September weather forecast and climate
Blue Lake, CA

Weather in September

September, the first month of the autumn, in Blue Lake, is also an agreeable month, with average temperature fluctuating between 51.1°F (10.6°C) and 68°F (20°C).

Temperature

In September, the average high-temperature is relatively the same as in August - a still pleasant 68°F (20°C). In September, the average low-temperature is 51.1°F (10.6°C).

Humidity

September and October, with an average relative humidity of 76%, are the least humid months.

Rainfall

In Blue Lake, California,, during 4.6 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. Throughout the year, in Blue Lake, there are 114.9 rainfall days, and 31.61" (803mm) of precipitation is accumulated.

Snowfall

In Blue Lake, California, snow does not fall in January, March through December.

Daylight

In Blue Lake, California, the average length of the day in September is 12.4h.

Sunshine

In Blue Lake, the average sunshine in September is 10.2h.

UV index

In Blue Lake, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
[Resources]

FAQ

What are the least humid months in Blue Lake?

Months with the lowest humidity in Blue Lake are September and October, with an average relative humidity of 76%.

What is the average humidity in September in Blue Lake?

The average relative humidity in September is 76%.

How much does it rain in Blue Lake in September?

In September, in Blue Lake, California, the rain falls for 4.6 days. Throughout September, 0.83" (21mm) of precipitation is accumulated.

When it does not snow in Blue Lake?

In Blue Lake snow does not fall in January, March through December.

What is the average length of the day in September in Blue Lake?

In September, the average length of the day in Blue Lake is 12.4h.

How many hours of sunshine does Blue Lake have in September?

In Blue Lake, California, the average sunshine in September is 10.2h.

What is the UV index reading in September 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 risk from unprotected exposure to the UV radiation.

Average temperature in September
Blue Lake, CA

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).

[Resources]

Average pressure in September
Blue Lake, CA

Average pressure in September - Blue Lake, CA
  • Average pressure in September: 29.98"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is August (29.97").

[Resources]

Average wind speed in September
Blue Lake, CA

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).

[Resources]

Average humidity in September
Blue Lake, CA

Average humidity in September - Blue Lake, CA
  • Average humidity in September: 76%

The month with the highest relative humidity is March (82%).
Months with the lowest relative humidity are September and October (76%).

[Resources]

Average rainfall in September
Blue Lake, CA

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").

[Resources]

Average rainfall days in September
Blue Lake, CA

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).
Months with the least rainy days are July and August (2.2 days).

[Resources]

Average snowfall in September
Blue Lake, CA

Average snowfall in September - Blue Lake, CA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.39").
Months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

[Resources]

Average snowfall days in September
Blue Lake, CA

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).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Blue Lake, CA

Average daylight in September / Average sunshine in September - Blue Lake, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 10.2h

The month with the most sunshine is July (Average sunshine: 11.5h).
Months with the least sunshine are January and December (Average sunshine: 5.1).

[Resources]

Average sunshine days in September
Blue Lake, CA

Average sunshine days in September - Blue Lake, CA
  • Average sunshine days in September: 24.7 days

Months with the most sunshine days are July and August (28 days).
The month with the least sunshine days is March (12.5 days).

[Resources]

Average UV index in September
Blue Lake, CA

Average UV index in September - Blue Lake, CA
  • Average UV index in September: 4

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, March, November and December (UV index 3).

[Resources]

Average cloud cover in September
Blue Lake, CA

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).
Months with the least cloud cover are July and August (Cloud cover 18).

[Resources]

Average visibility in September
Blue Lake, CA

Average visibility in September - Blue Lake, CA
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
Months with the lowest visibility are July and August (5mi).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location