Columbus
Montana, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Columbus, MT

August, the last month of the summer, in Columbus, is also a moderately hot month, with temperature in the range of an average high of 81.1°F (27.3°C) and an average low of 57.2°F (14°C).

Temperature

In August, the average high-temperature is relatively the same as in July - a still moderately hot 81.1°F (27.3°C). In August, the average low-temperature is 57.2°F (14°C).

Heat index

In August, the average heat index is appraised at 80.8°F (27.1°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like activity, pregnancy, clothing, and metabolic differences affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

August is the least humid month in Columbus, with an average relative humidity of 41%.

Rainfall

In Columbus, Montana, in August, it is raining for 10.1 days, with typically 0.71" (18mm) of accumulated precipitation. In Columbus, during the entire year, the rain falls for 125.4 days and collects up to 14.49" (368mm) of precipitation.

Snowfall

In Columbus snow does not fall in June through August.

Daylight

The average length of the day in August is 14.1h.

Sunshine

In Columbus, the average sunshine is 11.7h.

UV index

In Columbus, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In August, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in August in Columbus?

The average high-temperature, in August, is 81.1°F (27.3°C), while the average low-temperature is 57.2°F (14°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), that takes the relative humidity and factores it into the air temperature reading, is appraised at 80.8°F (27.1°C).

What is the least humid month in Columbus?

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

What is the average humidity in August in Columbus?

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

How many days does it rain in August in Columbus?

In Columbus, during August, the rain falls for 10.1 days and regularly aggregates up to 0.71" (18mm) of precipitation.

Does it snow in Columbus in August?

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

When it does not snow in Columbus?

June through August are months without snowfall in Columbus, Montana.

How many hours of daylight does Columbus have in August?

The average length of the day in August is 14.1h.

How many hours of sunshine does Columbus have in August?

In Columbus, the average sunshine in August is 11.7h.

What is the UV index intensity in August in Columbus?

In August, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.
Average temperature in August - Columbus, MT
  • Average high temperature in August: 81.1°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is December (30.9°F).

  • Average low temperature in August: 57.2°F

The month with the highest average low temperature is August (57.2°F).
The coldest month (with the lowest average low temperature) is February (17.4°F).

Average humidity in August - Columbus, MT
  • Average humidity in August: 41%

The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (41%).

Average rainfall in August - Columbus, MT
  • Average rainfall in August: 0.71"

The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is January (0.63").

Average rainfall days in August - Columbus, MT
  • Average rainfall days in August: 10.1 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (6.7 days).

Average snowfall in August - Columbus, MT
  • Average snowfall in August: 0"

The month with the highest snowfall is February (7.36").
Months with the least snowfall are June, July and August (0").

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

The month with the highest number of snowfall days is February (13.4 days).
Months with the least snowfall days are June, July and August (0 days).

Average daylight in August / Average sunshine in August - Columbus, 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: 8.8h).

  • Average sunshine in August: 11.7h

The month with the most sunshine is July (Average sunshine: 12h).
Months with the least sunshine are February and December (Average sunshine: 6.2).

Average UV index in August - Columbus, MT
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).