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
The transition into August shows a subtle variation to a still warm 79.5°F (26.4°C) from July's 80.6°F (27°C) in the average high-temperature. Dover experiences a mean temperature of 62.1°F (16.7°C) during August nights.Humidity
The average relative humidity in August is 83%.Rainfall
In August, the rain falls for 12.8 days. Throughout August, 1.5" (38mm) of precipitation is accumulated. In Dover, during the entire year, the rain falls for 130 days and collects up to 17.64" (448mm) of precipitation.Snowfall
In Dover, snow does not fall in May through September.Daylight
The average length of the day in August in Dover is 13h and 47min.On the first day of the month, sunrise is at 5:53 am and sunset at 8:14 pm. On the last day of August, in Dover, sunrise is at 6:23 am and sunset at 7:31 pm CDT.
Sunshine
The average sunshine in August in Dover is 9.6h.UV index
The average daily maximum UV index in August in Dover, Illinois, is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 5 in August leads to these recommendations:
Act with care - The need to guard against sun damage is communicated. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Frequently asked questions
What is the average August temperature in Dover?
What is the average humidity in August in Dover?
How much does it rain in Dover in August?
When it does not snow in Dover?
How many hours of daylight does Dover have in August?
When is the sunrise / sunset in August in Dover?
How long on average sun shines in August in Dover?
How high is the UV index in August in Dover?
Average temperature in August
Dover, 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
Dover, 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
Dover, 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
Dover, 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
Dover, 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
Dover, 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
Dover, 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
Dover, 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
Dover, 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
Dover, 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
Dover, 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
Dover, 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
Dover, 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).
Dover, Illinois, USA
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