Contents
- Weather in June
- Frequently asked questions
- Average temperature in June
- Average pressure in June
- Average wind speed in June
- Average humidity in June
- Average rainfall in June
- Average rainfall days in June
- Average snowfall in June
- Average snowfall days in June
- Average daylight in June
- Average sunshine in June
- Average sunshine days in June
- Average UV index in June
- Average cloud cover in June
- Average visibility in June
Weather in June
Temperature
June's onset is marked by a temperature increase, moving from a pleasant 69.4°F (20.8°C) in May to a warm 79.3°F (26.3°C). Jefferson records an average nighttime low of 62.8°F (17.1°C) in June.Humidity
In Jefferson, the average relative humidity in June is 79%.Rainfall
In June, the rain falls for 17.3 days. Throughout June, 3.94" (100mm) of precipitation is accumulated. Throughout the year, there are 125.7 rainfall days, and 26.5" (673mm) of precipitation is accumulated.Snowfall
In Jefferson, snow does not fall in June through September.Daylight
June has the longest days of the year, with an average of 15h and 12min of daylight.On the first day of June, sunrise is at 5:43 am and sunset at 8:47 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:57 pm CDT.
Sunshine
In June, the average sunshine is 9.5h.UV index
The months with the highest UV index are June and July, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.Note: In June, the maximum UV index of 6 translates into these guidelines:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in June?
What is the average humidity in June?
How many days does it rain in June?
When it does not snow?
Does it snow in June?
When are the longest days?
How many hours of daylight does Jefferson have in June?
When is the sunrise / sunset in June?
How long on average sun shines in June?
When is the highest UV index?
What is the UV index intensity in June?
Average temperature in June
Jefferson, IA
- Average high temperature in June: 79.3°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in June: 62.8°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in June
Jefferson, IA
- Average pressure in June: 29.88"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in June
Jefferson, IA
- Average wind speed in June: 8.3mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in June
Jefferson, IA
- Average humidity in June: 79%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).
Average rainfall in June
Jefferson, IA
- Average rainfall in June: 3.94"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in June
Jefferson, IA
- Average rainfall days in June: 17.3 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in June
Jefferson, IA
- Average snowfall in June: 0"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in June
Jefferson, IA
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in June /
Average sunshine in June
Jefferson, IA
- Average daylight in June: 15h and 1min
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 June: 9h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in June
Jefferson, IA
- Average sunshine days in June: 11.1 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in June
Jefferson, IA
- Average UV index in June: 6
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in June
Jefferson, IA
- Average cloud cover in June: 35
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in June
Jefferson, IA
- Average visibility in June: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Jefferson, Iowa, USA
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