May weather forecast
Castleton, IN

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Weather in May

May, the last month of the spring in Castleton, is an agreeable month, with an average temperature fluctuating between 55.4°F (13°C) and 71.8°F (22.1°C).

Temperature

May signals a shift in the average high-temperature, moving from April's enjoyable 61°F (16.1°C) to a pleasant 71.8°F (22.1°C). Nighttime temperatures in Castleton, Indiana, consistently average a mild 55.4°F (13°C) during May.

Humidity

In Castleton, the average relative humidity in May is 78%.

Rainfall

The month with the most rainfall in Castleton is May, when the rain falls for 17.4 days and typically aggregates up to 2.64" (67mm) of precipitation.

Snowfall

In Castleton, snow does not fall in May through September.

Daylight

In Castleton, the average length of the day in May is 14h and 24min.
On the first day of the month, sunrise is at 6:43 am and sunset at 8:39 pm. On the last day of May, sunrise is at 6:17 am and sunset at 9:06 pm EDT.

Sunshine

The average sunshine in May in Castleton is 8.5h.

UV index

In Castleton, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In May, the maximum UV index of 5 transforms into these recommendations:
Take precautions - Protection against sun damage is advised. Around midday, solar radiation is most harmful; hence, exposure should be limited. Enhance your sun protection with tightly woven, yet airy clothing. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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Frequently asked questions

What is the average May temperature in Castleton?

May temperatures in Castleton vary between a high-temperature of 71.8°F (22.1°C) and a low-temperature of 55.4°F (13°C).

What is the average humidity in May in Castleton?

In May, the average relative humidity in Castleton, Indiana, is 78%.

What is the wettest month in Castleton?

The month with the most rainfall in Castleton is May, when the rain falls for 17.4 days and typically aggregates up to 2.64" (67mm) of precipitation.

How many days does it rain in May in Castleton?

In Castleton, in May, during 17.4 rainfall days, 2.64" (67mm) of precipitation is typically accumulated.

When it does not snow in Castleton?

May through September are months without snowfall in Castleton.

Does it snow in Castleton in May?

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

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

In Castleton, Indiana, the average day length in May is 14h and 24min.

When is the sunrise / sunset in May in Castleton?

On the first day of May in Castleton, Indiana, sunrise is at 6:43 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 9:06 pm EDT.

How many hours of sunshine does Castleton have in May?

In Castleton, the average sunshine duration in May is 8.5h.

How high is the UV index in May in Castleton?

The average daily maximum UV index in May in Castleton, Indiana, is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to 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
Castleton, IN

Average temperature in May - Castleton, IN
  • Average high temperature in May: 71.8°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in May: 55.4°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

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Average pressure in May
Castleton, IN

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

The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in May
Castleton, IN

Average wind speed in May - Castleton, IN
  • Average wind speed in May: 8.1mph

The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

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Average humidity in May
Castleton, IN

Average humidity in May - Castleton, IN
  • Average humidity in May: 78%

The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in May
Castleton, IN

Average rainfall in May - Castleton, IN
  • Average rainfall in May: 2.64"

The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is February (1.18").

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Average rainfall days in May
Castleton, IN

Average rainfall days in May - Castleton, IN
  • Average rainfall days in May: 17.4 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (6 days).

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Average snowfall in May
Castleton, IN

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

The month with the highest snowfall is February (2.01").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Castleton, IN

Average snowfall days in May - Castleton, IN
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (8.5 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
Castleton, IN

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in May: 8h and 3min

The months with the most sunshine are June and 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
Castleton, IN

Average sunshine days in May - Castleton, IN
  • Average sunshine days in May: 11.3 days

The months with the most sunshine days are October and November (18.7 days).
The month with the least sunshine days is May (11.3 days).

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Average UV index in May
Castleton, IN

Average UV index in May - Castleton, IN
  • Average UV index in May: 5

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

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Average cloud cover in May
Castleton, IN

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

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in May
Castleton, IN

Average visibility in May - Castleton, IN
  • Average visibility in May: 6mi

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

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Castleton, Indiana, USA

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