August weather forecast
Lena, IL

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Weather in August

August in Lena welcomes late-summer weather, featuring high temperatures, ample daylight, and frequent sunshine. The month often retains details of July’s peak summer conditions, with only a slight decrease in average temperatures. Rainfall becomes less frequent, and breezes bring slight relief to the lingering warmth. Despite being a summer month, August sees a slight dip in maximum temperatures to a still toasty 78.1°F (25.6°C). Outdoor enthusiasts can still enjoy nature outings and afternoons by the water, taking advantage of the season's remaining warmth.

Temperature

The introduction of August notes a subtle temperature variation to a still warm 78.1°F (25.6°C) from July's 79.3°F (26.3°C). An average low-temperature of 60.4°F (15.8°C) marks the month of August.

Humidity

In Lena, the average relative humidity in August is 83%.

Rainfall

In Lena, during August, the rain falls for 14.3 days and regularly aggregates up to 1.77" (45mm) of precipitation. In Lena, during the entire year, the rain falls for 145.9 days and collects up to 22.8" (579mm) of precipitation.

Snowfall

In Lena, snow does not fall in May through September.

Daylight

In August, the average length of the day is 13h and 51min.
On the first day of August in Lena, sunrise is at 5:52 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 7:34 pm CDT.

Sunshine

The months with the most sunshine are July and August, with an average of 9.7h of sunshine.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index in Lena. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: In August, the average maximum UV index of 5 translates into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

What is the average August temperature in Lena?

The high-temperature in Lena during August is 78.1°F (25.6°C) and the low-temperature is 60.4°F (15.8°C).

What is the average humidity in August in Lena?

In August, the average relative humidity in Lena is 83%.

How much does it rain in Lena in August?

In Lena, during August, the rain falls for 14.3 days and regularly aggregates up to 1.77" (45mm) of precipitation.

When it does not snow in Lena?

May through September are months without snowfall in Lena, Illinois.

How many hours of daylight does Lena have in August?

In August, the average day length is 13h and 51min.

When are sunrise and sunset in August in Lena?

On the first day of August in Lena, Illinois, sunrise is at 5:52 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 7:34 pm CDT.

What are the months with the most sunshine in Lena?

The months with the most sunshine are July and August, with an average of 9.7h of sunshine.

How long on average sun shines in August in Lena?

In Lena, Illinois, the average sunshine duration in August is 9.7h.

What are the months with the highest UV index in Lena?

May through August, with an average maximum UV index of 5, are months with the highest UV index in Lena.

What is the UV index reading in August in Lena?

The average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Lena, IL

Average temperature in August - Lena, IL
  • Average high temperature in August: 78.1°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (24.8°F).

  • Average low temperature in August: 60.4°F

The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).

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Average pressure in August
Lena, IL

Average pressure in August - Lena, IL
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in August
Lena, IL

Average wind speed in August - Lena, IL
  • Average wind speed in August: 6.6mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average humidity in August
Lena, IL

Average humidity in August - Lena, IL
  • Average humidity in August: 83%

The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (76%).

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Average rainfall in August
Lena, IL

Average rainfall in August - Lena, IL
  • Average rainfall in August: 1.77"

The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is January (1.06").

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Average rainfall days in August
Lena, IL

Average rainfall days in August - Lena, IL
  • Average rainfall days in August: 14.3 days

The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (5.3 days).

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Average snowfall in August
Lena, IL

Average snowfall in August - Lena, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (3.46").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Lena, IL

Average snowfall days in August - Lena, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Lena, IL

Average daylight in August / Average sunshine in August - Lena, IL
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in August: 9h and 4min

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in August
Lena, IL

Average sunshine days in August - Lena, IL
  • Average sunshine days in August: 14.6 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (9.3 days).

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Average UV index in August
Lena, IL

Average UV index in August - Lena, IL
  • Average UV index in August: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in August
Lena, IL

Average cloud cover in August - Lena, IL
  • Average cloud cover in August: 34

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 33).

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Average visibility in August
Lena, IL

Average visibility in August - Lena, IL
  • Average visibility in August: 5mi

The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).

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Lena, Illinois, USA

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