Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
Shifting into August, Princeton records an average high-temperature of a still warm 79.5°F (26.4°C), presenting minor fluctuations compared to the previous month. In August, Princeton reports a consistent average low-temperature of 62.1°F (16.7°C) during the nights.Humidity
In August, the average relative humidity is 83%.Rainfall
In August, in Princeton, the rain falls for 12.8 days. Throughout August, 1.5" (38mm) of precipitation is accumulated. In Princeton, during the entire year, the rain falls for 130 days and collects up to 17.64" (448mm) of precipitation.Snowfall
In Princeton, Illinois, snow does not fall in May through September.Daylight
In August, the average length of the day is 13h and 47min.On the first day of August in Princeton, Illinois, sunrise is at 5:53 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:31 pm CDT.
Sunshine
In August, the average sunshine in Princeton is 9.6h.UV index
In Princeton, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The daily maximum UV index of 5 in August interprets into the following advice:
Undertake precautions - Guarding against sun damage is counselled. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Frequently asked questions
What is the usual temperature for Princeton in August?
What is the average humidity in August in Princeton?
How much does it rain in Princeton in August?
When it does not snow in Princeton?
What is the average length of the day in August in Princeton?
When is the sunrise / sunset in August in Princeton?
How many hours of sunshine does Princeton have in August?
What is the UV index intensity in August in Princeton?
Average temperature in August
Princeton, IL
- Average high temperature in August: 79.5°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 August: 62.1°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 August
Princeton, IL
- Average pressure in August: 29.97"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 August
Princeton, IL
- Average wind speed in August: 6.4mph
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 August
Princeton, IL
- Average humidity in August: 83%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Princeton, IL
- Average rainfall in August: 1.5"
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 August
Princeton, IL
- Average rainfall days in August: 12.8 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 August
Princeton, IL
- Average snowfall in August: 0"
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 August
Princeton, IL
- Average snowfall days in August: 0 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 August /
Average sunshine in August
Princeton, IL
- Average daylight in August: 13h and 5min
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 August: 9h and 4min
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 August
Princeton, IL
- Average sunshine days in August: 15.4 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 August
Princeton, IL
- Average UV index in August: 5
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 August
Princeton, IL
- Average cloud cover in August: 33
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 August
Princeton, IL
- Average visibility in August: 5mi
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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