August weather forecast
Lewiston, MI

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Weather in August

August, the last month of the summer in Lewiston, is also a moderately hot month, with temperature in the range of an average low of 56.5°F (13.6°C) and an average high of 76.5°F (24.7°C).

Temperature

Lewiston experiences an average high-temperature of a still moderately hot 76.5°F (24.7°C) in August, subtly different from July's 78.1°F (25.6°C). The temperature dips to an average of 56.5°F (13.6°C) during August nights.

Humidity

The average relative humidity in August is 78%.

Rainfall

In Lewiston, Michigan, in August, it is raining for 15.8 days, with typically 1.69" (43mm) of accumulated precipitation. In Lewiston, during the entire year, the rain falls for 140.1 days and collects up to 23.39" (594mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In August, the average length of the day is 14h and 1min.
On the first day of the month, sunrise is at 6:23 am and sunset at 9:03 pm. On the last day of August, in Lewiston, sunrise is at 6:59 am and sunset at 8:15 pm EDT.

Sunshine

In Lewiston, the average sunshine in August is 9.5h.

UV index

June through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 5 in August interprets into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Updated: Jul 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in August?

August temperatures vary between a high-temperature of 76.5°F (24.7°C) and a low-temperature of 56.5°F (13.6°C).

What is the average humidity in August?

In August, the average relative humidity is 78%.

How many days does it rain in August?

In Lewiston, in August, during 15.8 rainfall days, 1.69" (43mm) of precipitation is typically accumulated.

When it does not snow?

June through September are months without snowfall.

How many hours of daylight does Lewiston have in August?

In Lewiston, the average day length in August is 14h and 1min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:23 am and sunset at 9:03 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 8:15 pm EDT.

How long on average sun shines in August?

In August, the average sunshine duration is 9.5h.

What is the month with the highest UV index?

The months with the highest UV index are June through August, with an average maximum UV index of 5.

What is the UV index reading in August?

In August, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
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
Lewiston, MI

Average temperature in August - Lewiston, MI
  • Average high temperature in August: 76.5°F

The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (23.5°F).

  • Average low temperature in August: 56.5°F

The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is February (14.4°F).

Average pressure in August
Lewiston, MI

Average pressure in August - Lewiston, MI
  • Average pressure in August: 29.95"Hg

The month with the highest atmospheric pressure is March (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in August
Lewiston, MI

Average wind speed in August - Lewiston, MI
  • Average wind speed in August: 6.2mph

The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

Average humidity in August
Lewiston, MI

Average humidity in August - Lewiston, MI
  • Average humidity in August: 78%

The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (70%).

Average rainfall in August
Lewiston, MI

Average rainfall in August - Lewiston, MI
  • Average rainfall in August: 1.69"

The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is September (1.3").

Average rainfall days in August
Lewiston, MI

Average rainfall days in August - Lewiston, MI
  • Average rainfall days in August: 15.8 days

The month with the highest number of rainy days is October (17.5 days).
The months with the least rainy days are January and February (5 days).

Average snowfall in August
Lewiston, MI

Average snowfall in August - Lewiston, MI
  • Average snowfall in August: 0"

The month with the highest snowfall is January (10.94").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Lewiston, MI

Average snowfall days in August - Lewiston, MI
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (24.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Lewiston, MI

Average daylight in August / Average sunshine in August - Lewiston, MI
  • Average daylight in August: 14h and 0min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in August: 9h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 1h and 42min).

Average sunshine days in August
Lewiston, MI

Average sunshine days in August - Lewiston, MI
  • Average sunshine days in August: 12 days

The month with the most sunshine days is September (14.6 days).
The month with the least sunshine days is February (5.4 days).

Average UV index in August
Lewiston, MI

Average UV index in August - Lewiston, MI
  • Average UV index in August: 5

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

Average cloud cover in August
Lewiston, MI

Average cloud cover in August - Lewiston, MI
  • Average cloud cover in August: 38

The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 34).

Average visibility in August
Lewiston, MI

Average visibility in August - Lewiston, MI
  • Average visibility in August: 5mi

The months with the highest visibility are May and June (6mi).
The months with the lowest visibility are January, February, March and December (4mi).

Lewiston, Michigan, USA

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