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
The shift into May is accompanied by a temperature increase, with the average high-temperature rising from a refreshing 64.2°F (17.9°C) in April to a warm 73.9°F (23.3°C). During May, Dow's temperature averages to a mild 56.7°F (13.7°C) at night.Humidity
In May, the average relative humidity is 79%.Rainfall
In Dow, in May, it is raining for 16.5 days, with typically 2.68" (68mm) of accumulated precipitation. In Dow, during the entire year, the rain falls for 136.5 days and collects up to 23.11" (587mm) of precipitation.Snowfall
In Dow, snow does not fall in April through October.Daylight
The average length of the day in May is 14h and 20min.On the first day of May, sunrise is at 6:02 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:20 pm CDT.
Sunshine
In Dow, Illinois, the average sunshine in May is 9.3h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: A daily maximum UV index of 6 in May translates into the following instructions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Dow in May?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
How many hours of daylight does Dow have in May?
When are sunrise and sunset in May?
How many hours of sunshine does Dow have in May?
What is the month with the highest UV index in Dow?
What is the UV index reading in May?
Average temperature in May
Dow, IL
- Average high temperature in May: 73.9°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in May: 56.7°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in May
Dow, 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 (29.92"Hg).
Average wind speed in May
Dow, IL
- Average wind speed in May: 7.6mph
The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in May
Dow, IL
- Average humidity in May: 79%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Dow, IL
- Average rainfall in May: 2.68"
The wettest month (with the highest rainfall) is June (3.07").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in May
Dow, IL
- Average rainfall days in May: 16.5 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in May
Dow, IL
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Dow, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (6.2 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
Dow, IL
- Average daylight in May: 14h and 2min
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 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 30min).
Average sunshine days in May
Dow, IL
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is January (20.3 days).
The months with the least sunshine days are May and June (12.3 days).
Average UV index in May
Dow, 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, November and December (UV index 2).
Average cloud cover in May
Dow, IL
- Average cloud cover in May: 38
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are August and September (Cloud cover 28).
Average visibility in May
Dow, 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).
Dow, Illinois, USA
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