Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
Alton's warmest weather arrives in July, when temperatures average a high of 79°F (26.1°C) and a low of 48.9°F (9.4°C).Humidity
The average relative humidity in July is 45%.Rainfall
July is the month with the least rainfall. Rain falls for 7.8 days and accumulates 0.63" (16mm) of precipitation.Snowfall
In Alton, snow does not fall in July and August.Daylight
The average length of the day in July is 14h and 54min.On the first day of the month, sunrise is at 5:52 am and sunset at 9:04 pm. On the last day of July, sunrise is at 6:17 am and sunset at 8:44 pm MDT.
Sunshine
With an average of 11.9h of sunshine, July has the most sunshine of the year in Alton.UV index
The months with the highest UV index are June and July, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In July, the UV index of 5 transforms into the following advice:
Ensure safety - Recommendations to avert sunburn are presented. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the hottest?
What is the temperature in July?
What is the average humidity in July?
What is the driest month?
How many days does it rain in July?
When it does not snow?
Does it snow in July?
How many hours of daylight does Alton have in July?
When is the sunrise / sunset in July?
What month has the most sunshine?
How many hours of sunshine does Alton have in July?
What is the month with the highest UV index?
What is the UV index reading in July in Alton?
Average temperature in July
Alton, ID
- Average high temperature in July: 79°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is December (25.2°F).
- Average low temperature in July: 48.9°F
The month with the highest average low temperature is July (48.9°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).
Average pressure in July
Alton, ID
- Average pressure in July: 29.95"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in July
Alton, ID
- Average wind speed in July: 5.3mph
The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest months (with the lowest average wind speed) are January and December (4.2mph).
Average humidity in July
Alton, ID
- Average humidity in July: 45%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is August (42%).
Average rainfall in July
Alton, ID
- Average rainfall in July: 0.63"
The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in July
Alton, ID
- Average rainfall days in July: 7.8 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (6 days).
Average snowfall in July
Alton, ID
- Average snowfall in July: 0"
The month with the highest snowfall is February (18.39").
The months with the least snowfall are July and August (0").
Average snowfall days in July
Alton, ID
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is December (21.6 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in July /
Average sunshine in July
Alton, ID
- Average daylight in July: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in July: 11h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in July
Alton, ID
- Average sunshine days in July: 18.8 days
The month with the most sunshine days is July (18.8 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in July
Alton, ID
- Average UV index in July: 5
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in July
Alton, ID
- Average cloud cover in July: 12
The month with the most cloud cover is February (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in July
Alton, ID
- 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 and February (3mi).
Alton, Idaho, USA
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