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
Castalia's warmest month, July, generally records average temperatures ranging from a high of 79°F (26.1°C) to a low of 62.2°F (16.8°C).Humidity
The average relative humidity in July is 84%.Rainfall
In July, the rain falls for 14.6 days. Throughout July, 2.91" (74mm) of precipitation is accumulated. Throughout the year, in Castalia, there are 131 rainfall days, and 27.91" (709mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in July is 15h and 0min.On the first day of the month, sunrise is at 5:31 am and sunset at 8:50 pm. On the last day of July, sunrise is at 5:57 am and sunset at 8:29 pm CDT.
Sunshine
The average sunshine in July is 9.6h.UV index
With an average maximum UV index of 6, July is the month with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.Note: In July, the maximum UV index of 6 suggests these recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the hottest?
What is the average July temperature in Castalia?
What is the average humidity in July?
How many days does it rain in July?
When it does not snow?
What is the average length of the day in July?
When are sunrise and sunset in July?
How many hours of sunshine does Castalia have in July?
What is the month with the highest UV index?
What is the UV index intensity in July?
Average temperature in July
Castalia, IA
- Average high temperature in July: 79°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in July: 62.2°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in July
Castalia, IA
- Average pressure in July: 29.96"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in July
Castalia, IA
- Average wind speed in July: 7mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in July
Castalia, IA
- Average humidity in July: 84%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (75%).
Average rainfall in July
Castalia, IA
- Average rainfall in July: 2.91"
The wettest month (with the highest rainfall) is June (4.33").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in July
Castalia, IA
- Average rainfall days in July: 14.6 days
The month with the highest number of rainy days is June (17.7 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in July
Castalia, IA
- Average snowfall in July: 0"
The month with the highest snowfall is February (5.16").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Castalia, IA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Castalia, IA
- Average daylight in July: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in July: 9h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in July
Castalia, IA
- Average sunshine days in July: 12.8 days
The month with the most sunshine days is September (17 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in July
Castalia, IA
- Average UV index in July: 6
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in July
Castalia, IA
- Average cloud cover in July: 35
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in July
Castalia, IA
- Average visibility in July: 5mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
Castalia, Iowa, USA
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