June weather forecastHerndon, IA
June
Weather in June
The first month of the summer, June, is a warm month in Herndon, Iowa, with an average temperature varying between 79.3°F (26.3°C) and 62.8°F (17.1°C).Temperature
The start of June brings a shift in the average high-temperature, increasing from May's pleasant 69.4°F (20.8°C) to a warm 79.3°F (26.3°C). Throughout the nights in June, an average low-temperature of 62.8°F (17.1°C) is noted.Humidity
In Herndon, the average relative humidity in June is 79%.Rainfall
In Herndon, in June, it is raining for 17.3 days, with typically 3.94" (100mm) of accumulated precipitation. Throughout the year, in Herndon, there are 125.7 rainfall days, and 26.5" (673mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The month with the longest days is June, with an average of 15h and 12min of daylight.On the first day of June, sunrise is at 5:44 am and sunset at 8:46 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:56 pm CDT.
Sunshine
In Herndon, the average sunshine in June is 9.5h.UV index
June and July, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In June, a daily UV index of 6 turns into the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Herndon, 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
Herndon, 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
Herndon, 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
Herndon, 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
Herndon, 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
Herndon, 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
Herndon, 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
Herndon, 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
Herndon, IA
- Average daylight in June: 15h and 12min
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 30min
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
Herndon, 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
Herndon, 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
Herndon, 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
Herndon, 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).
