May weather forecast
Granby, MO

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Weather in May

May, the last month of the spring in Granby, is a warm month, with an average temperature fluctuating between 57°F (13.9°C) and 75.9°F (24.4°C).

Temperature

Granby in May experiences a slight uptick in the average high-temperature, adjusting from April's refreshing 67.6°F (19.8°C) to a warm 75.9°F (24.4°C). Throughout May, Granby records an average temperature of 57°F (13.9°C) at night.

Humidity

With an average relative humidity of 78%, May is the most humid month.

Rainfall

The month with the most rainfall is May, when the rain falls for 18.5 days and typically aggregates up to 5.35" (136mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Granby aggregates 0.24" (6mm) of snow. Throughout the year, in Granby, there are 18 snowfall days, and 6.26" (159mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 10min.
On the first day of the month, sunrise is at 6:21 am and sunset at 8:06 pm. On the last day of May, sunrise is at 5:59 am and sunset at 8:30 pm CDT.

Sunshine

In Granby, the average sunshine in May is 9.1h.

UV index

The average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 6 in May interprets into the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Updated: Jul 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Granby in May?

In May, in Granby, the average high-temperature is 75.9°F (24.4°C), and the average low-temperature is 57°F (13.9°C).

What is the most humid month?

May is the most humid month, with an average relative humidity of 78%.

What is the average humidity in May?

In May, the average relative humidity is 78%.

What is the wettest month?

The month with the most rainfall is May, when the rain falls for 18.5 days and typically aggregates up to 5.35" (136mm) of precipitation.

How much does it rain in May?

In Granby, Missouri, in May, it is raining for 18.5 days, with typically 5.35" (136mm) of accumulated precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Granby aggregates 0.24" (6mm) of snow.

How many hours of daylight does Granby have in May?

The average day length in May is 14h and 10min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 6:21 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:30 pm CDT.

How many hours of sunshine does Granby have in May?

In May, the average sunshine duration is 9.1h.

What is the UV index reading in May?

In May, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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
Granby, MO

Average temperature in May - Granby, MO
  • Average high temperature in May: 75.9°F

The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (43°F).

  • Average low temperature in May: 57°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).

Average pressure in May
Granby, MO

Average pressure in May - Granby, MO
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in May
Granby, MO

Average wind speed in May - Granby, MO
  • Average wind speed in May: 8.8mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

Average humidity in May
Granby, MO

Average humidity in May - Granby, MO
  • Average humidity in May: 78%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are July, August and October (72%).

Average rainfall in May
Granby, MO

Average rainfall in May - Granby, MO
  • Average rainfall in May: 5.35"

The wettest month (with the highest rainfall) is May (5.35").
The driest month (with the least rainfall) is February (1.77").

Average rainfall days in May
Granby, MO

Average rainfall days in May - Granby, MO
  • Average rainfall days in May: 18.5 days

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is December (8.2 days).

Average snowfall in May
Granby, MO

Average snowfall in May - Granby, MO
  • Average snowfall in May: 0.24"

The month with the highest snowfall is February (2.13").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Granby, MO

Average snowfall days in May - Granby, MO
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is February (5.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Granby, MO

Average daylight in May / Average sunshine in May - Granby, MO
  • Average daylight in May: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in May: 9h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).

Average sunshine days in May
Granby, MO

Average sunshine days in May - Granby, MO
  • Average sunshine days in May: 10.2 days

The month with the most sunshine days is December (19.2 days).
The month with the least sunshine days is May (10.2 days).

Average UV index in May
Granby, MO

Average UV index in May - Granby, MO
  • Average UV index in May: 6

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in May
Granby, MO

Average cloud cover in May - Granby, MO
  • Average cloud cover in May: 37

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 24).

Average visibility in May
Granby, MO

Average visibility in May - Granby, MO
  • 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).

Granby, Missouri, USA

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