June weather forecastGrinnell, IA
June
Weather in June
The first month of the summer, June, is a warm month in Grinnell, Iowa, with temperature in the range of an average low of 62.4°F (16.9°C) and an average high of 78.4°F (25.8°C).Temperature
The start of June is characterized by an increase in the average high-temperature, transitioning from a pleasant 69.3°F (20.7°C) in May to a moderately hot 78.4°F (25.8°C). Grinnell reports an average nighttime low-temperature of 62.4°F (16.9°C) in June.Humidity
In Grinnell, Iowa, the average relative humidity in June is 82%.Rainfall
The months with the most rainfall are May and June, with an average 1.97" (50mm) of precipitation.Snowfall
In Grinnell, snow does not fall in June through September.Daylight
June has the longest days of the year in Grinnell, Iowa, with an average of 15h and 12min of daylight.On the first day of the month, sunrise is at 5:38 am and sunset at 8:39 pm. On the last day of June, in Grinnell, sunrise is at 5:39 am and sunset at 8:49 pm CDT.
Sunshine
In June, the average sunshine in Grinnell, Iowa, is 9.7h.UV index
The months with the highest UV index are June and July, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index, 6 during June, leads to the following recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Grinnell, IA
- Average high temperature in June: 78.4°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in June: 62.4°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure in June
Grinnell, IA
- Average pressure in June: 29.89"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in June
Grinnell, IA
- Average wind speed in June: 8mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in June
Grinnell, IA
- Average humidity in June: 82%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall in June
Grinnell, IA
- Average rainfall in June: 1.97"
The wettest months (with the highest rainfall) are May and June (1.97").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in June
Grinnell, IA
- Average rainfall days in June: 15.1 days
The month with the highest number of rainy days is June (15.1 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in June
Grinnell, IA
- Average snowfall in June: 0"
The month with the highest snowfall is January (1.81").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in June
Grinnell, IA
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is January (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in June /
Average sunshine in June
Grinnell, 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 42min
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 6min).
Average sunshine days in June
Grinnell, IA
- Average sunshine days in June: 11.5 days
The month with the most sunshine days is January (21.1 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in June
Grinnell, IA
- Average UV index in June: 6
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in June
Grinnell, IA
- Average cloud cover in June: 34
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility in June
Grinnell, IA
- Average visibility in June: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
