Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
With the onset of April, Princeton's weather sees a temperature rise, transitioning from a frosty 46.8°F (8.2°C) in March to a moderate 58.6°F (14.8°C). During the nights in April, Princeton experiences a consistent average temperature of 42.4°F (5.8°C).Humidity
In Princeton, the average relative humidity in April is 74%.Rainfall
In Princeton, Illinois, in April, it is raining for 14.7 days, with typically 2.09" (53mm) of accumulated precipitation. In Princeton, Illinois, during the entire year, the rain falls for 130 days and collects up to 17.64" (448mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows. During 0.8 snowfall days, in April, Princeton aggregates 0.55" (14mm) of snow. In Princeton, during the entire year, snow falls for 33.4 days and aggregates up to 7.05" (179mm) of snow.Daylight
In April, the average length of the day in Princeton, Illinois, is 13h and 22min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:23 pm. On the last day of April, in Princeton, sunrise is at 5:55 am and sunset at 7:54 pm CDT.
Sunshine
In Princeton, the average sunshine in April is 7.8h.UV index
In April, the average daily maximum UV index in Princeton is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 3 in April translates into this advice:
Make use of precautions - Suggestions to resist sunburn are communicated. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
What is the temperature in April in Princeton?
What is the average humidity in April in Princeton?
How many days does it rain in April in Princeton?
What is the last month it snows in Princeton?
What is the average length of the day in April in Princeton?
When is the sunrise / sunset in April in Princeton?
How many hours of sunshine does Princeton have in April?
How high is the UV index in April in Princeton?
Average temperature in April
Princeton, IL
- Average high temperature in April: 58.6°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in April: 42.4°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in April
Princeton, IL
- Average pressure in April: 29.94"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in April
Princeton, IL
- Average wind speed in April: 10.5mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in April
Princeton, IL
- Average humidity in April: 74%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in April
Princeton, IL
- Average rainfall in April: 2.09"
The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in April
Princeton, IL
- Average rainfall days in April: 14.7 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.5 days).
Average snowfall in April
Princeton, IL
- Average snowfall in April: 0.55"
The month with the highest snowfall is January (2.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Princeton, IL
- Average snowfall days in April: 0.8 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Princeton, IL
- Average daylight in April: 13h and 2min
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 12min).
- Average sunshine in April: 7h and 5min
The months with the most sunshine are June and July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in April
Princeton, IL
- Average sunshine days in April: 13.4 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in April
Princeton, IL
- Average UV index in April: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Princeton, IL
- Average cloud cover in April: 48
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in April
Princeton, IL
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Princeton, Illinois, USA
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