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 start of May is characterized by an increase in the average high-temperature, transitioning from a refreshing 56.7°F (13.7°C) in April to a pleasant 68.7°F (20.4°C). During the month of May, an average low-temperature of 52.3°F (11.3°C) is recorded in Posen.Humidity
In May, the average relative humidity in Posen is 76%.Rainfall
The month with the most rainfall in Posen is May, when the rain falls for 17.4 days and typically aggregates up to 4.17" (106mm) of precipitation.Snowfall
In Posen, snow does not fall in May through September.Daylight
The average length of the day in May in Posen is 14h and 33min.On the first day of the month, sunrise is at 5:46 am and sunset at 7:49 pm. On the last day of May, sunrise is at 5:18 am and sunset at 8:18 pm CDT.
Sunshine
In May, the average sunshine is 8.6h.UV index
The average daily maximum UV index in May in Posen is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 5 in May transforms into the following instructions:
Undertake precautions - Guarding against sun damage is counselled. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Frequently asked questions
What is the average May temperature in Posen?
What is the average humidity in May in Posen?
What is the wettest month in Posen?
How many days does it rain in May in Posen?
When it does not snow in Posen?
Does it snow in Posen in May?
How many hours of daylight does Posen have in May?
When is the sunrise / sunset in May in Posen?
How long on average sun shines in May in Posen?
What is the UV index reading in May in Posen?
Average temperature in May
Posen, IL
- Average high temperature in May: 68.7°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in May: 52.3°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in May
Posen, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Posen, IL
- Average wind speed in May: 8.3mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in May
Posen, IL
- Average humidity in May: 76%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in May
Posen, IL
- Average rainfall in May: 4.17"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days in May
Posen, IL
- Average rainfall days in May: 17.4 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (6.1 days).
Average snowfall in May
Posen, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Posen, IL
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Posen, IL
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in May
Posen, IL
- Average sunshine days in May: 11.8 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is April (10.2 days).
Average UV index in May
Posen, IL
- 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 December (UV index 1).
Average cloud cover in May
Posen, IL
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in May
Posen, IL
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Posen, Illinois, USA
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