May weather forecastLamb, IL
May
Weather in May
The last month of the spring, May, is a moderately hot month in Lamb, Illinois, with an average temperature varying between 75.2°F (24°C) and 58.3°F (14.6°C).Temperature
As Lamb transitions into May, the average high-temperature is observed to slightly rise from a refreshing 66.6°F (19.2°C) in April to a moderately hot 75.2°F (24°C). During the month of May, Lamb's nighttime temperature lowers to an average of 58.3°F (14.6°C).Humidity
The most humid month in Lamb is May, with an average relative humidity of 80%.Rainfall
In Lamb, in May, during 14.7 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. In Lamb, during the entire year, the rain falls for 136.4 days and collects up to 20" (508mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In May, the average length of the day is 14h and 13min.On the first day of the month, sunrise is at 5:56 am and sunset at 7:42 pm. On the last day of May, sunrise is at 5:32 am and sunset at 8:07 pm CDT.
Sunshine
The average sunshine in May is 9.2h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: In May, a daily maximum UV index of 6 leads to the following instructions:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Lamb, IL
- Average high temperature in May: 75.2°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in May: 58.3°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).
Average pressure in May
Lamb, IL
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Lamb, IL
- Average wind speed in May: 8.1mph
The windiest month (with the highest average wind speed) is February (9.9mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in May
Lamb, IL
- Average humidity in May: 80%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Lamb, IL
- Average rainfall in May: 1.93"
The wettest month (with the highest rainfall) is April (2.2").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in May
Lamb, IL
- Average rainfall days in May: 14.7 days
The month with the highest number of rainy days is July (14.8 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in May
Lamb, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.79").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Lamb, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.4 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
Lamb, IL
- Average daylight in May: 14h and 12min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in May: 9h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in May
Lamb, IL
- Average sunshine days in May: 13.2 days
The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is July (13.1 days).
Average UV index in May
Lamb, IL
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in May
Lamb, IL
- Average cloud cover in May: 38
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in May
Lamb, 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).





