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
The advent of September reveals an average high-temperature of an agreeable 72.1°F (22.3°C), showing minimal difference from the prior month. Throughout the September nights, Westlake encounters a low-temperature of 59.5°F (15.3°C).Humidity
In September, the average relative humidity in Westlake is 77%.Rainfall
In Westlake, during September, the rain falls for 14.2 days and regularly aggregates up to 1.77" (45mm) of precipitation. Throughout the year, there are 161.8 rainfall days, and 24.96" (634mm) of precipitation is accumulated.Snowfall
In Westlake, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:54 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:10 pm EDT.
Sunshine
In Westlake, the average sunshine in September is 8.4h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: A typical high UV index of 4 in September suggests the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
What is the usual temperature for Westlake in September?
What is the average humidity in September in Westlake?
How many days does it rain in September in Westlake?
When it does not snow in Westlake?
How many hours of daylight does Westlake have in September?
When are sunrise and sunset in September in Westlake?
How many hours of sunshine does Westlake have in September?
How high is the UV index in September in Westlake?
Average temperature in September
Westlake, OH
- Average high temperature in September: 72.1°F
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in September: 59.5°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Westlake, OH
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Westlake, OH
- Average wind speed in September: 8.2mph
The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in September
Westlake, OH
- Average humidity in September: 77%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are July, August, October and November (76%).
Average rainfall in September
Westlake, OH
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is June (3.15").
The driest month (with the least rainfall) is February (1.38").
Average rainfall days in September
Westlake, OH
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is August (17.1 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in September
Westlake, OH
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.66").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Westlake, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Westlake, OH
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Westlake, OH
- Average sunshine days in September: 12.4 days
The month with the most sunshine days is July (12.8 days).
The month with the least sunshine days is February (8.7 days).
Average UV index in September
Westlake, OH
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Westlake, OH
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Westlake, OH
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Westlake, Ohio, USA
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