September weather forecast and climate
Mariposa, CA

Weather in September

The first month of the autumn, September, is also a moderately hot month in Mariposa, California, with average temperature ranging between max 81°F (27.2°C) and min 54.7°F (12.6°C).

Temperature

In Mariposa, the average high-temperature in September slightly decreases, from a tropical 86.5°F (30.3°C) in August, to a moderately hot 81°F (27.2°C). The average low-temperature, is 54.7°F (12.6°C).

Humidity

In September, the average relative humidity is 35%.

Rainfall

In September, in Mariposa, the rain falls for 3 days. Throughout September, 0.28" (7mm) of precipitation is accumulated. Throughout the year, there are 73.5 rainfall days, and 19.69" (500mm) of precipitation is accumulated.

Snowfall

In Mariposa, California, snow does not fall in May through October.

Daylight

The average length of the day in Mariposa is 12.4h.

Sunshine

The average sunshine is 11.2h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to the UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Mariposa?

The average high-temperature, in September, in Mariposa, California, is 81°F (27.2°C), while the average low-temperature is 54.7°F (12.6°C).

What is the average humidity in September in Mariposa?

In September, the average relative humidity in Mariposa is 35%.

How many days does it rain in September in Mariposa?

In Mariposa, California, during September, the rain falls for 3 days and regularly aggregates up to 0.28" (7mm) of precipitation.

When it does not snow in Mariposa?

In Mariposa, California, snow does not fall in May through October.

How many hours of daylight does Mariposa have in September?

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

How long on average sun shines in September in Mariposa?

In September, the average sunshine is 11.2h.

What is the UV index intensity in September in Mariposa?

In September, the average daily maximum UV index in Mariposa is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe exposure to the Sun's UV rays.

Average temperature in September
Mariposa, CA

Average temperature in September - Mariposa, CA
  • Average high temperature in September: 81°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is December (48.9°F).

  • Average low temperature in September: 54.7°F

The month with the highest average low temperature is July (58.8°F).
The coldest months (with the lowest average low temperature) are February and December (32.9°F).

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Average pressure in September
Mariposa, CA

Average pressure in September - Mariposa, CA
  • Average pressure in September: 29.93"

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
Mariposa, CA

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

The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest months (with the lowest average wind speed) are November and December (4.3mph).

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Average humidity in September
Mariposa, CA

Average humidity in September - Mariposa, CA
  • Average humidity in September: 35%

The month with the highest relative humidity is March (69%).
Months with the lowest relative humidity are July and August (32%).

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Average rainfall in September
Mariposa, CA

Average rainfall in September - Mariposa, CA
  • Average rainfall in September: 0.28"

The wettest month (with the highest rainfall) is February (3.54").
The driest month (with the least rainfall) is August (0.12").

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Average rainfall days in September
Mariposa, CA

Average rainfall days in September - Mariposa, CA
  • Average rainfall days in September: 3 days

The month with the highest number of rainy days is March (11.3 days).
The month with the least rainy days is August (2.1 days).

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Average snowfall in September
Mariposa, CA

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

The month with the highest snowfall is February (5.55").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Mariposa, CA

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

The month with the highest number of snowfall days is February (3.4 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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

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

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 11.2h

Months with the most sunshine are June and July (Average sunshine: 12.1h).
The month with the least sunshine is February (Average sunshine: 6.2h).

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Average sunshine days in September
Mariposa, CA

Average sunshine days in September - Mariposa, CA
  • Average sunshine days in September: 25.2 days

Months with the most sunshine days are August and October (26.5 days).
The month with the least sunshine days is March (18.3 days).

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Average UV index in September
Mariposa, CA

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

The month with the highest UV index is July (UV index 7).
Months with the lowest UV index are February, November and December (UV index 2).

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Average cloud cover in September
Mariposa, CA

Average cloud cover in September - Mariposa, CA
  • Average cloud cover in September: 7

The month with the most cloud cover is March (Cloud cover 31).
Months with the least cloud cover are July and August (Cloud cover 5).

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Average visibility in September
Mariposa, CA

Average visibility in September - Mariposa, 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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