July weather forecastDarby, MT
July
Weather in July
July in Darby, Montana, is a moderately hot summer month, with temperature in the range of an average high of 77°F (25°C) and an average low of 46.8°F (8.2°C).Temperature
With average high temperatures of 77°F (25°C) and lows of 46.8°F (8.2°C), July is the warmest month.Humidity
The average relative humidity in July is 51%.Rainfall
In Darby, during July, the rain falls for 8 days and regularly aggregates up to 0.79" (20mm) of precipitation. In Darby, during the entire year, the rain falls for 163.6 days and collects up to 20.83" (529mm) of precipitation.Snowfall
In Darby, snow does not fall in June through August.Daylight
In July, the average length of the day is 15h and 19min.On the first day of the month, sunrise is at 5:50 am and sunset at 9:31 pm. On the last day of July, sunrise is at 6:18 am and sunset at 9:07 pm MDT.
Sunshine
The months with the most sunshine are July and August, with an average of 11.7h of sunshine.UV index
With an average maximum UV index of 5, July is the month with the highest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum daily UV index of 5 during July morphs into the following directions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Darby, MT
- Average high temperature in July: 77°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (26.8°F).
- Average low temperature in July: 46.8°F
The month with the highest average low temperature is August (46.9°F).
The coldest month (with the lowest average low temperature) is December (14°F).
Average pressure in July
Darby, MT
- Average pressure in July: 29.97"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in July
Darby, MT
- Average wind speed in July: 4.3mph
The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in July
Darby, MT
- Average humidity in July: 51%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (50%).
Average rainfall in July
Darby, MT
- Average rainfall in July: 0.79"
The wettest months (with the highest rainfall) are February and April (2.36").
The driest month (with the least rainfall) is August (0.75").
Average rainfall days in July
Darby, MT
- Average rainfall days in July: 8 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is July (8 days).
Average snowfall in July
Darby, MT
- Average snowfall in July: 0"
The month with the highest snowfall is February (13.03").
The months with the least snowfall are June, July and August (0").
Average snowfall days in July
Darby, MT
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (19.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in July /
Average sunshine in July
Darby, MT
- Average daylight in July: 15h and 18min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in July: 11h and 42min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in July
Darby, MT
- Average sunshine days in July: 18.9 days
The month with the most sunshine days is July (18.9 days).
The month with the least sunshine days is February (5.6 days).
Average UV index in July
Darby, MT
- Average UV index in July: 5
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in July
Darby, MT
- Average cloud cover in July: 14
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in July
Darby, MT
- Average visibility in July: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
