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
Riverton in May shows a temperature shift, moving from an average high of a comfortable 63.1°F (17.3°C) in April to an agreeable 72.9°F (22.7°C). The low-temperature in Riverton averages to a mild 56.5°F (13.6°C) during the nights of May.Humidity
The average relative humidity in May in Riverton is 77%.Rainfall
In May, in Riverton, Illinois, the rain falls for 17 days. Throughout May, 2.09" (53mm) of precipitation is accumulated. Throughout the year, in Riverton, Illinois, there are 131.5 rainfall days, and 18.54" (471mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in May in Riverton is 14h and 23min.On the first day of May in Riverton, sunrise is at 5:57 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:20 pm CDT.
Sunshine
In Riverton, the average sunshine in May is 9.3h.UV index
The average daily maximum UV index in May in Riverton is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In May, a daily UV index of 5 turns into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Experience reduced UV exposure by about half when donning a wide-brim hat.
Frequently asked questions
What are May temperatures in Riverton?
What is the average humidity in May in Riverton?
How much does it rain in Riverton in May?
When it does not snow in Riverton?
Does it snow in Riverton in May?
How many hours of daylight does Riverton have in May?
When are sunrise and sunset in May in Riverton?
How long on average sun shines in May in Riverton?
How high is the UV index in May in Riverton?
Average temperature in May
Riverton, IL
- Average high temperature in May: 72.9°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in May: 56.5°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in May
Riverton, IL
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Riverton, IL
- Average wind speed in May: 8.6mph
The windiest months (with the highest average wind speed) are January and April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in May
Riverton, IL
- Average humidity in May: 77%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Riverton, IL
- Average rainfall in May: 2.09"
The wettest month (with the highest rainfall) is June (2.36").
The driest month (with the least rainfall) is December (0.83").
Average rainfall days in May
Riverton, IL
- Average rainfall days in May: 17 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in May
Riverton, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (1.81").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Riverton, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (8 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
Riverton, IL
- Average daylight in May: 14h and 2min
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 24min).
- Average sunshine in May: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in May
Riverton, IL
- Average sunshine days in May: 11.5 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in May
Riverton, 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, February, November and December (UV index 2).
Average cloud cover in May
Riverton, IL
- Average cloud cover in May: 38
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are June, August and September (Cloud cover 30).
Average visibility in May
Riverton, 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).
Riverton, Illinois, USA
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