May weather forecast
Truro, IA

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Weather in May

May, the last month of the spring in Truro, is an agreeable month, with an average temperature ranging between max 69.4°F (20.8°C) and min 52.7°F (11.5°C).

Temperature

As April transitions into May, Truro sees a rise in the average high-temperature, moving from a mild 59.7°F (15.4°C) to a pleasant 69.4°F (20.8°C). Throughout May, Truro experiences a low-temperature average of 52.7°F (11.5°C).

Humidity

The average relative humidity in May in Truro is 79%.

Rainfall

May is the month with the most rainfall in Truro, Iowa. Rain falls for 17.5 days and accumulates 3.98" (101mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Truro aggregates 0.35" (9mm) of snow. In Truro, during the entire year, snow falls for 35 days and aggregates up to 15.04" (382mm) of snow.

Daylight

In Truro, the average length of the day in May is 14h and 31min.
On the first day of the month, sunrise is at 6:11 am and sunset at 8:13 pm. On the last day of May, sunrise is at 5:44 am and sunset at 8:41 pm CDT.

Sunshine

In Truro, the average sunshine in May is 8.6h.

UV index

The average daily maximum UV index in May in Truro, Iowa, 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 ordinary person.
Note: The daily high UV index of 5 in May translates into this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Updated: Feb 12, 2024 | Published by: Weather U.S. | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the average May temperature in Truro?

Truro in May has an average high-temperature of 69.4°F (20.8°C) and an average low-temperature of 52.7°F (11.5°C).

What is the average humidity in May in Truro?

In May, the average relative humidity in Truro is 79%.

What is the rainiest month in Truro?

May is the month with the most rainfall. Rain falls for 17.5 days and accumulates 3.98" (101mm) of precipitation.

How many days does it rain in May in Truro?

In Truro, Iowa, in May, during 17.5 rainfall days, 3.98" (101mm) of precipitation is typically accumulated.

What is the last month it snows in Truro?

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

How many hours of daylight does Truro have in May?

The average day length in May in Truro is 14h and 31min.

When is the sunrise / sunset in May in Truro?

On the first day of May in Truro, sunrise is at 6:11 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:41 pm CDT.

How many hours of sunshine does Truro have in May?

In May, the average sunshine duration is 8.6h.

What is the UV index reading in May in Truro?

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
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
Truro, IA

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

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in May: 52.7°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

Average pressure in May
Truro, IA

Average pressure in May - Truro, 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).

Average wind speed in May
Truro, IA

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

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).

Average humidity in May
Truro, IA

Average humidity in May - Truro, IA
  • Average humidity in May: 79%

The months with the highest relative humidity are January, February and June (82%).
The month with the lowest relative humidity is October (71%).

Average rainfall in May
Truro, IA

Average rainfall in May - Truro, IA
  • Average rainfall in May: 3.98"

The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is January (0.91").

Average rainfall days in May
Truro, IA

Average rainfall days in May - Truro, IA
  • Average rainfall days in May: 17.5 days

The month with the highest number of rainy days is June (17.9 days).
The months with the least rainy days are January and February (3.8 days).

Average snowfall in May
Truro, IA

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

The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Truro, IA

Average snowfall days in May - Truro, 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).

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

Average daylight in May / Average sunshine in May - Truro, IA
  • Average daylight in May: 14h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in May: 8h and 4min

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

Average sunshine days in May
Truro, IA

Average sunshine days in May - Truro, IA
  • Average sunshine days in May: 11 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (9.8 days).

Average UV index in May
Truro, IA

Average UV index in May - Truro, 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, October, November and December (UV index 2).

Average cloud cover in May
Truro, IA

Average cloud cover in May - Truro, IA
  • Average cloud cover in May: 41

The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and September (Cloud cover 29).

Average visibility in May
Truro, IA

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

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

Truro, Iowa, USA

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