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
With the onset of May, McHenry sees a temperature rise, with the average high-temperature moving from April's cool 54.3°F (12.4°C) to a refreshing 66.4°F (19.1°C). The average temperature drops to a frosty 49.3°F (9.6°C) during the night in the month of May.Humidity
In McHenry, Illinois, the average relative humidity in May is 79%.Rainfall
In May, in McHenry, the rain falls for 17.8 days. Throughout May, 3.39" (86mm) of precipitation is accumulated. Throughout the year, in McHenry, there are 152.4 rainfall days, and 28.07" (713mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in McHenry. During 0.1 snowfall days, in May, McHenry aggregates 0.08" (2mm) of snow. In McHenry, during the entire year, snow falls for 49 days and aggregates up to 16.5" (419mm) of snow.Daylight
In McHenry, the average length of the day in May is 14h and 37min.On the first day of the month, sunrise is at 5:47 am and sunset at 7:53 pm. On the last day of May, sunrise is at 5:18 am and sunset at 8:22 pm CDT.
Sunshine
The average sunshine in May is 8.5h.UV index
In McHenry, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A typical high UV index of 5 in May suggests the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. To protect against the Sun's most potent rays, avoid direct exposure around midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in McHenry?
What is the average humidity in May in McHenry?
How much does it rain in McHenry in May?
What is the last month it snows in McHenry?
What is the average length of the day in May in McHenry?
When are sunrise and sunset in May in McHenry?
How long on average sun shines in May in McHenry?
What is the UV index intensity in May in McHenry?
Average temperature in May
McHenry, IL
- Average high temperature in May: 66.4°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (26.6°F).
- Average low temperature in May: 49.3°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in May
McHenry, 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
McHenry, IL
- Average wind speed in May: 8.3mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in May
McHenry, IL
- Average humidity in May: 79%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is October (76%).
Average rainfall in May
McHenry, IL
- Average rainfall in May: 3.39"
The wettest month (with the highest rainfall) is June (3.58").
The driest month (with the least rainfall) is December (1.34").
Average rainfall days in May
McHenry, IL
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in May
McHenry, IL
- Average snowfall in May: 0.08"
The month with the highest snowfall is January (5.16").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
McHenry, IL
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
McHenry, 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 6min).
- Average sunshine in May: 8h and 3min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
McHenry, IL
- Average sunshine days in May: 11 days
The month with the most sunshine days is November (16 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in May
McHenry, IL
- Average UV index in May: 5
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
McHenry, IL
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in May
McHenry, IL
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
McHenry, Illinois, USA
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