August weather forecastHarlem, MT
August
Weather in August
The last month of the summer, August, is another warm month in Harlem, Montana, with an average temperature fluctuating between 60.3°F (15.7°C) and 81.1°F (27.3°C).Temperature
Harlem observes an average high-temperature of a still warm 81.1°F (27.3°C) in August, barely different from 82°F (27.8°C) in July. Harlem cools down to an average low-temperature of 60.3°F (15.7°C) throughout the month of August.Heat index
For most parts of August, the heat index is calculated to be 80.6°F (27°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an estimation of the warmth sensation when considering humidity levels. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical 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
The least humid month is August, with an average relative humidity of 42%.Rainfall
In Harlem, in August, during 7.4 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. Throughout the year, there are 99.1 rainfall days, and 10.12" (257mm) of precipitation is accumulated.Snowfall
In Harlem, snow does not fall in June through August.Daylight
In Harlem, the average length of the day in August is 14h and 17min.On the first day of August, sunrise is at 5:50 am and sunset at 8:52 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:58 pm MDT.
Sunshine
In Harlem, the average sunshine in August is 11.6h.UV index
The average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: In August, an average UV index of 5 transforms into the following instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Harlem, MT
- Average high temperature in August: 81.1°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is February (26.2°F).
- Average low temperature in August: 60.3°F
The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is February (12.6°F).
Average pressure in August
Harlem, MT
- Average pressure in August: 29.88"Hg
The month with the highest atmospheric pressure is February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in August
Harlem, MT
- Average wind speed in August: 8.7mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in August
Harlem, MT
- Average humidity in August: 42%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (42%).
Average rainfall in August
Harlem, MT
- Average rainfall in August: 0.75"
The wettest month (with the highest rainfall) is June (1.85").
The driest months (with the least rainfall) are February, March and December (0.55").
Average rainfall days in August
Harlem, MT
- Average rainfall days in August: 7.4 days
The month with the highest number of rainy days is May (13.2 days).
The month with the least rainy days is February (4.6 days).
Average snowfall in August
Harlem, MT
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.02").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Harlem, MT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Harlem, MT
- Average daylight in August: 14h and 18min
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 24min).
- Average sunshine in August: 11h and 36min
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 12min).
Average sunshine days in August
Harlem, MT
- Average sunshine days in August: 21.1 days
The month with the most sunshine days is July (21.6 days).
The month with the least sunshine days is April (12.5 days).
Average UV index in August
Harlem, MT
- Average UV index in August: 5
The months with the highest UV index are June and 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
Harlem, MT
- Average cloud cover in August: 16
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in August
Harlem, 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).
