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
July, with average temperatures reaching a high of 65.8°F (18.8°C) and a low of 40.1°F (4.5°C), is the warmest month.Humidity
In July, the average relative humidity is 62%.Rainfall
The month with the most rainfall is July, when the rain falls for 22.8 days and typically aggregates up to 3.35" (85mm) of precipitation.Snowfall
Months with snowfall are January through December. July is the month with the least snowfall. Snow falls for 1.3 days and accumulates 0.24" (6mm) of snow.Daylight
In Jefferson, the average length of the day in July is 14h and 37min.On the first day of July, sunrise is at 5:40 am and sunset at 8:34 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 8:16 pm MDT.
Sunshine
In Jefferson, Colorado, the average sunshine in July is 10.9h.UV index
May through August, with an average maximum UV index of 3, are months with the highest UV index. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 3 in July translates into these instructions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the warmest month?
What is the temperature in July?
What is the average humidity in July?
What is the rainiest month?
How many days does it rain in July?
When it does not snow?
How many days does it snow in July?
What is the average length of the day in July in Jefferson?
When is the sunrise / sunset in July?
How many hours of sunshine does Jefferson have in July?
What is the month with the highest UV index?
What is the UV index reading in July?
Average temperature in July
Jefferson, CO
- Average high temperature in July: 65.8°F
The warmest month (with the highest average high temperature) is July (65.8°F).
The month with the lowest average high temperature is December (21.2°F).
- Average low temperature in July: 40.1°F
The month with the highest average low temperature is July (40.1°F).
The coldest months (with the lowest average low temperature) are January and December (0.7°F).
Average pressure in July
Jefferson, CO
- Average pressure in July: 30.06"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are April and May (29.94"Hg).
Average wind speed in July
Jefferson, CO
- Average wind speed in July: 4.9mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in July
Jefferson, CO
- Average humidity in July: 62%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is June (54%).
Average rainfall in July
Jefferson, CO
- Average rainfall in July: 3.35"
The wettest month (with the highest rainfall) is July (3.35").
The driest month (with the least rainfall) is November (1.14").
Average rainfall days in July
Jefferson, CO
- Average rainfall days in July: 22.8 days
The month with the highest number of rainy days is July (22.8 days).
The month with the least rainy days is November (2.8 days).
Average snowfall in July
Jefferson, CO
- Average snowfall in July: 0.24"
The month with the highest snowfall is May (19.69").
The month with the least snowfall is July (0.24").
Average snowfall days in July
Jefferson, CO
- Average snowfall days in July: 1.3 days
The month with the highest number of snowfall days is April (22.8 days).
The month with the least snowfall days is July (1.3 days).
Average daylight in July /
Average sunshine in July
Jefferson, CO
- Average daylight in July: 14h and 4min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in July: 10h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in July
Jefferson, CO
- Average sunshine days in July: 5.8 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (5.8 days).
Average UV index in July
Jefferson, CO
- Average UV index in July: 3
The months with the highest UV index are May, June, July and August (UV index 3).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in July
Jefferson, CO
- Average cloud cover in July: 28
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 19).
Average visibility in July
Jefferson, CO
- Average visibility in July: 6mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
Jefferson, Colorado, USA
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