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
May witnesses an increase in the average high-temperature, moving from a refreshing 60.8°F (16°C) in April to a pleasant 71.1°F (21.7°C). Keithsburg reports an average nighttime low-temperature of 54.1°F (12.3°C) in May.Humidity
In Keithsburg, the average relative humidity in May is 78%.Rainfall
The month with the most rainfall in Keithsburg is May, when the rain falls for 19.9 days and typically aggregates up to 4.57" (116mm) of precipitation.Snowfall
In Keithsburg, snow does not fall in May through September.Daylight
In Keithsburg, the average length of the day in May is 14h and 30min.On the first day of May in Keithsburg, Illinois, sunrise is at 6:00 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:29 pm CDT.
Sunshine
In Keithsburg, the average sunshine in May is 8.7h.UV index
In May, the average daily maximum UV index in Keithsburg, Illinois, is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: During May, 5 as the daily maximum UV index converts into the following advice:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Keithsburg in May?
What is the average humidity in May in Keithsburg?
What is the rainiest month in Keithsburg?
How much does it rain in Keithsburg in May?
When it does not snow in Keithsburg?
Does it snow in Keithsburg in May?
What is the average length of the day in May in Keithsburg?
What time are sunrise and sunset in May in Keithsburg?
How long on average sun shines in May in Keithsburg?
What is the UV index intensity in May in Keithsburg?
Average temperature in May
Keithsburg, IL
- Average high temperature in May: 71.1°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in May: 54.1°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in May
Keithsburg, IL
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in May
Keithsburg, IL
- Average wind speed in May: 8.9mph
The windiest months (with the highest average wind speed) are January and April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in May
Keithsburg, IL
- Average humidity in May: 78%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Keithsburg, IL
- Average rainfall in May: 4.57"
The wettest month (with the highest rainfall) is May (4.57").
The driest months (with the least rainfall) are January and December (1.46").
Average rainfall days in May
Keithsburg, IL
- Average rainfall days in May: 19.9 days
The month with the highest number of rainy days is May (19.9 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in May
Keithsburg, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (4.06").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Keithsburg, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (10.8 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
Keithsburg, IL
- Average daylight in May: 14h and 3min
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 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in May
Keithsburg, IL
- Average sunshine days in May: 8.8 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in May
Keithsburg, IL
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Keithsburg, IL
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in May
Keithsburg, 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).
Keithsburg, Illinois, USA
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