August weather forecast and climate
Hamilton, MT

A strong suspension bridge over a fast river in Hamilton, Montana, overlooking scenic trees and hilly landscapes over the other side of the shore
A strong suspension bridge over a fast river in Hamilton, Montana, overlooking scenic trees and hilly landscapes over the other side of the shore
The last month of the summer, August, is another warm month in Hamilton, Montana, with average temperature varying between 46.9°F (8.3°C) and 76.3°F (24.6°C).

Temperature

In August, the average high-temperature is practically the same as in July - a still moderately hot 76.3°F (24.6°C). In August, the average low-temperature is 46.9°F (8.3°C).

Humidity

The least humid month in Hamilton is August, with an average relative humidity of 50%.

Rainfall

August is the month with the least rainfall. Rain falls for 8.7 days and accumulates 0.75" (19mm) of precipitation.

Snowfall

In Hamilton snow does not fall in June through August.

Daylight

In August, the average length of the day is 14.1h.

Sunshine

July and August, with an average of 11.7h of sunshine, are months with the most sunshine.

UV index

In August, the average daily maximum UV index in Hamilton is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 4 in August transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in August in Hamilton?

In August, the average high-temperature is 76.3°F (24.6°C), and the average low-temperature is 46.9°F (8.3°C).

What is the least humid month in Hamilton?

The least humid month in Hamilton is August, with an average relative humidity of 50%.

What is the average humidity in August in Hamilton?

The average relative humidity in August in Hamilton, Montana, is 50%.

How many days does it rain in August in Hamilton?

In Hamilton, in August, during 8.7 rainfall days, 0.75" (19mm) of precipitation is typically accumulated.

What is the driest month in Hamilton?

August is the month with the least rainfall in Hamilton, Montana. Rain falls for 8.7 days and accumulates 0.75" (19mm) of precipitation.

Does it snow in Hamilton in August?

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

When it does not snow in Hamilton?

June through August are months without snowfall in Hamilton.

What is the average length of the day in August in Hamilton?

In Hamilton, Montana, the average length of the day in August is 14.1h.

What are the months with the most sunshine in Hamilton?

July and August, with an average of 11.7h of sunshine, are months with the most sunshine in Hamilton.

How long on average sun shines in August in Hamilton?

The average sunshine in August in Hamilton is 11.7h.

How high is the UV index in August in Hamilton?

In Hamilton, the average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to the Sun's UV rays.
Average temperature in August - Hamilton, MT
  • Average high temperature in August: 24.6°C

The warmest month (with the highest average high temperature) is July (25°C).
The month with the lowest average high temperature is December (-2.9°C).

  • Average low temperature in August: 8.3°C

The month with the highest average low temperature is August (8.3°C).
The coldest month (with the lowest average low temperature) is December (-10°C).

Average pressure in August - Hamilton, MT
  • Average pressure in August: 1014.8mbar

The month with the highest atmospheric pressure is January (1023mbar).
The month with the lowest atmospheric pressure is June (1013.7mbar).

Average wind speed in August - Hamilton, MT
  • Average wind speed in August: 6.6km/h

The windiest month (with the highest average wind speed) is January (8.6km/h).
The calmest month (with the lowest average wind speed) is August (6.6km/h).

Average humidity in August - Hamilton, MT
  • Average humidity in August: 50%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (50%).

Average rainfall in August - Hamilton, MT
  • Average rainfall in August: 19mm

The wettest months (with the highest rainfall) are February and April (60mm).
The driest month (with the least rainfall) is August (19mm).

Average rainfall days in August - Hamilton, MT
  • Average rainfall days in August: 8.7 days

The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is July (8 days).

Average snowfall in August - Hamilton, MT
  • Average snowfall in August: 0mm

The month with the highest snowfall is February (331mm).
Months with the least snowfall are June, July and August (0mm).

Average snowfall days in August - Hamilton, MT
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (19.3 days).
Months with the least snowfall days are June, July and August (0 days).

Average daylight in August / Average sunshine in August - Hamilton, MT
  • Average daylight in August: 14.1h

The month with the longest days is June (Average daylight: 15.7h).
The month with the shortest days is December (Average daylight: 8.7h).

  • Average sunshine in August: 11.7h

Months with the most sunshine are July and August (Average sunshine: 11.7h).
Months with the least sunshine are January and December (Average sunshine: 5.4).

Average sunshine days in August - Hamilton, MT
  • Average sunshine days in August: 17.4 days

The month with the most sunshine days is July (18.9 days).
The month with the least sunshine days is February (5.6 days).

Average UV index in August - Hamilton, MT
  • Average UV index in August: 4

The month with the highest UV index is July (UV index 5).
Months with the lowest UV index are February and December (UV index 1).

Average visibility in August - Hamilton, MT
  • Average visibility in August: 10km

Months with the highest visibility are July and August (10km).
Months with the lowest visibility are January, February, March and December (7km).