August weather forecast
Hays, MT

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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.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Hays in August?

During August, Hays experiences an average high-temperature of 82.2°F (27.9°C) and a low-temperature of 62.2°F (16.8°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, is estimated at 82.4°F (28°C).

What is the least humid month in Hays?

The least humid month is August, with an average relative humidity of 41%.

What is the average humidity in August in Hays?

In August, the average relative humidity in Hays, Montana, is 41%.

How many days does it rain in August in Hays?

In August, the rain falls for 9.3 days. Throughout August, 0.94" (24mm) of precipitation is accumulated.

When it does not snow in Hays?

June through August are months without snowfall in Hays.

Does it snow in Hays in August?

In Hays, Montana, in August, it doesn't snow. In September, it regularly snows.

How many hours of daylight does Hays have in August?

In August, the average day length is 14h and 14min.

When is the sunrise / sunset in August in Hays?

In August, on the first day of the month, sunrise is at 5:52 am and sunset at 8:49 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:57 pm MDT.

How many hours of sunshine does Hays have in August?

In Hays, Montana, the average sunshine duration in August is 11.6h.

What is the UV index intensity in August in Hays?

In August, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Hays, MT

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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 / Average sunshine in August - Hays, MT
  • Average daylight in August: 14h and 1min

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 4min

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 - 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 - 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 - 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 - 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).

Hays, Montana, USA

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