July weather forecast and climate
Simpson, MT

July is a moderately hot summer month in Simpson, Montana, with average temperature fluctuating between 82.8°F (28.2°C) and 60.4°F (15.8°C).

Temperature

With an average high-temperature of 82.8°F (28.2°C) and an average low-temperature of 60.4°F (15.8°C), July is the warmest month.

Heat index

In July, the average heat index is appraised at 82.6°F (28.1°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity 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 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, wind, clothing), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Simpson, the average relative humidity in July is 43%.

Rainfall

In Simpson, Montana, during 9.2 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. In Simpson, during the entire year, the rain falls for 98.7 days and collects up to 8.23" (209mm) of precipitation.

Snowfall

In Simpson snow does not fall in June through August.

Daylight

In July, the average length of the day is 15.7h.

Sunshine

With an average of 12h of sunshine, July has the most sunshine of the year in Simpson.

UV index

With an average maximum UV index of 6, July is the month with the highest UV index in Simpson. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: In July, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the warmest month in Simpson?

July is the warmest month in Simpson, Montana, with an average high-temperature of 82.8°F (28.2°C) and an average low-temperature of 60.4°F (15.8°C).

What is the temperature in July in Simpson?

In July, in Simpson, the average high-temperature is 82.8°F (28.2°C), and the average low-temperature is 60.4°F (15.8°C). In July, the average heat index (a.k.a. 'feels like', 'real feel'), that takes the relative humidity and factores it into the air temperature reading, is estimated at 82.6°F (28.1°C).

What is the average humidity in July in Simpson?

In July, the average relative humidity in Simpson, Montana, is 43%.

How much does it rain in Simpson in July?

In Simpson, during July, the rain falls for 9.2 days and regularly aggregates up to 0.79" (20mm) of precipitation.

When it does not snow in Simpson?

In Simpson, Montana, snow does not fall in June through August.

What is the average length of the day in July in Simpson?

The average length of the day in July is 15.7h.

What month has the most sunshine in Simpson?

The month with the most sunshine in Simpson, Montana, is July, with an average of 12h of sunshine.

How long on average sun shines in July in Simpson?

In July, the average sunshine in Simpson is 12h.

What is the month with the highest UV index in Simpson?

July is the month with the highest UV index in Simpson, Montana, with an average maximum UV index of 6.

What is the UV index intensity in July in Simpson?

The average daily maximum UV index in July in Simpson, Montana, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in July - Simpson, MT
  • Average high temperature in July: 82.8°F

The warmest month (with the highest average high temperature) is July (82.8°F).
Months with the lowest average high temperature are January and December (27.1°F).

  • Average low temperature in July: 60.4°F

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).

Average pressure in July - Simpson, MT
  • Average pressure in July: 29.89"

Months with the highest atmospheric pressure are January and February (30.12").
The month with the lowest atmospheric pressure is June (29.84").

Average wind speed in July - Simpson, MT
  • Average wind speed in July: 8.8mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

Average humidity in July - Simpson, MT
  • Average humidity in July: 43%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (40%).

Average rainfall in July - Simpson, MT
  • Average rainfall in July: 0.79"

The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is December (0.31").

Average rainfall days in July - Simpson, MT
  • Average rainfall days in July: 9.2 days

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (4 days).

Average snowfall in July - Simpson, MT
  • Average snowfall in July: 0"

The month with the highest snowfall is February (2.72").
Months with the least snowfall are June, July and August (0").

Average snowfall days in July - Simpson, MT
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (11 days).
Months with the least snowfall days are June, July and August (0 days).

Average daylight in July / Average sunshine in July - Simpson, MT
  • Average daylight in July: 15.7h

The month with the longest days is June (Average daylight: 16.1h).
The month with the shortest days is December (Average daylight: 8.3h).

  • Average sunshine in July: 12h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is February (Average sunshine: 5.3h).

Average sunshine days in July - Simpson, MT
  • Average sunshine days in July: 19.6 days

The month with the most sunshine days is September (20.3 days).
The month with the least sunshine days is April (12.8 days).

Average UV index in July - Simpson, MT
  • Average UV index in July: 6

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

Average cloud cover in July - Simpson, MT
  • Average cloud cover in July: 16

The month with the most cloud cover is February (Cloud cover 46).
Months with the least cloud cover are July and August (Cloud cover 16).

Average visibility in July - Simpson, MT
  • Average visibility in July: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).