September weather forecast
Palmyra, MO

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Palmyra, Missouri, with temperature in the range of an average high of 78.3°F (25.7°C) and an average low of 58.1°F (14.5°C).

Temperature

September ushers in a minute temperature change, with average high-temperatures reducing from August's 84.2°F (29°C) to a still moderately hot 78.3°F (25.7°C). Palmyra records an average low of 58.1°F (14.5°C) throughout the nights in September.

Humidity

In Palmyra, the average relative humidity in September is 74%.

Rainfall

In September, in Palmyra, the rain falls for 10.7 days. Throughout September, 2.24" (57mm) of precipitation is accumulated. In Palmyra, Missouri, during the entire year, the rain falls for 138.1 days and collects up to 26.97" (685mm) of precipitation.

Snowfall

May through October are months without snowfall in Palmyra.

Daylight

In Palmyra, the average length of the day in September is 12h and 26min.
On the first day of September in Palmyra, sunrise is at 6:34 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:49 pm CDT.

Sunshine

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

UV index

In September, the average daily maximum UV index in Palmyra, Missouri, is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: In September, the maximum UV index of 5 transforms into these recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
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Frequently asked questions

What are the temperatures in Palmyra in September?

The average high-temperature, in September, in Palmyra, is 78.3°F (25.7°C), while the average low-temperature is 58.1°F (14.5°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, in August is appraised at 93.2°F (34°C).

What is the average humidity in September in Palmyra?

In September, the average relative humidity in Palmyra, Missouri, is 74%.

How many days does it rain in September in Palmyra?

In September, the rain falls for 10.7 days. Throughout September, 2.24" (57mm) of precipitation is accumulated.

When it does not snow in Palmyra?

In Palmyra, Missouri, snow does not fall in May through October.

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

In September, the average day length in Palmyra, Missouri, is 12h and 26min.

What time are sunrise and sunset in September in Palmyra?

On the first day of September, sunrise is at 6:34 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:49 pm CDT.

How long on average sun shines in September in Palmyra?

In September, the average sunshine duration is 9.4h.

What is the UV index intensity in September in Palmyra?

In Palmyra, Missouri, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Palmyra, MO

Average temperature in September - Palmyra, MO
  • Average high temperature in September: 78.3°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (33.6°F).

  • Average low temperature in September: 58.1°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (21°F).

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Average pressure in September
Palmyra, MO

Average pressure in September - Palmyra, MO
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in September
Palmyra, MO

Average wind speed in September - Palmyra, MO
  • Average wind speed in September: 7.1mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).

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Average humidity in September
Palmyra, MO

Average humidity in September - Palmyra, MO
  • Average humidity in September: 74%

The months with the highest relative humidity are May, June and July (80%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in September
Palmyra, MO

Average rainfall in September - Palmyra, MO
  • Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is January (1.3").

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Average rainfall days in September
Palmyra, MO

Average rainfall days in September - Palmyra, MO
  • Average rainfall days in September: 10.7 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (5.4 days).

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Average snowfall in September
Palmyra, MO

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

The month with the highest snowfall is January (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Palmyra, MO

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

The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Palmyra, MO
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

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Average sunshine days in September
Palmyra, MO

Average sunshine days in September - Palmyra, MO
  • Average sunshine days in September: 18.1 days

The months with the most sunshine days are January and December (19.4 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index in September
Palmyra, MO

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

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

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Average cloud cover in September
Palmyra, MO

Average cloud cover in September - Palmyra, MO
  • Average cloud cover in September: 29

The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in September
Palmyra, MO

Average visibility in September - Palmyra, MO
  • Average visibility in September: 6mi

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

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Palmyra, Missouri, USA

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