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 arrival of May brings a change in Colchester's weather, with average high-temperatures moving from April's refreshing 61.3°F (16.3°C) to an agreeable 71.6°F (22°C). Colchester experiences a nighttime temperature average of 54.9°F (12.7°C) during May.Humidity
In Colchester, the average relative humidity in May is 79%.Rainfall
The month with the most rainfall in Colchester, Illinois, is May, when the rain falls for 12.3 days and typically aggregates up to 1.1" (28mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In May, the average length of the day is 14h and 26min.On the first day of May, sunrise is at 6:01 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:26 pm CDT.
Sunshine
The average sunshine in May in Colchester is 9h.UV index
In May, the average daily maximum UV index in Colchester is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: An average UV index of 5 in May transforms into this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
What are May temperatures in Colchester?
What is the average humidity in May in Colchester?
What is the wettest month in Colchester?
How much does it rain in Colchester in May?
When it does not snow in Colchester?
Does it snow in Colchester in May?
What is the average length of the day in May in Colchester?
What time are sunrise and sunset in May in Colchester?
How many hours of sunshine does Colchester have in May?
What is the UV index intensity in May in Colchester?
Average temperature in May
Colchester, IL
- Average high temperature in May: 71.6°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in May: 54.9°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in May
Colchester, IL
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in May
Colchester, IL
- Average wind speed in May: 8.7mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in May
Colchester, IL
- Average humidity in May: 79%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Colchester, IL
- Average rainfall in May: 1.1"
The wettest month (with the highest rainfall) is May (1.1").
The driest month (with the least rainfall) is December (0.35").
Average rainfall days in May
Colchester, IL
- Average rainfall days in May: 12.3 days
The month with the highest number of rainy days is May (12.3 days).
The month with the least rainy days is January (3.3 days).
Average snowfall in May
Colchester, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.67").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Colchester, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (6.3 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
Colchester, IL
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 9h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in May
Colchester, IL
- Average sunshine days in May: 14.8 days
The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is June (13.9 days).
Average UV index in May
Colchester, 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
Colchester, IL
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in May
Colchester, 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).
Colchester, Illinois, USA
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