July weather forecastRoy, MT
July
Weather in July
July in Roy, Montana, is a moderately hot summer month, with an average temperature varying between 78.8°F (26°C) and 54.3°F (12.4°C).Temperature
Roy's temperature records reveal July as the warmest month, marked by average highs of 78.8°F (26°C) and lows of 54.3°F (12.4°C).Humidity
The average relative humidity in July in Roy is 51%.Rainfall
In July, the rain falls for 11.2 days. Throughout July, 1.06" (27mm) of precipitation is accumulated. In Roy, during the entire year, the rain falls for 126.2 days and collects up to 17.83" (453mm) of precipitation.Snowfall
In Roy, Montana, snow does not fall in July and August.Daylight
In July, the average length of the day in Roy, Montana, is 15h and 29min.On the first day of the month, sunrise is at 5:23 am and sunset at 9:15 pm. On the last day of July, sunrise is at 5:54 am and sunset at 8:50 pm MDT.
Sunshine
The month with the most sunshine is July, with an average of 11.8h of sunshine.UV index
July is the month with the highest UV index, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In July, a regular UV index of 6 translates into these guidelines:
Shield from overexposure. Defense against sun-related harm is required. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Roy, MT
- Average high temperature in July: 78.8°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The months with the lowest average high temperature are February and December (29.1°F).
- Average low temperature in July: 54.3°F
The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is February (15.3°F).
Average pressure in July
Roy, MT
- Average pressure in July: 29.9"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
Roy, MT
- Average wind speed in July: 7.6mph
The windiest months (with the highest average wind speed) are January, April and October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.4mph).
Average humidity in July
Roy, MT
- Average humidity in July: 51%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (47%).
Average rainfall in July
Roy, MT
- Average rainfall in July: 1.06"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in July
Roy, MT
- Average rainfall days in July: 11.2 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in July
Roy, MT
- Average snowfall in July: 0"
The month with the highest snowfall is April (9.13").
The months with the least snowfall are July and August (0").
Average snowfall days in July
Roy, MT
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (15.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in July /
Average sunshine in July
Roy, MT
- Average daylight in July: 15h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in July: 11h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in July
Roy, MT
- Average sunshine days in July: 16.6 days
The month with the most sunshine days is September (19.3 days).
The month with the least sunshine days is April (8.3 days).
Average UV index in July
Roy, 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, April, October, November and December (UV index 2).
Average cloud cover in July
Roy, MT
- Average cloud cover in July: 16
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in July
Roy, 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).
