Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September brings a minor shift in the average high-temperature, adjusting from 83.7°F (28.7°C) in August to a still warm 77.7°F (25.4°C). Throughout September, the average low-temperature in Crystal Lakes dips to a refreshing 58.8°F (14.9°C).Humidity
In Crystal Lakes, the average relative humidity in September is 76%.Rainfall
In Crystal Lakes, in September, during 12.4 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. Throughout the year, there are 138.2 rainfall days, and 27.72" (704mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Crystal Lakes, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:12 am and sunset at 7:00 pm CDT.
Sunshine
The average sunshine in September in Crystal Lakes is 9.3h.UV index
In Crystal Lakes, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. To protect against the Sun's most potent rays, avoid direct exposure around midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What is the usual temperature for Crystal Lakes in September?
What is the average humidity in September in Crystal Lakes?
How many days does it rain in September in Crystal Lakes?
When it does not snow in Crystal Lakes?
Does it snow in Crystal Lakes in September?
What is the average length of the day in September in Crystal Lakes?
When is the sunrise / sunset in September in Crystal Lakes?
How many hours of sunshine does Crystal Lakes have in September?
What is the UV index reading in September in Crystal Lakes?
Average temperature in September
Crystal Lakes, MO
- Average high temperature in September: 77.7°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in September: 58.8°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Crystal Lakes, MO
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Crystal Lakes, MO
- Average wind speed in September: 7mph
The windiest months (with the highest average wind speed) are March and April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
Crystal Lakes, MO
- Average humidity in September: 76%
The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are October and November (71%).
Average rainfall in September
Crystal Lakes, MO
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in September
Crystal Lakes, MO
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in September
Crystal Lakes, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Crystal Lakes, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Crystal Lakes, MO
- Average daylight in September: 12h and 2min
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 September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Crystal Lakes, MO
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is December (21 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in September
Crystal Lakes, MO
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Crystal Lakes, MO
- Average cloud cover in September: 29
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Crystal Lakes, MO
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Crystal Lakes, Missouri, USA
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