August weather forecastFort Smith, MT
August
Weather in August
August, the last month of the summer in Fort Smith, is another warm month, with an average temperature varying between 58.5°F (14.7°C) and 81.3°F (27.4°C).Temperature
Fort Smith sees the arrival of August with an average high-temperature of a still moderately hot 81.3°F (27.4°C), indicating a subtle variation from July. Contrasting the daytime warmth, Fort Smith's August nights cool down to an average of 58.5°F (14.7°C).Heat index
The heat index value during August is estimated at 80.6°F (27°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.For clarity, heat index numbers account for light winds and areas under shade. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Humidity
August is the least humid month in Fort Smith, with an average relative humidity of 41%.Rainfall
In Fort Smith, in August, during 11 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. In Fort Smith, during the entire year, the rain falls for 128.8 days and collects up to 12.64" (321mm) of precipitation.Snowfall
June through August are months without snowfall in Fort Smith.Daylight
In Fort Smith, the average length of the day in August is 14h and 2min.On the first day of August, sunrise is at 5:57 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:33 am and sunset at 7:50 pm MDT.
Sunshine
The average sunshine in August is 11.7h.UV index
The months with the highest UV index in Fort Smith 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 unsafe exposure to UV radiation for ordinary individuals.Note: In August, the UV index of 6 transforms into the following advice:
Resist overexposure. Safeguarding from solar damage is indispensable. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Fort Smith, MT
- Average high temperature in August: 81.3°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in August: 58.5°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is February (16.5°F).
Average pressure in August
Fort Smith, MT
- Average pressure in August: 29.91"Hg
The months with the highest atmospheric pressure are January and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in August
Fort Smith, MT
- Average wind speed in August: 6.3mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in August
Fort Smith, MT
- Average humidity in August: 41%
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (41%).
Average rainfall in August
Fort Smith, MT
- Average rainfall in August: 0.83"
The wettest month (with the highest rainfall) is May (2.01").
The driest month (with the least rainfall) is December (0.59").
Average rainfall days in August
Fort Smith, MT
- Average rainfall days in August: 11 days
The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and December (6.3 days).
Average snowfall in August
Fort Smith, MT
- Average snowfall in August: 0"
The month with the highest snowfall is February (6.85").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Fort Smith, MT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (14.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Fort Smith, MT
- Average daylight in August: 14h and 0min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in August: 11h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).
Average sunshine days in August
Fort Smith, MT
- Average sunshine days in August: 13.1 days
The month with the most sunshine days is October (16.7 days).
The month with the least sunshine days is May (8.7 days).
Average UV index in August
Fort Smith, MT
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in August
Fort Smith, MT
- Average cloud cover in August: 15
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 14).
Average visibility in August
Fort Smith, MT
- 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).
