May weather forecast
Ames, IA

Weather in May

May, the last month of the spring in Ames, is an agreeable month, with an average temperature varying between 69.3°F (20.7°C) and 53.1°F (11.7°C).

Temperature

In May, the average high-temperature rises from a mild 58.5°F (14.7°C) in April to a pleasant 69.3°F (20.7°C). In Ames, Iowa, the average low-temperature is 53.1°F (11.7°C).

Humidity

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

Rainfall

May is the month with the most rainfall in Ames. Rain falls for 17.2 days and accumulates 4.09" (104mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Ames, Iowa. May is the last month it regularly snows in Ames, Iowa. During 0.2 snowfall days, in May, Ames aggregates 0.35" (9mm) of snow. Throughout the year, in Ames, there are 36.2 snowfall days, and 15.43" (392mm) of snow is accumulated.

Daylight

In Ames, Iowa, the average length of the day in May is 14h and 35min.
On the first day of May in Ames, sunrise is at 6:09 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:42 pm CDT.

Sunshine

In May, the average sunshine is 8.4h.

UV index

In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 5 in May interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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 temperature in May in Ames?

In May, the average high-temperature is 69.3°F (20.7°C), and the average low-temperature is 53.1°F (11.7°C).

What is the average humidity in May in Ames?

In May, the average relative humidity in Ames, Iowa, is 76%.

What is the wettest month in Ames?

May is the month with the most rainfall in Ames, Iowa. Rain falls for 17.2 days and accumulates 4.09" (104mm) of precipitation.

How much does it rain in Ames in May?

In Ames, Iowa, during May, the rain falls for 17.2 days and regularly aggregates up to 4.09" (104mm) of precipitation.

What is the last month it snows in Ames?

May is the last month it regularly snows. During 0.2 snowfall days, in May, Ames aggregates 0.35" (9mm) of snow.

What is the average length of the day in May in Ames?

In Ames, the average day length in May is 14h and 35min.

When is the sunrise / sunset in May in Ames?

On the first day of May in Ames, sunrise is at 6:09 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:42 pm CDT.

How long on average sun shines in May in Ames?

In Ames, the average sunshine duration in May is 8.4h.

What is the UV index intensity in May in Ames?

The average daily maximum UV index in May in Ames, Iowa, is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Ames, IA

Average temperature in May - Ames, IA
  • Average high temperature in May: 69.3°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (26.6°F).

  • Average low temperature in May: 53.1°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).

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Average pressure in May
Ames, IA

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in May
Ames, IA

Average wind speed in May - Ames, IA
  • Average wind speed in May: 9.1mph

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
Ames, IA

Average humidity in May - Ames, IA
  • Average humidity in May: 76%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in May
Ames, IA

Average rainfall in May - Ames, IA
  • Average rainfall in May: 4.09"

The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is January (0.94").

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Average rainfall days in May
Ames, IA

Average rainfall days in May - Ames, IA
  • Average rainfall days in May: 17.2 days

The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is February (3.3 days).

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Average snowfall in May
Ames, IA

Average snowfall in May - Ames, IA
  • Average snowfall in May: 0.35"

The month with the highest snowfall is January (4.06").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Ames, IA

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

The month with the highest number of snowfall days is January (9.1 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
Ames, IA

Average daylight in May / Average sunshine in May - Ames, IA
  • Average daylight in May: 14h and 35min

The month with the longest days is June (Average daylight: 15h and 11min).
The month with the shortest days is December (Average daylight: 9h and 11min).

  • Average sunshine in May: 8h and 24min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in May
Ames, IA

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

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (10.4 days).

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Average UV index in May
Ames, IA

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

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

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Average cloud cover in May
Ames, IA

Average cloud cover in May - Ames, IA
  • Average cloud cover in May: 43

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 31).

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Average visibility in May
Ames, IA

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

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

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