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
May's arrival is marked by an increase in the average high-temperature, moving from a mild 57°F (13.9°C) in April to a pleasant 69.1°F (20.6°C). Big Rock experiences a mean low-temperature of 51.8°F (11°C) during May.Humidity
In May, the average relative humidity is 78%.Rainfall
The month with the most rainfall is May, when the rain falls for 18 days and typically aggregates up to 4.33" (110mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Big Rock. During 0.2 snowfall days, in May, Big Rock aggregates 0.04" (1mm) of snow. In Big Rock, during the entire year, snow falls for 44.6 days and aggregates up to 15.2" (386mm) of snow.Daylight
In Big Rock, the average length of the day in May is 14h and 34min.On the first day of May in Big Rock, sunrise is at 5:49 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:21 am and sunset at 8:22 pm CDT.
Sunshine
In May, the average sunshine is 8.5h.UV index
In Big Rock, Illinois, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index, 5 during May, leads to the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. When the Sun is at its strongest around midday, find shade and limit exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Frequently asked questions
What are the temperatures in Big Rock in May?
What is the average humidity in May in Big Rock?
What is the rainiest month in Big Rock?
How much does it rain in Big Rock in May?
What is the last month it snows in Big Rock?
What is the average length of the day in May in Big Rock?
When is the sunrise / sunset in May in Big Rock?
How long on average sun shines in May in Big Rock?
What is the UV index intensity in May in Big Rock?
Average temperature in May
Big Rock, IL
- Average high temperature in May: 69.1°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in May: 51.8°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in May
Big Rock, 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
Big Rock, IL
- Average wind speed in May: 8.3mph
The windiest months (with the highest average wind speed) are January, February and April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in May
Big Rock, IL
- Average humidity in May: 78%
The months with the highest relative humidity are January, July and August (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in May
Big Rock, IL
- Average rainfall in May: 4.33"
The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is December (1.57").
Average rainfall days in May
Big Rock, IL
- Average rainfall days in May: 18 days
The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is February (6 days).
Average snowfall in May
Big Rock, IL
- Average snowfall in May: 0.04"
The month with the highest snowfall is January (4.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Big Rock, IL
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Big Rock, IL
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 3min
The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Big Rock, IL
- Average sunshine days in May: 11.5 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is April (10.3 days).
Average UV index in May
Big Rock, IL
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Big Rock, IL
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in May
Big Rock, IL
- 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).
Big Rock, Illinois, USA
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