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
With the transition into May, Grimes experiences an increase in average high-temperatures, moving up from a mild 59.4°F (15.2°C) in April to an agreeable 69.6°F (20.9°C). Throughout May, Grimes witnesses a consistent average low-temperature of 52.9°F (11.6°C).Humidity
The average relative humidity in May is 77%.Rainfall
The wettest months in Grimes are May and June, with an average 2.52" (64mm) of rainfall.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Grimes aggregates 0.08" (2mm) of snow. Throughout the year, there are 29.6 snowfall days, and 6.77" (172mm) of snow is accumulated.Daylight
In Grimes, the average length of the day in May is 14h and 34min.On the first day of May in Grimes, sunrise is at 6:10 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:42 pm CDT.
Sunshine
In Grimes, the average sunshine in May is 8.8h.UV index
In Grimes, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 5 in May interprets into the following advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
What is the temperature in May in Grimes?
What is the average humidity in May in Grimes?
What is the wettest month in Grimes?
How many days does it rain in May in Grimes?
What is the last month it snows in Grimes?
How many hours of daylight does Grimes have in May?
When are sunrise and sunset in May in Grimes?
How many hours of sunshine does Grimes have in May?
What is the UV index intensity in May in Grimes?
Average temperature in May
Grimes, IA
- Average high temperature in May: 69.6°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in May: 52.9°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in May
Grimes, 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
Grimes, IA
- Average wind speed in May: 8.8mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in May
Grimes, IA
- Average humidity in May: 77%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Grimes, IA
- Average rainfall in May: 2.52"
The wettest months (with the highest rainfall) are May and June (2.52").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in May
Grimes, IA
- Average rainfall days in May: 16.3 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (3.5 days).
Average snowfall in May
Grimes, IA
- Average snowfall in May: 0.08"
The month with the highest snowfall is January (2.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Grimes, IA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Grimes, 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in May
Grimes, IA
- Average sunshine days in May: 12.5 days
The month with the most sunshine days is December (22.8 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in May
Grimes, IA
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Grimes, IA
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is September (Cloud cover 28).
Average visibility in May
Grimes, IA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Grimes, Iowa, USA
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