July weather forecastLewistown, MT
July
Weather in July
July stages the peak of summer in Lewistown sporting the highest temperature, reaching 78.8°F (26°C). Experiencing the sunshine around 11.8 hours daily, most of any month, reflects the climax of the sun’s reign. The month also showcases a minimal number of rainy days and an overall drop in humidity from June, resonating with the summer spirit. The wind pace slackens, replaced by the calmness of summer evenings. Being the heart of summer, July paints the city with bright hues of heat.Temperature
In Lewistown, the month of July is known for its highest average temperatures, reaching a high of 78.8°F (26°C) and a low of 54.3°F (12.4°C).Humidity
In July, the average relative humidity is 51%.Rainfall
In Lewistown, during July, the rain falls for 11.2 days and regularly aggregates up to 1.06" (27mm) of precipitation. In Lewistown, during the entire year, the rain falls for 126.2 days and collects up to 17.83" (453mm) of precipitation.Snowfall
In Lewistown, snow does not fall in July and August.Daylight
The average length of the day in July is 15h and 27min.On the first day of July, sunrise is at 5:26 am and sunset at 9:16 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 8:51 pm MDT.
Sunshine
July has the most sunshine of the year, 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 risk from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 6 during July leads to these advisories:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Lewistown, 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
Lewistown, 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
Lewistown, 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
Lewistown, 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
Lewistown, 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
Lewistown, 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
Lewistown, 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
Lewistown, 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
Lewistown, MT
- Average daylight in July: 15h and 30min
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 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
Lewistown, 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
Lewistown, 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
Lewistown, 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
Lewistown, 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).
