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
On the advent of August, Saint Johns's average high-temperature exhibits a minor adjustment to a still warm 81.3°F (27.4°C) from July's 82.8°F (28.2°C). During the nights in August, Saint Johns observes an average low-temperature of 61.3°F (16.3°C).Heat index
Throughout August, the heat index is appraised at 80.6°F (27°C). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.Always consider that heat index estimations are for light winds and places in the shade. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Humidity
August is the least humid month in Saint Johns, with an average relative humidity of 40%.Rainfall
In Saint Johns, during August, the rain falls for 8 days and regularly aggregates up to 0.59" (15mm) of precipitation. Throughout the year, there are 98.7 rainfall days, and 8.23" (209mm) of precipitation is accumulated.Snowfall
June through August are months without snowfall in Saint Johns.Daylight
The average length of the day in August is 14h and 18min.On the first day of August, sunrise is at 5:54 am and sunset at 8:57 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 8:03 pm MDT.
Sunshine
In August, the average sunshine in Saint Johns, Montana, is 11.6h.UV index
In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 5 during August leads to these advisories:
Act with care - The suggestion to avoid sunburn is emphasized. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
What are the temperatures in Saint Johns in August?
What is the least humid month in Saint Johns?
What is the average humidity in August in Saint Johns?
How much does it rain in Saint Johns in August?
When it does not snow in Saint Johns?
Does it snow in Saint Johns in August?
What is the average length of the day in August in Saint Johns?
What time are sunrise and sunset in August in Saint Johns?
How many hours of sunshine does Saint Johns have in August?
What is the UV index intensity in August in Saint Johns?
Average temperature in August
Saint Johns, MT
- Average high temperature in August: 81.3°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The months with the lowest average high temperature are January and December (27.1°F).
- Average low temperature in August: 61.3°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).
Average pressure in August
Saint Johns, MT
- Average pressure in August: 29.88"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in August
Saint Johns, MT
- Average wind speed in August: 8.5mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in August
Saint Johns, MT
- Average humidity in August: 40%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (40%).
Average rainfall in August
Saint Johns, MT
- Average rainfall in August: 0.59"
The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is December (0.31").
Average rainfall days in August
Saint Johns, MT
- Average rainfall days in August: 8 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (4 days).
Average snowfall in August
Saint Johns, MT
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Saint Johns, MT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Saint Johns, MT
- Average daylight in August: 14h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in August: 11h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in August
Saint Johns, MT
- Average sunshine days in August: 18.7 days
The month with the most sunshine days is September (20.3 days).
The month with the least sunshine days is April (12.8 days).
Average UV index in August
Saint Johns, MT
- Average UV index in August: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in August
Saint Johns, MT
- Average cloud cover in August: 16
The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 16).
Average visibility in August
Saint Johns, 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).
Saint Johns, Montana, USA
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