September weather forecast and climate
Marysville, CA

Weather in September

September, the first month of the autumn, in Marysville, is still a tropical month, with average temperature fluctuating between 60.4°F (15.8°C) and 89.4°F (31.9°C).

Temperature

In September, the average high-temperature slightly decreases, from a torrid 95.2°F (35.1°C) in August, to a tropical 89.4°F (31.9°C). In September, in Marysville, the average low-temperature is 60.4°F (15.8°C).

Humidity

Months with the lowest humidity in Marysville are July and September, with an average relative humidity of 38%.

Rainfall

In Marysville, California, it is raining for 1.9 days, with typically 0.16" (4mm) of accumulated precipitation. In Marysville, California, during the entire year, the rain falls for 69.8 days and collects up to 10.79" (274mm) of precipitation.

Snowfall

In Marysville, California, snow does not fall in February through December.

Daylight

In Marysville, the average length of the day is 12.4h.

Sunshine

The average sunshine is 11.2h.

UV index

In Marysville, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.
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FAQ

What is the temperature in September in Marysville?

In Marysville, California, in September, the average high-temperature is 89.4°F (31.9°C), and the average low-temperature is 60.4°F (15.8°C).

What is the least humid month in Marysville?

July and September, with an average relative humidity of 38%, are the least humid months in Marysville, California.

What is the average humidity in September in Marysville?

The average relative humidity in September in Marysville, California, is 38%.

How much does it rain in Marysville in September?

In Marysville, California, during September, the rain falls for 1.9 days and regularly aggregates up to 0.16" (4mm) of precipitation.

When it does not snow in Marysville?

In Marysville snow does not fall in February through December.

How many hours of daylight does Marysville have in September?

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

How long on average sun shines in September in Marysville?

The average sunshine in September in Marysville is 11.2h.

What is the UV index intensity in September in Marysville?

In September, the average daily maximum UV index in Marysville is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in September
Marysville, CA

Average temperature in September - Marysville, CA
  • Average high temperature in September: 89.4°F

The warmest month (with the highest average high temperature) is July (96.4°F).
The month with the lowest average high temperature is December (54.5°F).

  • Average low temperature in September: 60.4°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is December (41°F).

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Average pressure in September
Marysville, CA

Average pressure in September - Marysville, CA
  • Average pressure in September: 29.92"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.9").

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Average wind speed in September
Marysville, CA

Average wind speed in September - Marysville, CA
  • Average wind speed in September: 4.7mph

The windiest month (with the highest average wind speed) is March (6.1mph).
The calmest month (with the lowest average wind speed) is September (4.7mph).

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Average humidity in September
Marysville, CA

Average humidity in September - Marysville, CA
  • Average humidity in September: 38%

The month with the highest relative humidity is March (74%).
Months with the lowest relative humidity are July and September (38%).

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Average rainfall in September
Marysville, CA

Average rainfall in September - Marysville, CA
  • Average rainfall in September: 0.16"

The wettest month (with the highest rainfall) is March (2.17").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in September
Marysville, CA

Average rainfall days in September - Marysville, CA
  • Average rainfall days in September: 1.9 days

The month with the highest number of rainy days is March (13.5 days).
The month with the least rainy days is July (0.9 days).

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Average snowfall in September
Marysville, CA

Average snowfall in September - Marysville, CA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.2").
Months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Marysville, CA

Average snowfall days in September - Marysville, CA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (0.1 days).
Months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in September /
Average sunshine in September
Marysville, CA

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

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 11.2h

The month with the most sunshine is July (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 5.7h).

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Average sunshine days in September
Marysville, CA

Average sunshine days in September - Marysville, CA
  • Average sunshine days in September: 27.4 days

The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is March (16.8 days).

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Average UV index in September
Marysville, CA

Average UV index in September - Marysville, CA
  • Average UV index in September: 5

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Marysville, CA

Average cloud cover in September - Marysville, CA
  • Average cloud cover in September: 8

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in September
Marysville, CA

Average visibility in September - Marysville, CA
  • Average visibility in September: 6mi

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

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