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 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
During the shift to September, Westmorland records a mild decrease in average high-temperature, moving from a scorching 107.2°F (41.8°C) in August to a very hot 100.2°F (37.9°C). Westmorland records a consistent low-temperature of 80.2°F (26.8°C) during September nights.Humidity
The average relative humidity in September is 26%.Rainfall
In Westmorland, during September, the rain falls for 4 days and regularly aggregates up to 0.43" (11mm) of precipitation. Throughout the year, there are 31.2 rainfall days, and 3.27" (83mm) of precipitation is accumulated.Daylight
In Westmorland, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:17 am and sunset at 7:06 pm. On the last day of September, in Westmorland, sunrise is at 6:36 am and sunset at 6:27 pm PDT.
Sunshine
The average sunshine in September is 10.2h.UV index
In September, the average daily maximum UV index is 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In September, an average UV index of 8 transforms into the following instructions:
Never be careless. Unprotected skin and eyes can be harmed swiftly. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does Westmorland have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Westmorland, CA
- Average high temperature in September: 100.2°F
The warmest months (with the highest average high temperature) are July and August (107.2°F).
The month with the lowest average high temperature is December (67.3°F).
- Average low temperature in September: 80.2°F
The month with the highest average low temperature is August (85.6°F).
The coldest months (with the lowest average low temperature) are January and December (50.4°F).
Average pressure in September
Westmorland, CA
- Average pressure in September: 29.81"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.78"Hg).
Average wind speed in September
Westmorland, CA
- Average wind speed in September: 6.5mph
The windiest months (with the highest average wind speed) are April and May (8.1mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).
Average humidity in September
Westmorland, CA
- Average humidity in September: 26%
The month with the highest relative humidity is December (40%).
The month with the lowest relative humidity is June (22%).
Average rainfall in September
Westmorland, CA
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is July (0.67").
The driest month (with the least rainfall) is May (0.04").
Average rainfall days in September
Westmorland, CA
- Average rainfall days in September: 4 days
The month with the highest number of rainy days is July (6.4 days).
The month with the least rainy days is May (0.8 days).
Average daylight in September /
Average sunshine in September
Westmorland, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 10h and 1min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in September
Westmorland, CA
- Average sunshine days in September: 24.5 days
The month with the most sunshine days is May (30.1 days).
The month with the least sunshine days is August (21.6 days).
Average UV index in September
Westmorland, CA
- Average UV index in September: 8
The months with the highest UV index are July and August (UV index 9).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in September
Westmorland, CA
- Average cloud cover in September: 7
The month with the most cloud cover is December (Cloud cover 18).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in September
Westmorland, CA
- 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).
Westmorland, California, USA
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