September weather forecast and climate
Old Station, CA

Weather in September

The first month of the autumn, September, is still a warm month in Old Station, California, with average temperature ranging between min 44.8°F (7.1°C) and max 73.6°F (23.1°C).

Temperature

In September, the average high-temperature slightly decreases, from 80.4°F (26.9°C) in August, to a still moderately hot 73.6°F (23.1°C). In Old Station, in September, the average low-temperature is 44.8°F (7.1°C).

Humidity

In Old Station, the average relative humidity in September is 47%.

Rainfall

In Old Station, California, during September, the rain falls for 4.1 days and regularly aggregates up to 0.51" (13mm) of precipitation. In Old Station, during the entire year, the rain falls for 83.9 days and collects up to 26.61" (676mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall in Old Station. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.24" (6mm) of snow. In Old Station, during the entire year, snow falls for 62.6 days, and aggregates up to 99.53" (2528mm) of snow.

Daylight

In Old Station, the average length of the day in September is 12.4h.

Sunshine

In September, the average sunshine in Old Station is 11.1h.

UV index

The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 3 in September transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
[Resources]

FAQ

What is the temperature in September in Old Station?

In September, the average high-temperature is 73.6°F (23.1°C), and the average low-temperature is 44.8°F (7.1°C).

What is the average humidity in September in Old Station?

The average relative humidity in September is 47%.

How much does it rain in Old Station in September?

In Old Station, California, during September, the rain falls for 4.1 days and regularly aggregates up to 0.51" (13mm) of precipitation.

When does it start to snow in Old Station?

September is the first month it typically snows in Old Station, California. Throughout September, in the average 0.3 snowfall days, it receives 0.24" (6mm) of snow.

What is the average length of the day in September in Old Station?

The average length of the day in September in Old Station, California, is 12.4h.

How long on average sun shines in September in Old Station?

In Old Station, California, the average sunshine in September is 11.1h.

What is the UV index intensity in September in Old Station?

In Old Station, California, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in September
Old Station, CA

Average temperature in September - Old Station, CA
  • Average high temperature in September: 73.6°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (39.4°F).

  • Average low temperature in September: 44.8°F

The month with the highest average low temperature is July (50.2°F).
The coldest month (with the lowest average low temperature) is December (24.8°F).

[Resources]

Average pressure in September
Old Station, CA

Average pressure in September - Old Station, CA
  • Average pressure in September: 29.94"

The month with the highest atmospheric pressure is January (30.18").
Months with the lowest atmospheric pressure are June and August (29.91").

[Resources]

Average wind speed in September
Old Station, CA

Average wind speed in September - Old Station, CA
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is March (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

[Resources]

Average humidity in September
Old Station, CA

Average humidity in September - Old Station, CA
  • Average humidity in September: 47%

The month with the highest relative humidity is March (83%).
Months with the lowest relative humidity are July and August (42%).

[Resources]

Average rainfall in September
Old Station, CA

Average rainfall in September - Old Station, CA
  • Average rainfall in September: 0.51"

The wettest month (with the highest rainfall) is March (4.76").
The driest month (with the least rainfall) is August (0.31").

[Resources]

Average rainfall days in September
Old Station, CA

Average rainfall days in September - Old Station, CA
  • Average rainfall days in September: 4.1 days

The month with the highest number of rainy days is April (11.2 days).
The month with the least rainy days is August (3.2 days).

[Resources]

Average snowfall in September
Old Station, CA

Average snowfall in September - Old Station, CA
  • Average snowfall in September: 0.24"

Months with the highest snowfall are February and March (21.85").
Months with the least snowfall are July and August (0").

[Resources]

Average snowfall days in September
Old Station, CA

Average snowfall days in September - Old Station, CA
  • Average snowfall days in September: 0.3 days

The month with the highest number of snowfall days is March (13.3 days).
Months with the least snowfall days are July and August (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Old Station, CA

Average daylight in September / Average sunshine in September - Old Station, 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: 11.1h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.1h).

[Resources]

Average sunshine days in September
Old Station, CA

Average sunshine days in September - Old Station, CA
  • Average sunshine days in September: 24.8 days

The month with the most sunshine days is August (26.6 days).
The month with the least sunshine days is March (12.1 days).

[Resources]

Average UV index in September
Old Station, CA

Average UV index in September - Old Station, CA
  • Average UV index in September: 3

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are February and November (UV index 1).

[Resources]

Average cloud cover in September
Old Station, CA

Average cloud cover in September - Old Station, CA
  • Average cloud cover in September: 12

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 7).

[Resources]

Average visibility in September
Old Station, CA

Average visibility in September - Old Station, CA
  • Average visibility in September: 6mi

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

[Resources]