May weather forecast
Ossian, IA

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Weather in May

The last month of the spring, May, is a refreshing month in Ossian, Iowa, with temperature in the range of an average low of 48.7°F (9.3°C) and an average high of 65.7°F (18.7°C).

Temperature

May's onset witnesses a shift in the average high-temperature, moving from a cool 54°F (12.2°C) in April to a refreshing 65.7°F (18.7°C). The nights of May in Ossian, Iowa, anticipate an average low-temperature of 48.7°F (9.3°C).

Humidity

In Ossian, the average relative humidity in May is 81%.

Rainfall

In Ossian, in May, it is raining for 20.3 days, with typically 4.06" (103mm) of accumulated precipitation. In Ossian, during the entire year, the rain falls for 149 days and collects up to 30.59" (777mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in Ossian. During 0.4 snowfall days, in May, Ossian aggregates 0.16" (4mm) of snow. Throughout the year, in Ossian, there are 60.9 snowfall days, and 24.37" (619mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 41min.
On the first day of May, sunrise is at 5:59 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:39 pm CDT.

Sunshine

In May, the average sunshine in Ossian is 8.2h.

UV index

The months with the highest UV index in Ossian are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: During May, 5 as the daily maximum UV index converts into the following advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What are the temperatures in Ossian in May?

In May, the average high-temperature and low-temperature in Ossian are 65.7°F (18.7°C) and 48.7°F (9.3°C) respectively.

What is the average humidity in May in Ossian?

In Ossian, the average relative humidity in May is 81%.

How many days does it rain in May in Ossian?

In Ossian, in May, during 20.3 rainfall days, 4.06" (103mm) of precipitation is typically accumulated.

What is the last month it snows in Ossian?

May is the last month it regularly snows. During 0.4 snowfall days, in May, Ossian aggregates 0.16" (4mm) of snow.

How many hours of daylight does Ossian have in May?

In May, the average day length in Ossian is 14h and 41min.

What time are sunrise and sunset in May in Ossian?

In May, on the first day of the month, sunrise is at 5:59 am and sunset at 8:08 pm. On the last day of the month, in Ossian, sunrise is at 5:30 am and sunset at 8:39 pm CDT.

How many hours of sunshine does Ossian have in May?

In Ossian, Iowa, the average sunshine duration in May is 8.2h.

What are the months with the highest UV index in Ossian?

The months with the highest UV index in Ossian, Iowa, are May through August, with an average maximum UV index of 5.

What is the UV index reading in May in Ossian?

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe 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
Ossian, IA

Average temperature in May - Ossian, IA
  • Average high temperature in May: 65.7°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (22.3°F).

  • Average low temperature in May: 48.7°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).

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Average pressure in May
Ossian, IA

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

The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in May
Ossian, IA

Average wind speed in May - Ossian, IA
  • Average wind speed in May: 9mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (7mph).

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Average humidity in May
Ossian, IA

Average humidity in May - Ossian, IA
  • Average humidity in May: 81%

The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is October (76%).

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Average rainfall in May
Ossian, IA

Average rainfall in May - Ossian, IA
  • Average rainfall in May: 4.06"

The wettest month (with the highest rainfall) is June (5.04").
The driest month (with the least rainfall) is January (1.1").

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Average rainfall days in May
Ossian, IA

Average rainfall days in May - Ossian, IA
  • Average rainfall days in May: 20.3 days

The months with the highest number of rainy days are May and June (20.3 days).
The month with the least rainy days is February (4.4 days).

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Average snowfall in May
Ossian, IA

Average snowfall in May - Ossian, IA
  • Average snowfall in May: 0.16"

The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Ossian, IA

Average snowfall days in May - Ossian, IA
  • Average snowfall days in May: 0.4 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
Ossian, IA

Average daylight in May / Average sunshine in May - Ossian, 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 1min

The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in May
Ossian, IA

Average sunshine days in May - Ossian, IA
  • Average sunshine days in May: 8.2 days

The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is June (7.1 days).

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Average UV index in May
Ossian, IA

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

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in May
Ossian, IA

Average cloud cover in May - Ossian, IA
  • Average cloud cover in May: 45

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in May
Ossian, IA

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

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

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Ossian, Iowa, USA

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