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
In Northfield, stepping into May brings a temperature increase, moving up from April's cool 52°F (11.1°C) to a refreshing 62.8°F (17.1°C). Northfield's average low-temperature during May nights is observed to be a fresh 50.4°F (10.2°C).Humidity
In Northfield, the average relative humidity in May is 77%.Rainfall
The wettest months in Northfield are May and June, with an average 4.57" (116mm) of rainfall.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Northfield aggregates 0.08" (2mm) of snow. Throughout the year, there are 47.6 snowfall days, and 17.8" (452mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 35min.On the first day of May, sunrise is at 5:45 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 5:17 am and sunset at 8:20 pm CDT.
Sunshine
The average sunshine in May is 8.7h.UV index
In Northfield, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: An average maximum UV index of 5 in May leads to these recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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?
What is the wettest month?
How much does it rain in May?
What is the last month it snows?
How many hours of daylight does Northfield have in May?
When are sunrise and sunset in May?
How many hours of sunshine does Northfield have in May?
What is the UV index reading in May?
Average temperature in May
Northfield, IL
- Average high temperature in May: 62.8°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in May: 50.4°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in May
Northfield, 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
Northfield, IL
- Average wind speed in May: 8.9mph
The windiest month (with the highest average wind speed) is January (11.5mph).
The calmest month (with the lowest average wind speed) is August (7.1mph).
Average humidity in May
Northfield, IL
- Average humidity in May: 77%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in May
Northfield, IL
- Average rainfall in May: 4.57"
The wettest months (with the highest rainfall) are May and June (4.57").
The driest month (with the least rainfall) is December (1.65").
Average rainfall days in May
Northfield, IL
- Average rainfall days in May: 19.1 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (6.1 days).
Average snowfall in May
Northfield, IL
- Average snowfall in May: 0.08"
The month with the highest snowfall is January (4.84").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Northfield, IL
- Average snowfall days in May: 0.1 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
Northfield, 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 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Northfield, IL
- Average sunshine days in May: 10 days
The month with the most sunshine days is November (15.5 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in May
Northfield, IL
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Northfield, IL
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in May
Northfield, IL
- 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).
Northfield, Illinois, USA
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