May weather forecast
Keokuk, IA

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Weather in May

May is a month of growth and warmth in Keokuk. The transition from the mildness of spring to the warmth of summer is nearly complete. Average temperatures continue to rise, making the climate quite pleasant. Outdoor activities are encouraged with longer daylight hours and more consistent sunshine. The increased rainfall, peaking at 3.9" (99mm), aids in maintaining the city’s vibrant green aura.

Temperature

May's onset in Keokuk, Iowa, brings a rise in the average high-temperature, moving from an enjoyable 62.2°F (16.8°C) in April to a pleasant 71.6°F (22°C). An average low-temperature of 55°F (12.8°C) is anticipated throughout the nights in Keokuk during May.

Humidity

The average relative humidity in May is 80%.

Rainfall

May is the month with the most rainfall in Keokuk. Rain falls for 17.3 days and accumulates 3.9" (99mm) of precipitation.

Snowfall

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

Daylight

In Keokuk, the average length of the day in May is 14h and 26min.
On the first day of the month, sunrise is at 6:03 am and sunset at 8:01 pm. On the last day of May, sunrise is at 5:37 am and sunset at 8:29 pm CDT.

Sunshine

In May, the average sunshine is 9h.

UV index

The average daily maximum UV index in May in Keokuk is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In May, the UV index of 5 transforms into the following advice:
Make use of precautions - Shielding skin and eyes from injury is a requirement. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

What is the usual temperature for Keokuk in May?

Keokuk in May has an average high-temperature of 71.6°F (22°C) and an average low-temperature of 55°F (12.8°C).

What is the average humidity in May in Keokuk?

In Keokuk, Iowa, the average relative humidity in May is 80%.

What is the rainiest month in Keokuk?

The month with the most rainfall is May, when the rain falls for 17.3 days and typically aggregates up to 3.9" (99mm) of precipitation.

How many days does it rain in May in Keokuk?

In Keokuk, Iowa, during May, the rain falls for 17.3 days and regularly aggregates up to 3.9" (99mm) of precipitation.

When it does not snow in Keokuk?

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

Does it snow in Keokuk in May?

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

How many hours of daylight does Keokuk have in May?

In May, the average day length in Keokuk is 14h and 26min.

When are sunrise and sunset in May in Keokuk?

On the first day of May, sunrise is at 6:03 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:29 pm CDT.

How long on average sun shines in May in Keokuk?

In May, the average sunshine duration in Keokuk is 9h.

What is the UV index reading in May in Keokuk?

In Keokuk, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health threat 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
Keokuk, IA

Average temperature in May - Keokuk, IA
  • Average high temperature in May: 71.6°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in May: 55°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).

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Average pressure in May
Keokuk, IA

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

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in May
Keokuk, IA

Average wind speed in May - Keokuk, IA
  • Average wind speed in May: 8.5mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in May
Keokuk, IA

Average humidity in May - Keokuk, IA
  • Average humidity in May: 80%

The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in May
Keokuk, IA

Average rainfall in May - Keokuk, IA
  • Average rainfall in May: 3.9"

The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is January (1.34").

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Average rainfall days in May
Keokuk, IA

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

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (5.7 days).

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Average snowfall in May
Keokuk, IA

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

The month with the highest snowfall is January (3.94").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Keokuk, IA

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

The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Keokuk, IA
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in May: 9h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

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Average sunshine days in May
Keokuk, IA

Average sunshine days in May - Keokuk, IA
  • Average sunshine days in May: 11.3 days

The month with the most sunshine days is December (18.6 days).
The month with the least sunshine days is June (10.9 days).

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Average UV index in May
Keokuk, IA

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in May
Keokuk, IA

Average cloud cover in May - Keokuk, IA
  • Average cloud cover in May: 39

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in May
Keokuk, IA

Average visibility in May - Keokuk, 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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Keokuk, Iowa, USA

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