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
As April transitions into May, Winona sees a rise in the average high-temperature, moving from a comfortable 66.2°F (19°C) to a moderately hot 75.7°F (24.3°C). The average nighttime temperature lowers to a refreshing 55.9°F (13.3°C) throughout May.Humidity
The average relative humidity in May is 79%.Rainfall
The months with the most rainfall are April and May, with an average 3.15" (80mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Winona, the average length of the day in May is 14h and 10min.On the first day of the month, sunrise is at 6:09 am and sunset at 7:54 pm. On the last day of May, sunrise is at 5:47 am and sunset at 8:19 pm CDT.
Sunshine
The average sunshine in May is 8.8h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.Note: In May, a daily UV index of 6 turns into the following recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
What is the wettest month?
How many days does it rain in May?
When it does not snow?
Does it snow in May?
What is the average length of the day in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
What are the months with the highest UV index?
How high is the UV index in May?
Average temperature in May
Winona, MO
- Average high temperature in May: 75.7°F
The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in May: 55.9°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in May
Winona, MO
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Winona, MO
- Average wind speed in May: 6.8mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.1mph).
Average humidity in May
Winona, MO
- Average humidity in May: 79%
The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (73%).
Average rainfall in May
Winona, MO
- Average rainfall in May: 3.15"
The wettest months (with the highest rainfall) are April and May (3.15").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in May
Winona, MO
- 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 December (7 days).
Average snowfall in May
Winona, MO
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Winona, MO
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Winona, MO
- Average daylight in May: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in May
Winona, MO
- Average sunshine days in May: 12.6 days
The month with the most sunshine days is December (20.5 days).
The months with the least sunshine days are May and June (12.6 days).
Average UV index in May
Winona, MO
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in May
Winona, MO
- Average cloud cover in May: 43
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in May
Winona, MO
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).
Winona, Missouri, USA
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