May weather forecast
Vandalia, IN

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Weather in May

The last month of the spring, May, is a pleasant month in Vandalia, Indiana, with an average temperature ranging between min 55.4°F (13°C) and max 72.5°F (22.5°C).

Temperature

May witnesses an increase in the average high-temperature, moving from a refreshing 62.6°F (17°C) in April to an agreeable 72.5°F (22.5°C). Vandalia experiences a nighttime temperature average of 55.4°F (13°C) during May.

Humidity

The months with the highest humidity in Vandalia are May and July, with an average relative humidity of 82%.

Rainfall

In May, the rain falls for 18.4 days. Throughout May, 3.07" (78mm) of precipitation is accumulated. Throughout the year, in Vandalia, there are 154.9 rainfall days, and 26.18" (665mm) of precipitation is accumulated.

Snowfall

In Vandalia, Indiana, snow does not fall in May through September.

Daylight

In May, the average length of the day is 14h and 21min.
On the first day of May in Vandalia, sunrise is at 6:47 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 9:07 pm EDT.

Sunshine

In May, the average sunshine in Vandalia is 8.7h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 6 in May leads to these recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Updated: Feb 12, 2024 | Published by: Weather U.S. | Resources

Frequently asked questions

What are May temperatures in Vandalia?

The high-temperature in Vandalia during May is 72.5°F (22.5°C) and the low-temperature is 55.4°F (13°C).

What is the most humid month in Vandalia?

The months with the highest humidity are May and July, with an average relative humidity of 82%.

What is the average humidity in May in Vandalia?

The average relative humidity in May is 82%.

How much does it rain in Vandalia in May?

In May, in Vandalia, the rain falls for 18.4 days. Throughout May, 3.07" (78mm) of precipitation is accumulated.

When it does not snow in Vandalia?

May through September are months without snowfall in Vandalia, Indiana.

Does it snow in Vandalia in May?

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

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

The average day length in May in Vandalia, Indiana, is 14h and 21min.

When are sunrise and sunset in May in Vandalia?

On the first day of May, sunrise is at 6:47 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 9:07 pm EDT.

How long on average sun shines in May in Vandalia?

The average sunshine duration in May in Vandalia, Indiana, is 8.7h.

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

The months with the highest UV index in Vandalia, Indiana, are May through August, with an average maximum UV index of 6.

How high is the UV index in May in Vandalia?

In May, the average daily maximum UV index in Vandalia, Indiana, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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
Vandalia, IN

Average temperature in May - Vandalia, IN
  • Average high temperature in May: 72.5°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 (34.9°F).

  • Average low temperature in May: 55.4°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

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Average pressure in May
Vandalia, IN

Average pressure in May - Vandalia, IN
  • Average pressure in May: 29.97"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in May
Vandalia, IN

Average wind speed in May - Vandalia, IN
  • Average wind speed in May: 7.1mph

The windiest month (with the highest average wind speed) is February (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in May
Vandalia, IN

Average humidity in May - Vandalia, IN
  • Average humidity in May: 82%

The months with the highest relative humidity are May and July (82%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in May
Vandalia, IN

Average rainfall in May - Vandalia, IN
  • Average rainfall in May: 3.07"

The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.54").

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Average rainfall days in May
Vandalia, IN

Average rainfall days in May - Vandalia, IN
  • Average rainfall days in May: 18.4 days

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is January (8.3 days).

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Average snowfall in May
Vandalia, IN

Average snowfall in May - Vandalia, IN
  • Average snowfall in May: 0"

The month with the highest snowfall is January (2.17").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Vandalia, IN

Average snowfall days in May - Vandalia, IN
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (9.1 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
Vandalia, IN

Average daylight in May / Average sunshine in May - Vandalia, IN
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in May: 8h and 4min

The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The months with the least sunshine are January and December (Average sunshine: 4h and 18min).

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Average sunshine days in May
Vandalia, IN

Average sunshine days in May - Vandalia, IN
  • Average sunshine days in May: 9.8 days

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (9.8 days).

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Average UV index in May
Vandalia, IN

Average UV index in May - Vandalia, IN
  • Average UV index in May: 6

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

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Average cloud cover in May
Vandalia, IN

Average cloud cover in May - Vandalia, IN
  • Average cloud cover in May: 42

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in May
Vandalia, IN

Average visibility in May - Vandalia, IN
  • Average visibility in May: 5mi

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

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Vandalia, Indiana, USA

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