July weather forecastShelby, MT
July
Weather in July
July is the peak of summer in Shelby, Montana, and the city basks under the warm sunlight. With an average high temperature of 80.8°F (27.1°C), it stands as the warmest month of the year. In contrast to the winter months, cloud coverage is minimal, and rain or snow is quite rare, providing plenty of opportunities for long, sunny days. It is a great time for road trips and outdoor summer concerts. As the summer heat takes hold, locals take advantage of the high temperatures for summer bonfires and night sky observations.Temperature
July, with average temperatures reaching a high of 80.8°F (27.1°C) and a low of 57.4°F (14.1°C), is the warmest month.Heat index
In July, the heat index is evaluated at 80.6°F (27°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.Metrics for the heat index primarily focus on shaded spots and light wind conditions. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Humidity
In July, the average relative humidity is 44%.Rainfall
In Shelby, in July, during 7.3 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. Throughout the year, there are 84.2 rainfall days, and 9.29" (236mm) of precipitation is accumulated.Snowfall
June through August are months without snowfall.Daylight
In Shelby, the average length of the day in July is 15h and 38min.On the first day of July, sunrise is at 5:30 am and sunset at 9:32 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 9:05 pm MDT.
Sunshine
The month with the most sunshine is July, with an average of 11.9h of sunshine.UV index
With an average maximum UV index of 6, July is the month with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In July, the maximum UV index of 6 translates into these guidelines:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Shelby, MT
- Average high temperature in July: 80.8°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is December (27.7°F).
- Average low temperature in July: 57.4°F
The month with the highest average low temperature is August (58.3°F).
The coldest month (with the lowest average low temperature) is December (15.4°F).
Average pressure in July
Shelby, MT
- Average pressure in July: 29.91"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in July
Shelby, MT
- Average wind speed in July: 8.9mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in July
Shelby, MT
- Average humidity in July: 44%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (40%).
Average rainfall in July
Shelby, MT
- Average rainfall in July: 0.55"
The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and December (0.39").
Average rainfall days in July
Shelby, MT
- Average rainfall days in July: 7.3 days
The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in July
Shelby, MT
- Average snowfall in July: 0"
The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July and August (0").
Average snowfall days in July
Shelby, 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 July and August (0 days).
Average daylight in July /
Average sunshine in July
Shelby, MT
- Average daylight in July: 15h and 36min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in July: 11h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in July
Shelby, MT
- Average sunshine days in July: 21.1 days
The month with the most sunshine days is September (22.2 days).
The month with the least sunshine days is April (14.7 days).
Average UV index in July
Shelby, MT
- Average UV index in July: 6
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in July
Shelby, MT
- Average cloud cover in July: 15
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in July
Shelby, 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).





