May weather forecast
Buffalo, IL

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Weather in May

The last month of the spring, May, is a pleasant month in Buffalo, Illinois, with temperature in the range of an average low of 56.5°F (13.6°C) and an average high of 72.9°F (22.7°C).

Temperature

The beginning of May marks a shift in the average high-temperature, moving from April's refreshing 63.1°F (17.3°C) to a pleasant 72.9°F (22.7°C). Throughout the month of May, Buffalo witnesses an average low-temperature of 56.5°F (13.6°C).

Humidity

The average relative humidity in May is 77%.

Rainfall

In Buffalo, in May, it is raining for 17 days, with typically 2.09" (53mm) of accumulated precipitation. Throughout the year, there are 131.5 rainfall days, and 18.54" (471mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Buffalo.

Daylight

The average length of the day in May in Buffalo is 14h and 24min.
On the first day of May in Buffalo, sunrise is at 5:56 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:19 pm CDT.

Sunshine

The average sunshine in May is 9.3h.

UV index

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 5 during May translates into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

What is the usual temperature for Buffalo in May?

The average high-temperature, in May, in Buffalo, is 72.9°F (22.7°C), while the average low-temperature is 56.5°F (13.6°C).

What is the average humidity in May in Buffalo?

In May, the average relative humidity in Buffalo is 77%.

How much does it rain in Buffalo in May?

In Buffalo, during May, the rain falls for 17 days and regularly aggregates up to 2.09" (53mm) of precipitation.

When it does not snow in Buffalo?

In Buffalo, Illinois, snow does not fall in May through October.

Does it snow in Buffalo in May?

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

How many hours of daylight does Buffalo have in May?

In May, the average day length in Buffalo, Illinois, is 14h and 24min.

When is the sunrise / sunset in May in Buffalo?

On the first day of May, sunrise is at 5:56 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:19 pm CDT.

How long on average sun shines in May in Buffalo?

The average sunshine duration in May is 9.3h.

How high is the UV index in May in Buffalo?

In May, the average daily maximum UV index in Buffalo is 5. A UV Index estimate of 3 to 5 represents a moderate 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
Buffalo, IL

Average temperature in May - Buffalo, IL
  • Average high temperature in May: 72.9°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.1°F).

  • Average low temperature in May: 56.5°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).

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Average pressure in May
Buffalo, IL

Average pressure in May - Buffalo, IL
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in May
Buffalo, IL

Average wind speed in May - Buffalo, IL
  • Average wind speed in May: 8.6mph

The windiest months (with the highest average wind speed) are January and April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

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Average humidity in May
Buffalo, IL

Average humidity in May - Buffalo, IL
  • Average humidity in May: 77%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in May
Buffalo, IL

Average rainfall in May - Buffalo, IL
  • Average rainfall in May: 2.09"

The wettest month (with the highest rainfall) is June (2.36").
The driest month (with the least rainfall) is December (0.83").

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Average rainfall days in May
Buffalo, IL

Average rainfall days in May - Buffalo, IL
  • Average rainfall days in May: 17 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (5.7 days).

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Average snowfall in May
Buffalo, IL

Average snowfall in May - Buffalo, IL
  • Average snowfall in May: 0"

The month with the highest snowfall is January (1.81").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Buffalo, IL

Average snowfall days in May - Buffalo, IL
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (8 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
Buffalo, IL

Average daylight in May / Average sunshine in May - Buffalo, IL
  • 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: 9h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in May
Buffalo, IL

Average sunshine days in May - Buffalo, IL
  • Average sunshine days in May: 11.5 days

The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (11.5 days).

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Average UV index in May
Buffalo, IL

Average UV index in May - Buffalo, IL
  • 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, November and December (UV index 2).

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Average cloud cover in May
Buffalo, IL

Average cloud cover in May - Buffalo, IL
  • Average cloud cover in May: 38

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are June, August and September (Cloud cover 30).

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Average visibility in May
Buffalo, IL

Average visibility in May - Buffalo, IL
  • Average visibility in May: 6mi

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

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Buffalo, Illinois, USA

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