September weather forecast
Potosi, MO

Weather in September

September, the first month of the autumn, in Potosi, is also a moderately hot month, with average temperature varying between 58.6°F (14.8°C) and 80.1°F (26.7°C).

Temperature

In September, the average high-temperature marginally drops, from a tropical 86.7°F (30.4°C) in August, to a warm 80.1°F (26.7°C). The average low-temperature, in Potosi, is 58.6°F (14.8°C).

Humidity

In Potosi, the average relative humidity is 75%.

Rainfall

Months with the least rainfall are February, September and November Rain falls for 12.2 days and accumulates 1.73" (44mm) of rain.

Snowfall

In Potosi snow does not fall in April through October.

Daylight

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

Sunshine

In September, the average sunshine in Potosi, Missouri, is 9.4h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
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. 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 average humidity in September in Potosi?

In Potosi, Missouri, the average relative humidity in September is 75%.

What is the driest month in Potosi?

February, September and November are months with the least rain when the rain falls for 12.2 days and typically aggregates up to 1.73" (44mm) of rain.

How many days does it rain in September in Potosi?

In Potosi, Missouri, in September, it is raining for 12.2 days, with typically 1.73" (44mm) of accumulated precipitation.

When it does not snow in Potosi?

April through October are months without snowfall in Potosi.

What is the average length of the day in September in Potosi?

The average length of the day in September in Potosi is 12.4h.

How long on average sun shines in September in Potosi?

The average sunshine in September in Potosi is 9.4h.

How high is the UV index in September in Potosi?

In Potosi, Missouri, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in September
Potosi, MO

Average temperature in September - Potosi, MO
  • Average high temperature in September: 80.1°F

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (39.6°F).

  • Average low temperature in September: 58.6°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

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Average pressure in September
Potosi, MO

Average pressure in September - Potosi, MO
  • Average pressure in September: 30.02"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.92").

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Average wind speed in September
Potosi, MO

Average wind speed in September - Potosi, MO
  • Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in September
Potosi, MO

Average humidity in September - Potosi, MO
  • Average humidity in September: 75%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in September
Potosi, MO

Average rainfall in September - Potosi, MO
  • Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is May (3.03").
The driest months (with the least rainfall) are February, September and November (1.73").

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Average rainfall days in September
Potosi, MO

Average rainfall days in September - Potosi, MO
  • Average rainfall days in September: 12.2 days

The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (7.2 days).

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Average snowfall in September
Potosi, MO

Average snowfall in September - Potosi, MO
  • Average snowfall in September: 0"

The month with the highest snowfall is February (2.8").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Potosi, MO

Average snowfall days in September - Potosi, MO
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (5.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Potosi, MO

Average daylight in September / Average sunshine in September - Potosi, MO
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 9.4h

The month with the most sunshine is June (Average sunshine: 10.4h).
The month with the least sunshine is January (Average sunshine: 4.7h).

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Average sunshine days in September
Potosi, MO

Average sunshine days in September - Potosi, MO
  • Average sunshine days in September: 15.6 days

The month with the most sunshine days is October (21 days).
The month with the least sunshine days is July (12.3 days).

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Average UV index in September
Potosi, MO

Average UV index in September - Potosi, MO
  • Average UV index in September: 5

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Potosi, MO

Average cloud cover in September - Potosi, MO
  • Average cloud cover in September: 32

Months with the most cloud cover are January, February and March (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in September
Potosi, MO

Average visibility in September - Potosi, MO
  • Average visibility in September: 5mi

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

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