May weather forecastStreator, IL
May
Weather in May
The last month of the spring, May, is an agreeable month in Streator, Illinois, with an average temperature ranging between min 54°F (12.2°C) and max 71.1°F (21.7°C).Temperature
May's onset witnesses a shift in the average high-temperature, moving from a mild 59.4°F (15.2°C) in April to a pleasant 71.1°F (21.7°C). During May, Streator experiences a consistent low-temperature average of 54°F (12.2°C).Humidity
In May, the average relative humidity is 76%.Rainfall
The month with the most rainfall is May, when the rain falls for 17.1 days and typically aggregates up to 3.39" (86mm) of precipitation.Snowfall
In Streator, snow does not fall in May through September.Daylight
In Streator, the average length of the day in May is 14h and 30min.On the first day of May, sunrise is at 5:51 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:25 am and sunset at 8:21 pm CDT.
Sunshine
In May, the average sunshine is 8.9h.UV index
In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: In May, a daily maximum UV index of 5 leads to the following instructions:
Heed the precautions - Suggestions to avoid sunburn are made. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Streator, IL
- Average high temperature in May: 71.1°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.5°F).
- Average low temperature in May: 54°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in May
Streator, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Streator, IL
- Average wind speed in May: 8.8mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in May
Streator, IL
- Average humidity in May: 76%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in May
Streator, IL
- Average rainfall in May: 3.39"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (1.18").
Average rainfall days in May
Streator, IL
- Average rainfall days in May: 17.1 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in May
Streator, IL
- Average snowfall in May: 0"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Streator, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (11.8 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
Streator, IL
- Average daylight in May: 14h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 54min
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
Streator, IL
- Average sunshine days in May: 11.8 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (9.2 days).
Average UV index in May
Streator, 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 and December (UV index 1).
Average cloud cover in May
Streator, IL
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in May
Streator, 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).
