July weather forecast
Sumatra, MT

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Weather in July

July is a hot summer month in Sumatra, Montana, with an average temperature varying between 86.5°F (30.3°C) and 64.2°F (17.9°C).

Temperature

Sumatra's warmest weather arrives in July, when temperatures average a high of 86.5°F (30.3°C) and a low of 64.2°F (17.9°C).

Heat index

The heat index value during July is estimated at a hot 86°F (30°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Know that the heat index computations account for shaded terrains and slight winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', joins air temperature with relative humidity to produce a temperature perception for humans. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.

Humidity

In July, the average relative humidity in Sumatra, Montana, is 40%.

Rainfall

In Sumatra, in July, it is raining for 10.4 days, with typically 0.87" (22mm) of accumulated precipitation. In Sumatra, during the entire year, the rain falls for 99.5 days and collects up to 11.06" (281mm) of precipitation.

Snowfall

In Sumatra, snow does not fall in June through August.

Daylight

In July, the average length of the day is 15h and 24min.
On the first day of July in Sumatra, Montana, sunrise is at 5:21 am and sunset at 9:07 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:42 pm MDT.

Sunshine

July has the most sunshine of the year, with an average of 11.8h of sunshine.

UV index

The month with the highest UV index is July, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In July, a daily maximum UV index of 7 leads to the following instructions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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Frequently asked questions

What is the hottest time of year in Sumatra?

In Sumatra, the peak temperatures are generally noted in July, averaging a high of 86.5°F (30.3°C) and a low of 64.2°F (17.9°C).

How hot is it in Sumatra in July?

The high-temperature, in July, in Sumatra, records 86.5°F (30.3°C), while the low-temperature is 64.2°F (17.9°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in July is estimated at 86°F (30°C).

What is the average humidity in July in Sumatra?

The average relative humidity in July in Sumatra, Montana, is 40%.

How much does it rain in Sumatra in July?

In July, the rain falls for 10.4 days. Throughout July, 0.87" (22mm) of precipitation is accumulated.

When it does not snow in Sumatra?

June through August are months without snowfall.

How many hours of daylight does Sumatra have in July?

In July, the average day length is 15h and 24min.

What time are sunrise and sunset in July in Sumatra?

On the first day of July in Sumatra, sunrise is at 5:21 am and sunset at 9:07 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:42 pm MDT.

What month has the most sunshine in Sumatra?

The month with the most sunshine in Sumatra, Montana, is July, with an average of 11.8h of sunshine.

How long on average sun shines in July in Sumatra?

In July, the average sunshine duration is 11.8h.

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

With an average maximum UV index of 7, July is the month with the highest UV index in Sumatra.

How high is the UV index in July in Sumatra?

In Sumatra, the average daily maximum UV index in July is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from unprotected exposure to 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 July
Sumatra, MT

Average temperature in July - Sumatra, MT
  • Average high temperature in July: 86.5°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The months with the lowest average high temperature are January and December (30.9°F).

  • Average low temperature in July: 64.2°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).

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Average pressure in July
Sumatra, MT

Average pressure in July - Sumatra, MT
  • Average pressure in July: 29.89"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in July
Sumatra, MT

Average wind speed in July - Sumatra, MT
  • Average wind speed in July: 8.2mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is July (8.2mph).

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Average humidity in July
Sumatra, MT

Average humidity in July - Sumatra, MT
  • Average humidity in July: 40%

The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (38%).

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Average rainfall in July
Sumatra, MT

Average rainfall in July - Sumatra, MT
  • Average rainfall in July: 0.87"

The wettest month (with the highest rainfall) is May (1.81").
The driest months (with the least rainfall) are January, November and December (0.47").

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Average rainfall days in July
Sumatra, MT

Average rainfall days in July - Sumatra, MT
  • Average rainfall days in July: 10.4 days

The month with the highest number of rainy days is May (13.7 days).
The month with the least rainy days is February (3.8 days).

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Average snowfall in July
Sumatra, MT

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

The month with the highest snowfall is February (3.74").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in July
Sumatra, MT

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

The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in July /
Average sunshine in July
Sumatra, MT

Average daylight in July / Average sunshine in July - Sumatra, MT
  • Average daylight in July: 15h and 2min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in July: 11h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 18min).

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Average sunshine days in July
Sumatra, MT

Average sunshine days in July - Sumatra, MT
  • Average sunshine days in July: 15.3 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is April (14.2 days).

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Average UV index in July
Sumatra, MT

Average UV index in July - Sumatra, MT
  • Average UV index in July: 7

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in July
Sumatra, MT

Average cloud cover in July - Sumatra, MT
  • Average cloud cover in July: 15

The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 15).

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Average visibility in July
Sumatra, MT

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

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

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Sumatra, Montana, USA

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