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
Blue Lake's shift from August to September is accompanied by an average high-temperature of a still agreeable 68°F (20°C), a slight deviation from 68.9°F (20.5°C). In September, Blue Lake reports a consistent average low-temperature of 51.1°F (10.6°C) during the nights.Humidity
September and October, with an average relative humidity of 76%, are the least humid months.Rainfall
In Blue Lake, during September, the rain falls for 4.6 days and regularly aggregates up to 0.83" (21mm) of precipitation. In Blue Lake, during the entire year, the rain falls for 114.9 days and collects up to 31.61" (803mm) of precipitation.Snowfall
In Blue Lake, snow does not fall in January, March through December.Daylight
In September, the average length of the day is 12h and 27min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:47 pm. On the last day of September, in Blue Lake, sunrise is at 7:12 am and sunset at 6:58 pm PDT.
Sunshine
In Blue Lake, the average sunshine in September is 10.2h.UV index
In Blue Lake, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Around midday, solar radiation is most harmful; hence, exposure should be limited. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Frequently asked questions
What are September temperatures in Blue Lake?
What is the least humid month in Blue Lake?
What is the average humidity in September in Blue Lake?
How many days does it rain in September in Blue Lake?
When it does not snow in Blue Lake?
What is the average length of the day in September in Blue Lake?
When is the sunrise / sunset in September in Blue Lake?
How many hours of sunshine does Blue Lake have in September?
What is the UV index reading in September in Blue Lake?
Average temperature in September
Blue Lake, CA
- Average high temperature in September: 68°F
The warmest month (with the highest average high temperature) is August (68.9°F).
The month with the lowest average high temperature is December (52.7°F).
- Average low temperature in September: 51.1°F
The month with the highest average low temperature is August (51.4°F).
The coldest month (with the lowest average low temperature) is February (41.7°F).
Average pressure in September
Blue Lake, CA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).
Average wind speed in September
Blue Lake, CA
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Blue Lake, CA
- Average humidity in September: 76%
The month with the highest relative humidity is March (82%).
The months with the lowest relative humidity are September and October (76%).
Average rainfall in September
Blue Lake, CA
- Average rainfall in September: 0.83"
The wettest month (with the highest rainfall) is December (5.87").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in September
Blue Lake, CA
- Average rainfall days in September: 4.6 days
The month with the highest number of rainy days is March (16.8 days).
The months with the least rainy days are July and August (2.2 days).
Average snowfall in September
Blue Lake, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.39").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Blue Lake, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Blue Lake, CA
- Average daylight in September: 12h and 2min
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 18min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).
Average sunshine days in September
Blue Lake, CA
- Average sunshine days in September: 24.7 days
The months with the most sunshine days are July and August (28 days).
The month with the least sunshine days is March (12.5 days).
Average UV index in September
Blue Lake, CA
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in September
Blue Lake, CA
- Average cloud cover in September: 19
The month with the most cloud cover is March (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in September
Blue Lake, CA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Blue Lake, California, USA
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