September weather forecast
Arrow Rock, MO

Share

Weather in September

The first month of the autumn, September, is also a moderately hot month in Arrow Rock, Missouri, with an average temperature fluctuating between 79.3°F (26.3°C) and 59°F (15°C).

Temperature

Arrow Rock's progression into September involves a minor drop in the average high-temperature, slightly receding from a warm 85.5°F (29.7°C) in August to a still moderately hot 79.3°F (26.3°C). Arrow Rock, during the month of September, experiences an average low-temperature of 59°F (15°C).

Humidity

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

Rainfall

In Arrow Rock, in September, it is raining for 11.3 days, with typically 2.28" (58mm) of accumulated precipitation. In Arrow Rock, Missouri, during the entire year, the rain falls for 135.7 days and collects up to 28.11" (714mm) of precipitation.

Snowfall

April, June through September are months without snowfall.

Daylight

In Arrow Rock, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:41 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:55 pm CDT.

Sunshine

In Arrow Rock, the average sunshine in September is 9.5h.

UV index

In Arrow Rock, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: In September, an average UV index of 5 transforms into the following instructions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
[Resources]

Frequently asked questions

What is the temperature in September in Arrow Rock?

During September, Arrow Rock experiences an average high-temperature of 79.3°F (26.3°C) and a low-temperature of 59°F (15°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in August is evaluated at 96.8°F (36°C).

What is the average humidity in September in Arrow Rock?

In September, the average relative humidity is 74%.

How much does it rain in Arrow Rock in September?

In Arrow Rock, in September, it is raining for 11.3 days, with typically 2.28" (58mm) of accumulated precipitation.

When it does not snow in Arrow Rock?

In Arrow Rock, snow does not fall in April, June through September.

Does it snow in Arrow Rock in September?

In Arrow Rock, Missouri, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Arrow Rock have in September?

The average day length in September in Arrow Rock, Missouri, is 12h and 26min.

When is the sunrise / sunset in September in Arrow Rock?

On the first day of September in Arrow Rock, Missouri, sunrise is at 6:41 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:55 pm CDT.

How long on average sun shines in September in Arrow Rock?

The average sunshine duration in September in Arrow Rock is 9.5h.

What is the UV index intensity in September in Arrow Rock?

In September, the average daily maximum UV index in Arrow Rock is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
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
Arrow Rock, MO

Average temperature in September - Arrow Rock, MO
  • Average high temperature in September: 79.3°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in September: 59°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

[Resources]

Average pressure in September
Arrow Rock, MO

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

[Resources]

Average wind speed in September
Arrow Rock, MO

Average wind speed in September - Arrow Rock, MO
  • Average wind speed in September: 6.9mph

The windiest month (with the highest average wind speed) is March (9.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

[Resources]

Average humidity in September
Arrow Rock, MO

Average humidity in September - Arrow Rock, MO
  • Average humidity in September: 74%

The months with the highest relative humidity are May and June (78%).
The month with the lowest relative humidity is October (71%).

[Resources]

Average rainfall in September
Arrow Rock, MO

Average rainfall in September - Arrow Rock, MO
  • Average rainfall in September: 2.28"

The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is January (1.18").

[Resources]

Average rainfall days in September
Arrow Rock, MO

Average rainfall days in September - Arrow Rock, MO
  • Average rainfall days in September: 11.3 days

The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (5.6 days).

[Resources]

Average snowfall in September
Arrow Rock, MO

Average snowfall in September - Arrow Rock, MO
  • Average snowfall in September: 0"

The month with the highest snowfall is February (2.95").
The months with the least snowfall are April, June, July, August and September (0").

[Resources]

Average snowfall days in September
Arrow Rock, MO

Average snowfall days in September - Arrow Rock, MO
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (5.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Arrow Rock, MO

Average daylight in September / Average sunshine in September - Arrow Rock, 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 30min).

  • Average sunshine in September: 9h and 3min

The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).

[Resources]

Average sunshine days in September
Arrow Rock, MO

Average sunshine days in September - Arrow Rock, MO
  • Average sunshine days in September: 18 days

The months with the most sunshine days are January and December (20 days).
The month with the least sunshine days is May (12.3 days).

[Resources]

Average UV index in September
Arrow Rock, MO

Average UV index in September - Arrow Rock, 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).

[Resources]

Average cloud cover in September
Arrow Rock, MO

Average cloud cover in September - Arrow Rock, MO
  • Average cloud cover in September: 29

The months with the most cloud cover are January, February and March (Cloud cover 48).
The months with the least cloud cover are June, July and August (Cloud cover 28).

[Resources]

Average visibility in September
Arrow Rock, MO

Average visibility in September - Arrow Rock, 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).

[Resources]

Arrow Rock, Missouri, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location