

Average humidity in May - Charles City, IA
  • Average humidity in May: 76%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in May
Charles City, IA

Average rainfall in May - Charles City, IA
  • Average rainfall in May: 3.82"

The wettest month (with the highest rainfall) is June (4.17").
The driest month (with the least rainfall) is January (1.14").

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Average rainfall days in May
Charles City, IA

Average rainfall days in May - Charles City, IA
  • Average rainfall days in May: 19.2 days

The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is February (4.3 days).

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Average snowfall in May
Charles City, IA

Average snowfall in May - Charles City, IA
  • Average snowfall in May: 0.47"

The month with the highest snowfall is February (6.5").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Charles City, IA

Average snowfall days in May - Charles City, IA
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (14.3 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
Charles City, IA

Average daylight in May / Average sunshine in May - Charles City, 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 2min

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in May
Charles City, IA

Average sunshine days in May - Charles City, IA
  • Average sunshine days in May: 9.6 days

The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is June (9.3 days).

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Average UV index in May
Charles City, IA

Average UV index in May - Charles City, IA
  • Average UV index in May: 5

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

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Average cloud cover in May
Charles City, IA

Average cloud cover in May - Charles City, IA
  • Average cloud cover in May: 44

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in May
Charles City, IA

Average visibility in May - Charles City, IA
  • Average visibility in May: 6mi

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

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Charles City, Iowa, USA

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