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, Roberts's average high-temperature sees a rise, moving from April's moderate 60.4°F (15.8°C) to an agreeable 71.8°F (22.1°C). Nighttime temperature dips to a mean of 55.4°F (13°C) during May.Humidity
In Roberts, the average relative humidity in May is 77%.Rainfall
May is the month with the most rainfall in Roberts, Illinois. Rain falls for 17.4 days and accumulates 2.91" (74mm) of precipitation.Snowfall
In Roberts, Illinois, snow does not fall in May through October.Daylight
In Roberts, the average length of the day in May is 14h and 28min.On the first day of the month, sunrise is at 5:50 am and sunset at 7:49 pm. On the last day of May, in Roberts, Illinois, sunrise is at 5:24 am and sunset at 8:17 pm CDT.
Sunshine
In May, the average sunshine in Roberts is 8.8h.UV index
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 ordinary individuals.Note: In May, a daily maximum UV index of 5 leads to the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Roberts?
What is the average humidity in May in Roberts?
What is the rainiest month in Roberts?
How much does it rain in Roberts in May?
When it does not snow in Roberts?
Does it snow in Roberts in May?
How many hours of daylight does Roberts have in May?
What time are sunrise and sunset in May in Roberts?
How many hours of sunshine does Roberts have in May?
How high is the UV index in May in Roberts?
Average temperature in May
Roberts, IL
- Average high temperature in May: 71.8°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in May: 55.4°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in May
Roberts, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Roberts, IL
- Average wind speed in May: 9mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in May
Roberts, IL
- Average humidity in May: 77%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Roberts, IL
- Average rainfall in May: 2.91"
The wettest month (with the highest rainfall) is May (2.91").
The driest months (with the least rainfall) are February and December (1.14").
Average rainfall days in May
Roberts, IL
- Average rainfall days in May: 17.4 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in May
Roberts, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.83").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Roberts, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Roberts, IL
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Roberts, IL
- Average sunshine days in May: 11.3 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in May
Roberts, IL
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Roberts, IL
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility in May
Roberts, IL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Roberts, Illinois, USA
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