July weather forecast
Roundup, MT

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Weather in July

July is the hottest month in Roundup, Montana, with the temperature soaring up to 84.7°F (29.3°C). Despite this peak in the temperature, rainfall decreases to its lowest at 0.83" (21mm), offering a genuinely dry and warm summer month. The weather becomes sultry, characterized by less humidity and high levels of sunshine. Favorable wind conditions and continuously clear visibility round off the weather for July in the city.

Temperature

July, recognised by an average high temperature of 84.7°F (29.3°C) and a low of 62.4°F (16.9°C), is Roundup's warmest month.

Heat index

Throughout July, the heat index is appraised at 84.2°F (29°C). If exposure and activity are sustained, they might cause a feeling of weariness, resulting in heat cramps.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.

Humidity

In July, the average relative humidity in Roundup is 41%.

Rainfall

In Roundup, in July, it is raining for 11.9 days, with typically 0.83" (21mm) of accumulated precipitation. Throughout the year, in Roundup, Montana, there are 114.3 rainfall days, and 12.13" (308mm) of precipitation is accumulated.

Snowfall

June through August are months without snowfall in Roundup.

Daylight

In July, the average length of the day is 15h and 23min.
On the first day of July, sunrise is at 5:26 am and sunset at 9:10 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 8:45 pm MDT.

Sunshine

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

UV index

The month with the highest UV index in Roundup is July, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 7 in July translates into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the warmest month in Roundup?

Roundup's warmest month, July, generally records average temperatures ranging from a high of 84.7°F (29.3°C) to a low of 62.4°F (16.9°C).

How hot does it get in Roundup in July?

The high-temperature in Roundup during July is 84.7°F (29.3°C) and the low-temperature is 62.4°F (16.9°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, is appraised at 84.2°F (29°C).

What is the average humidity in July in Roundup?

The average relative humidity in July in Roundup, Montana, is 41%.

How much does it rain in Roundup in July?

In Roundup, in July, it is raining for 11.9 days, with typically 0.83" (21mm) of accumulated precipitation.

When it does not snow in Roundup?

June through August are months without snowfall in Roundup.

How many hours of daylight does Roundup have in July?

In Roundup, Montana, the average day length in July is 15h and 23min.

When is the sunrise / sunset in July in Roundup?

In July, on the first day of the month, sunrise is at 5:26 am and sunset at 9:10 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 8:45 pm MDT.

What month has the most sunshine in Roundup?

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

How long on average sun shines in July in Roundup?

The average sunshine duration in July in Roundup is 11.8h.

When is the highest UV index in Roundup?

The month with the highest UV index in Roundup, Montana, is July, with an average maximum UV index of 7.

What is the UV index intensity in July in Roundup?

In Roundup, the average daily maximum UV index in July is 7. A UV Index reading of 6 to 7 represents a high hazard to health 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 July
Roundup, MT

Average temperature in July - Roundup, MT
  • Average high temperature in July: 84.7°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (31.1°F).

  • Average low temperature in July: 62.4°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is February (18°F).

Average pressure in July
Roundup, MT

Average pressure in July - Roundup, 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 (29.85"Hg).

Average wind speed in July
Roundup, MT

Average wind speed in July - Roundup, MT
  • Average wind speed in July: 8.5mph

The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest months (with the lowest average wind speed) are July and August (8.5mph).

Average humidity in July
Roundup, MT

Average humidity in July - Roundup, MT
  • Average humidity in July: 41%

The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (39%).

Average rainfall in July
Roundup, MT

Average rainfall in July - Roundup, MT
  • Average rainfall in July: 0.83"

The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is January (0.55").

Average rainfall days in July
Roundup, MT

Average rainfall days in July - Roundup, MT
  • Average rainfall days in July: 11.9 days

The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (4.6 days).

Average snowfall in July
Roundup, MT

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

The month with the highest snowfall is February (3.78").
The months with the least snowfall are June, July and August (0").

Average snowfall days in July
Roundup, MT

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

The month with the highest number of snowfall days is February (11.1 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in July / Average sunshine in July - Roundup, 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 42min).

  • 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 12min).

Average sunshine days in July
Roundup, MT

Average sunshine days in July - Roundup, MT
  • Average sunshine days in July: 15.6 days

The month with the most sunshine days is September (19.5 days).
The month with the least sunshine days is April (12.8 days).

Average UV index in July
Roundup, MT

Average UV index in July - Roundup, 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).

Average cloud cover in July
Roundup, MT

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

The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 16).

Average visibility in July
Roundup, MT

Average visibility in July - Roundup, 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).

Roundup, Montana, USA

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