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
In Decker, August's average high-temperature stands at a still warm 83.7°F (28.7°C), closely related to the preceding month. August nights experience a distinct temperature drop from the daily highs, with an average low-temperature of 60.4°F (15.8°C).Heat index
The heat index for August is computed to be 82.4°F (28°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.Understand that the heat index values take into account shaded locations and mild winds. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'feels like' or 'apparent temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Humidity
The least humid month in Decker is August, with an average relative humidity of 40%.Rainfall
In Decker, during August, the rain falls for 11.6 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Decker, Montana, during the entire year, the rain falls for 127.6 days and collects up to 14.25" (362mm) of precipitation.Snowfall
June through August are months without snowfall.Daylight
The average length of the day in August is 14h and 1min.On the first day of August, sunrise is at 5:53 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:45 pm MDT.
Sunshine
July and August, with an average of 11.9h of sunshine, are months with the most sunshine.UV index
In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 6 during August translates into these guidelines:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
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 least humid month?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
Does it snow in August?
What is the average length of the day in August?
When is the sunrise / sunset in August?
What is the month with the most sunshine?
How long on average sun shines in August?
What is the UV index intensity in August?
Average temperature in August
Decker, MT
- Average high temperature in August: 83.7°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (31.1°F).
- Average low temperature in August: 60.4°F
The month with the highest average low temperature is July (61.5°F).
The coldest months (with the lowest average low temperature) are January and February (16.2°F).
Average pressure in August
Decker, MT
- Average pressure in August: 29.9"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in August
Decker, MT
- Average wind speed in August: 7mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest months (with the lowest average wind speed) are July and December (6.8mph).
Average humidity in August
Decker, MT
- Average humidity in August: 40%
The months with the highest relative humidity are January and February (79%).
The month with the lowest relative humidity is August (40%).
Average rainfall in August
Decker, MT
- Average rainfall in August: 1.1"
The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in August
Decker, MT
- Average rainfall days in August: 11.6 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in August
Decker, MT
- Average snowfall in August: 0"
The month with the highest snowfall is February (5.2").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Decker, 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
Decker, 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 5min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).
Average sunshine days in August
Decker, MT
- Average sunshine days in August: 14.4 days
The month with the most sunshine days is September (18.2 days).
The month with the least sunshine days is May (9.6 days).
Average UV index in August
Decker, MT
- Average UV index in August: 6
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in August
Decker, MT
- Average cloud cover in August: 14
The month with the most cloud cover is February (Cloud cover 41).
The months with the least cloud cover are July and August (Cloud cover 14).
Average visibility in August
Decker, 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).
Decker, Montana, USA
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