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
Saint Johns, Montana, notes an average high-temperature of a still moderately hot 81.3°F (27.4°C) in August, displaying minor variation from July. An average low-temperature of 61.3°F (16.3°C) is common during the nights of August.Heat index
For August, the heat index is calculated to be 80.6°F (27°C). Constant activity during exposure could result in a state of weariness and possibly heat cramps.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an estimation of the warmth sensation when considering humidity levels. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Humidity
The least humid month in Saint Johns is August, 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
In Saint Johns, snow does not fall in June through August.Daylight
In August, the average length of the day is 14h and 18min.On the first day of the month, sunrise is at 5:54 am and sunset at 8:57 pm. On the last day of August, sunrise is at 6:36 am and sunset at 8:03 pm MDT.
Sunshine
In Saint Johns, the average sunshine in August is 11.6h.UV index
In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In August, the UV index of 5 transforms into the following advice:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Saint Johns in August?
What is the least humid month?
What is the average humidity in August?
How much does it rain in August?
When it does not snow in Saint Johns?
Does it snow in August?
What is the average length of the day in August?
When are sunrise and sunset in August?
How long on average sun shines in August?
What is the UV index reading in August?
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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