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 arrival of August coincides with an average high-temperature of a still moderately hot 83.3°F (28.5°C), indicating a minimal shift from July's 84.2°F (29°C). An average nighttime temperature of 64.4°F (18°C) is recorded in Lewistown during August.Heat index
Throughout August, the heat index is computed to be a hot 91.4°F (33°C). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.Heat index data is primarily for areas with shade and subjected to light winds. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Humidity
In August, the average relative humidity is 78%.Rainfall
In Lewistown, in August, during 12.8 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. Throughout the year, there are 130.9 rainfall days, and 26.3" (668mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In August, the average length of the day is 13h and 43min.On the first day of August, sunrise is at 6:06 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 7:39 pm CDT.
Sunshine
In August, the average sunshine is 9.9h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: In August, the maximum UV index of 6 transforms into these recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in August?
What is the average humidity in August in Lewistown?
How much does it rain in August?
When it does not snow?
How many hours of daylight does Lewistown have in August?
When is the sunrise / sunset in August?
How long on average sun shines in August?
What are the months with the highest UV index?
What is the UV index intensity in August in Lewistown?
Average temperature in August
Lewistown, MO
- Average high temperature in August: 83.3°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in August: 64.4°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in August
Lewistown, MO
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in August
Lewistown, MO
- Average wind speed in August: 6.7mph
The windiest months (with the highest average wind speed) are January and February (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).
Average humidity in August
Lewistown, MO
- Average humidity in August: 78%
The months with the highest relative humidity are May, June and July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
Lewistown, MO
- Average rainfall in August: 2.6"
The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in August
Lewistown, MO
- 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 January (4.7 days).
Average snowfall in August
Lewistown, MO
- Average snowfall in August: 0"
The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Lewistown, MO
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Lewistown, MO
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in August: 9h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in August
Lewistown, MO
- Average sunshine days in August: 16.6 days
The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is June (12 days).
Average UV index in August
Lewistown, MO
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Lewistown, MO
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in August
Lewistown, MO
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Lewistown, Missouri, USA
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