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 arrival of May sees a shift in the average high-temperature, moving from a refreshing 64.8°F (18.2°C) in April to a moderately hot 73.8°F (23.2°C). Grinnell encounters a significant temperature differential, with an average low-temperature of 52°F (11.1°C) during May nights.Humidity
The average relative humidity in May is 59%.Rainfall
The month with the most rainfall is May, when the rain falls for 13.4 days and typically aggregates up to 2.36" (60mm) of precipitation.Snowfall
In Grinnell, snow does not fall in May through September.Daylight
The average length of the day in May is 14h and 20min.On the first day of May, sunrise is at 6:43 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 9:02 pm CDT.
Sunshine
In May, the average sunshine is 10.2h.UV index
In Grinnell, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 6 during May leads to these advisories:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Grinnell in May?
What is the average humidity in May in Grinnell?
What is the wettest month in Grinnell?
How many days does it rain in May in Grinnell?
When it does not snow in Grinnell?
Does it snow in Grinnell in May?
What is the average length of the day in May in Grinnell?
When is the sunrise / sunset in May in Grinnell?
How many hours of sunshine does Grinnell have in May?
What is the UV index intensity in May in Grinnell?
Average temperature in May
Grinnell, KS
- Average high temperature in May: 73.8°F
The warmest month (with the highest average high temperature) is July (92.5°F).
The month with the lowest average high temperature is December (41.9°F).
- Average low temperature in May: 52°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in May
Grinnell, KS
- Average pressure in May: 29.88"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.81"Hg).
Average wind speed in May
Grinnell, KS
- Average wind speed in May: 11.6mph
The windiest month (with the highest average wind speed) is April (12.9mph).
The calmest month (with the lowest average wind speed) is August (10.1mph).
Average humidity in May
Grinnell, KS
- Average humidity in May: 59%
The months with the highest relative humidity are January and December (63%).
The month with the lowest relative humidity is July (50%).
Average rainfall in May
Grinnell, KS
- Average rainfall in May: 2.36"
The wettest month (with the highest rainfall) is May (2.36").
The driest months (with the least rainfall) are January and November (0.39").
Average rainfall days in May
Grinnell, KS
- Average rainfall days in May: 13.4 days
The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is November (4 days).
Average snowfall in May
Grinnell, KS
- Average snowfall in May: 0"
The month with the highest snowfall is December (1.06").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Grinnell, KS
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Grinnell, KS
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 10h and 1min
The months with the most sunshine are June and July (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in May
Grinnell, KS
- Average sunshine days in May: 15.2 days
The month with the most sunshine days is December (23.7 days).
The months with the least sunshine days are June and July (14.7 days).
Average UV index in May
Grinnell, KS
- Average UV index in May: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Grinnell, KS
- Average cloud cover in May: 29
The months with the most cloud cover are February and April (Cloud cover 31).
The month with the least cloud cover is June (Cloud cover 17).
Average visibility in May
Grinnell, KS
- 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).
Grinnell, Kansas, USA
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