Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The commencement of May sees a shift in the average high-temperature, moving from a refreshing 58.5°F (14.7°C) in April to a pleasant 69.4°F (20.8°C). During May, Grand Junction records a consistent average nighttime temperature of 53.1°F (11.7°C).Humidity
The average relative humidity in May in Grand Junction is 74%.Rainfall
May is the month with the most rainfall in Grand Junction. Rain falls for 16.2 days and accumulates 4.06" (103mm) 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, Grand Junction aggregates 0.12" (3mm) of snow. Throughout the year, in Grand Junction, Iowa, there are 38.1 snowfall days, and 15.31" (389mm) of snow is accumulated.Daylight
The average length of the day in May in Grand Junction is 14h and 35min.On the first day of May in Grand Junction, sunrise is at 6:11 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:45 pm CDT.
Sunshine
The average sunshine in May in Grand Junction is 8.6h.UV index
The average daily maximum UV index in May in Grand Junction is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In May, the UV index of 5 transforms into the following advice:
Take necessary precautions - Defending against sun damage is advocated. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Grand Junction in May?
What is the average humidity in May in Grand Junction?
What is the wettest month in Grand Junction?
How much does it rain in Grand Junction in May?
What is the last month it snows in Grand Junction?
What is the average length of the day in May in Grand Junction?
What time are sunrise and sunset in May in Grand Junction?
How many hours of sunshine does Grand Junction have in May?
How high is the UV index in May in Grand Junction?
Average temperature in May
Grand Junction, IA
- Average high temperature in May: 69.4°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in May: 53.1°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in May
Grand Junction, IA
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Grand Junction, IA
- Average wind speed in May: 9.1mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in May
Grand Junction, IA
- Average humidity in May: 74%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).
Average rainfall in May
Grand Junction, IA
- Average rainfall in May: 4.06"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in May
Grand Junction, IA
- Average rainfall days in May: 16.2 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in May
Grand Junction, IA
- Average snowfall in May: 0.12"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Grand Junction, IA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Grand Junction, IA
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in May
Grand Junction, IA
- Average sunshine days in May: 13.3 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in May
Grand Junction, IA
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in May
Grand Junction, IA
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in May
Grand Junction, IA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Grand Junction, Iowa, USA
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