May weather forecast
Treynor, IA

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Weather in May

May, the last month of the spring in Treynor, is an agreeable month, with an average temperature ranging between min 53.8°F (12.1°C) and max 70.9°F (21.6°C).

Temperature

With the beginning of May, Treynor's average high-temperature sees an increase, transitioning from a refreshing 60.8°F (16°C) in April to an agreeable 70.9°F (21.6°C). An average low-temperature of 53.8°F (12.1°C) is noted during the nights in May.

Humidity

In May, the average relative humidity is 73%.

Rainfall

May is the month with the most rainfall. Rain falls for 17.5 days and accumulates 4.09" (104mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Treynor. May is the last month it regularly snows. During 0.2 snowfall days, in May, Treynor aggregates 0.12" (3mm) of snow. In Treynor, during the entire year, snow falls for 33.7 days and aggregates up to 13.07" (332mm) of snow.

Daylight

In May, the average length of the day is 14h and 31min.
On the first day of May, sunrise is at 6:18 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:48 pm CDT.

Sunshine

In Treynor, the average sunshine in May is 8.9h.

UV index

In Treynor, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 5 in May interprets into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Treynor in May?

In May, the average high-temperature and low-temperature are 70.9°F (21.6°C) and 53.8°F (12.1°C) respectively.

What is the average humidity in May?

In Treynor, the average relative humidity in May is 73%.

What is the rainiest month?

May is the month with the most rainfall. Rain falls for 17.5 days and accumulates 4.09" (104mm) of precipitation.

How much does it rain in Treynor in May?

In Treynor, in May, during 17.5 rainfall days, 4.09" (104mm) of precipitation is typically accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.2 snowfall days, in May, Treynor aggregates 0.12" (3mm) of snow.

How many hours of daylight does Treynor have in May?

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

When are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 6:18 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:48 pm CDT.

How long on average sun shines in May?

In May, the average sunshine duration is 8.9h.

How high is the UV index in May?

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability 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
Treynor, IA

Average temperature in May - Treynor, IA
  • Average high temperature in May: 70.9°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in May: 53.8°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).

Average pressure in May
Treynor, IA

Average pressure in May - Treynor, IA
  • Average pressure in May: 29.92"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in May
Treynor, IA

Average wind speed in May - Treynor, IA
  • Average wind speed in May: 8.9mph

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

Average humidity in May
Treynor, IA

Average humidity in May - Treynor, IA
  • Average humidity in May: 73%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is October (67%).

Average rainfall in May
Treynor, IA

Average rainfall in May - Treynor, 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 (0.83").

Average rainfall days in May
Treynor, IA

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

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (4.2 days).

Average snowfall in May
Treynor, IA

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

The month with the highest snowfall is February (3.74").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Treynor, IA

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

The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Treynor, 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 5min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in May
Treynor, IA

Average sunshine days in May - Treynor, IA
  • Average sunshine days in May: 11.5 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (11.3 days).

Average UV index in May
Treynor, IA

Average UV index in May - Treynor, 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
Treynor, IA

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

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 25).

Average visibility in May
Treynor, IA

Average visibility in May - Treynor, 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).

Treynor, Iowa, USA

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