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
In Halcyon, the average temperatures in September are the highest, with a peak at 79.5°F (26.4°C) and a low of 59.9°F (15.5°C).Humidity
In September, the average relative humidity is 59%.Rainfall
In Halcyon, in September, during 1.8 rainfall days, 0.08" (2mm) of precipitation is typically accumulated. In Halcyon, California, during the entire year, the rain falls for 47.6 days and collects up to 6.93" (176mm) of precipitation.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:28 pm. On the last day of September, in Halcyon, sunrise is at 6:57 am and sunset at 6:47 pm PDT.
Sunshine
In September, the average sunshine in Halcyon is 11.3h.UV index
In September, the average daily maximum UV index in Halcyon 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 maximum UV index of 5 translates into these guidelines:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Frequently asked questions
What are the warmest months in Halcyon?
What are the temperatures in Halcyon in September?
What is the average humidity in September in Halcyon?
How much does it rain in Halcyon in September?
How many hours of daylight does Halcyon have in September?
When are sunrise and sunset in September in Halcyon?
How many hours of sunshine does Halcyon have in September?
How high is the UV index in September in Halcyon?
Average temperature in September
Halcyon, CA
- Average high temperature in September: 79.5°F
The warmest month (with the highest average high temperature) is September (79.5°F).
The month with the lowest average high temperature is December (61.2°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is September (59.9°F).
The coldest month (with the lowest average low temperature) is February (46°F).
Average pressure in September
Halcyon, CA
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed in September
Halcyon, CA
- Average wind speed in September: 5.8mph
The windiest months (with the highest average wind speed) are April and May (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in September
Halcyon, CA
- Average humidity in September: 59%
The month with the highest relative humidity is March (68%).
The month with the lowest relative humidity is October (58%).
Average rainfall in September
Halcyon, CA
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is March (1.61").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in September
Halcyon, CA
- Average rainfall days in September: 1.8 days
The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is August (0.8 days).
Average daylight in September /
Average sunshine in September
Halcyon, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 11h and 2min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).
Average sunshine days in September
Halcyon, CA
- Average sunshine days in September: 28.2 days
The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is February (21 days).
Average UV index in September
Halcyon, CA
- Average UV index in September: 5
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in September
Halcyon, CA
- Average cloud cover in September: 7
The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in September
Halcyon, 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).
Halcyon, California, USA
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