August weather forecastHays, MT
August
Weather in August
August, the last month of the summer in Hays, is another warm month, with an average temperature varying between 62.2°F (16.8°C) and 82.2°F (27.9°C).Temperature
Hays's weather in August indicates an average high-temperature of a still moderately hot 82.2°F (27.9°C), nearly consistent with the 83.5°F (28.6°C) of July. August witnesses an average low-temperature hovering around an enjoyable 62.2°F (16.8°C).Heat index
The heat index in August is estimated at 82.4°F (28°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', blends air temperature and moisture content to represent the felt temperature to humans. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Humidity
The least humid month is August, with an average relative humidity of 41%.Rainfall
In August, the rain falls for 9.3 days. Throughout August, 0.94" (24mm) of precipitation is accumulated. Throughout the year, there are 103.3 rainfall days, and 11.81" (300mm) of precipitation is accumulated.Snowfall
In Hays, snow does not fall in June through August.Daylight
In August, the average length of the day in Hays is 14h and 14min.On the first day of the month, sunrise is at 5:52 am and sunset at 8:49 pm. On the last day of August, sunrise is at 6:32 am and sunset at 7:57 pm MDT.
Sunshine
In Hays, the average sunshine in August is 11.6h.UV index
In Hays, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 6 in August interprets into the following advice:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Hays, MT
- Average high temperature in August: 82.2°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The months with the lowest average high temperature are January and February (25.7°F).
- Average low temperature in August: 62.2°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (11.8°F).
Average pressure in August
Hays, MT
- Average pressure in August: 29.88"Hg
The month with the highest atmospheric pressure is February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in August
Hays, MT
- Average wind speed in August: 9.4mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is February (8.8mph).
Average humidity in August
Hays, MT
- Average humidity in August: 41%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (41%).
Average rainfall in August
Hays, MT
- Average rainfall in August: 0.94"
The wettest months (with the highest rainfall) are May and June (1.89").
The driest months (with the least rainfall) are February and December (0.55").
Average rainfall days in August
Hays, MT
- Average rainfall days in August: 9.3 days
The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is December (4 days).
Average snowfall in August
Hays, MT
- Average snowfall in August: 0"
The month with the highest snowfall is December (3.9").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Hays, MT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (12.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Hays, MT
- Average daylight in August: 14h and 12min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in August: 11h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in August
Hays, MT
- Average sunshine days in August: 18.5 days
The month with the most sunshine days is September (19.6 days).
The month with the least sunshine days is April (13.4 days).
Average UV index in August
Hays, MT
- Average UV index in August: 6
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in August
Hays, MT
- Average cloud cover in August: 17
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 17).
Average visibility in August
Hays, MT
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).





