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 transition from April to May brings a temperature rise, with average high-temperatures increasing from a fresh 54.7°F (12.6°C) to a refreshing 66.6°F (19.2°C). May brings an average low-temperature of 48.6°F (9.2°C) to McGregor.Humidity
In May, the average relative humidity is 81%.Rainfall
In McGregor, in May, it is raining for 18.1 days, with typically 3.19" (81mm) of accumulated precipitation. Throughout the year, there are 124.7 rainfall days, and 22.56" (573mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in McGregor, Iowa. During 0.1 snowfall days, in May, McGregor aggregates 0.04" (1mm) of snow. In McGregor, during the entire year, snow falls for 44.5 days and aggregates up to 15.47" (393mm) of snow.Daylight
In May, the average length of the day is 14h and 41min.On the first day of the month, sunrise is at 5:57 am and sunset at 8:06 pm. On the last day of May, sunrise is at 5:28 am and sunset at 8:36 pm CDT.
Sunshine
In McGregor, the average sunshine in May is 8.1h.UV index
In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 5 during May leads to these advisories:
Take necessary precautions - Defending against sun damage is advocated. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows in McGregor?
How many hours of daylight does McGregor have in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
How high is the UV index in May in McGregor?
Average temperature in May
McGregor, IA
- Average high temperature in May: 66.6°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (23.2°F).
- Average low temperature in May: 48.6°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in May
McGregor, IA
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in May
McGregor, IA
- Average wind speed in May: 8.5mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in May
McGregor, IA
- Average humidity in May: 81%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is October (76%).
Average rainfall in May
McGregor, IA
- Average rainfall in May: 3.19"
The wettest month (with the highest rainfall) is June (3.9").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in May
McGregor, IA
- Average rainfall days in May: 18.1 days
The month with the highest number of rainy days is June (18.6 days).
The month with the least rainy days is February (3.6 days).
Average snowfall in May
McGregor, IA
- Average snowfall in May: 0.04"
The month with the highest snowfall is February (3.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
McGregor, IA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
McGregor, IA
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in May
McGregor, IA
- Average sunshine days in May: 11.1 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (9.6 days).
Average UV index in May
McGregor, 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, November and December (UV index 1).
Average cloud cover in May
McGregor, IA
- Average cloud cover in May: 45
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in May
McGregor, IA
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
McGregor, Iowa, USA
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