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 shift into May is characterized by a rise in the average high-temperature, transitioning from April's mild 57.4°F (14.1°C) to an agreeable 69.3°F (20.7°C). Merrill, during May nights, observes an average temperature of 52.3°F (11.3°C).Humidity
In Merrill, the average relative humidity in May is 69%.Rainfall
In May, in Merrill, the rain falls for 15.5 days. Throughout May, 2.24" (57mm) of precipitation is accumulated. Throughout the year, there are 112 rainfall days, and 15.71" (399mm) of precipitation is accumulated.Snowfall
In Merrill, Iowa, snow does not fall in May through September.Daylight
The average length of the day in May in Merrill is 14h and 39min.On the first day of May in Merrill, sunrise is at 6:18 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:56 pm CDT.
Sunshine
In Merrill, the average sunshine in May is 8.8h.UV index
The average daily maximum UV index in May in Merrill is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In May, an average UV index of 5 transforms into the following instructions:
Guard yourself - Precautionary measures against sun damage are advocated. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Frequently asked questions
What is the usual temperature for Merrill in May?
What is the average humidity in May in Merrill?
How many days does it rain in May in Merrill?
When it does not snow in Merrill?
Does it snow in Merrill in May?
What is the average length of the day in May in Merrill?
When is the sunrise / sunset in May in Merrill?
How long on average sun shines in May in Merrill?
What is the UV index intensity in May in Merrill?
Average temperature in May
Merrill, IA
- Average high temperature in May: 69.3°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in May: 52.3°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).
Average pressure in May
Merrill, IA
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in May
Merrill, IA
- Average wind speed in May: 9.6mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in May
Merrill, IA
- Average humidity in May: 69%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (66%).
Average rainfall in May
Merrill, IA
- Average rainfall in May: 2.24"
The wettest month (with the highest rainfall) is June (2.48").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in May
Merrill, IA
- Average rainfall days in May: 15.5 days
The month with the highest number of rainy days is June (16.5 days).
The months with the least rainy days are February and December (2.6 days).
Average snowfall in May
Merrill, IA
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.85").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Merrill, IA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Merrill, 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in May
Merrill, IA
- Average sunshine days in May: 13.4 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in May
Merrill, 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, November and December (UV index 2).
Average cloud cover in May
Merrill, IA
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in May
Merrill, IA
- 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).
Merrill, Iowa, USA
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