May weather forecastHerrick, IL
May
Weather in May
The last month of the spring, May, is a moderately hot month in Herrick, Illinois, with an average temperature varying between 73.4°F (23°C) and 57°F (13.9°C).Temperature
As May arrives, Herrick's weather shows an increase in high-temperatures, moving from April's enjoyable 63.5°F (17.5°C) to a moderately hot 73.4°F (23°C). Herrick witnesses an average low-temperature of 57°F (13.9°C) throughout the month of May.Humidity
In May, the average relative humidity in Herrick, Illinois, is 80%.Rainfall
In Herrick, Illinois, in May, it is raining for 15.7 days, with typically 2.56" (65mm) of accumulated precipitation. In Herrick, during the entire year, the rain falls for 139.3 days and collects up to 23.94" (608mm) of precipitation.Snowfall
In Herrick, snow does not fall in May through October.Daylight
In Herrick, the average length of the day in May is 14h and 20min.On the first day of the month, sunrise is at 5:56 am and sunset at 7:49 pm. On the last day of May, in Herrick, Illinois, sunrise is at 5:31 am and sunset at 8:16 pm CDT.
Sunshine
In Herrick, Illinois, the average sunshine in May is 9h.UV index
In May, the average daily maximum UV index in Herrick is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 5 during May leads to these instructions:
Heed the precautions - Suggestions to avoid sunburn are made. It's recommended to limit sun exposure when its radiation is at its peak during midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Herrick, IL
- Average high temperature in May: 73.4°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in May: 57°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 (23.4°F).
Average pressure in May
Herrick, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Herrick, IL
- Average wind speed in May: 8.2mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in May
Herrick, IL
- Average humidity in May: 80%
The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Herrick, IL
- Average rainfall in May: 2.56"
The wettest months (with the highest rainfall) are April and June (2.95").
The driest month (with the least rainfall) is February (1.18").
Average rainfall days in May
Herrick, IL
- Average rainfall days in May: 15.7 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in May
Herrick, IL
- Average snowfall in May: 0"
The month with the highest snowfall is December (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Herrick, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (5.7 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
Herrick, IL
- Average daylight in May: 14h and 18min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 9h and 0min
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 18min).
Average sunshine days in May
Herrick, IL
- Average sunshine days in May: 12.3 days
The months with the most sunshine days are January and November (19.5 days).
The months with the least sunshine days are May and July (12.3 days).
Average UV index in May
Herrick, 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
Herrick, IL
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and July (Cloud cover 29).
Average visibility in May
Herrick, 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).
