June weather forecastJefferson, CO
June
Weather in June
The first month of the summer, June, is a comfortable month in Jefferson, Colorado, with an average temperature ranging between max 61.3°F (16.3°C) and min 35.1°F (1.7°C).Temperature
Jefferson's June weather is characterized by a distinct upsurge in high-temperatures, soaring from May's chilly 45.5°F (7.5°C) to a refreshing 61.3°F (16.3°C). Jefferson documents a marked decrease from day to night, with an average low of 35.1°F (1.7°C) throughout June.Humidity
With an average relative humidity of 54%, June is the least humid month.Rainfall
In Jefferson, in June, it is raining for 13.3 days, with typically 2.17" (55mm) of accumulated precipitation. Throughout the year, there are 110.4 rainfall days, and 24.09" (612mm) of precipitation is accumulated.Snowfall
January through December are months with snowfall. In June, it is snowing for 6.5 days. Throughout June, 4.06" (103mm) of snow is accumulated. In Jefferson, during the entire year, snow falls for 158 days and aggregates up to 118.82" (3018mm) of snow.Daylight
With an average of 14h and 54min of daylight, June has the longest days of the year.On the first day of the month, sunrise is at 5:37 am and sunset at 8:24 pm. On the last day of June, in Jefferson, sunrise is at 5:40 am and sunset at 8:34 pm MDT.
Sunshine
With an average of 11.4h of sunshine, June has the most sunshine of the year.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 3 during June translates into the following directions:
Act with care - Obligation to protect against skin and eye damage is highlighted. Around midday, solar radiation is most harmful; hence, exposure should be limited. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Jefferson, CO
- Average high temperature in June: 61.3°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 June: 35.1°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 June
Jefferson, CO
- Average pressure in June: 29.96"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 June
Jefferson, CO
- Average wind speed in June: 6.5mph
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 June
Jefferson, CO
- Average humidity in June: 54%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is June (54%).
Average rainfall in June
Jefferson, CO
- Average rainfall in June: 2.17"
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 June
Jefferson, CO
- Average rainfall days in June: 13.3 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 June
Jefferson, CO
- Average snowfall in June: 4.06"
The month with the highest snowfall is May (19.69").
The month with the least snowfall is July (0.24").
Average snowfall days in June
Jefferson, CO
- Average snowfall days in June: 6.5 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 June /
Average sunshine in June
Jefferson, CO
- Average daylight in June: 14h and 54min
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 June: 11h and 24min
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 June
Jefferson, CO
- Average sunshine days in June: 10.9 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 June
Jefferson, CO
- Average UV index in June: 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 June
Jefferson, CO
- Average cloud cover in June: 19
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 June
Jefferson, CO
- Average visibility in June: 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).
