September weather forecast
Halfway, MO

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Weather in September

The first month of the autumn, September, is still a warm month in Halfway, Missouri, with an average temperature varying between 59.9°F (15.5°C) and 79.9°F (26.6°C).

Temperature

During the shift to September, a minor reduction in average high-temperature is observed, shifting from a hot 86.5°F (30.3°C) in August to a warm 79.9°F (26.6°C). The low-temperature averages to a mild 59.9°F (15.5°C) during the nights of September.

Humidity

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

Rainfall

In Halfway, in September, it is raining for 13.2 days, with typically 2.17" (55mm) of accumulated precipitation. In Halfway, during the entire year, the rain falls for 150.7 days and collects up to 33.35" (847mm) of precipitation.

Snowfall

In Halfway, snow does not fall in June through September.

Daylight

In Halfway, the average length of the day in September is 12h and 25min.
On the first day of September, sunrise is at 6:43 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:57 pm CDT.

Sunshine

The average sunshine in September is 9.5h.

UV index

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high UV index of 5 in September translates into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Experience reduced UV exposure by about half when donning a wide-brim hat.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures?

An average high-temperature, in September, in Halfway, is 79.9°F (26.6°C) and the average low-temperature is 59.9°F (15.5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, is calculated to be 98.6°F (37°C).

What is the average humidity in September?

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

How many days does it rain in September?

In Halfway, in September, it is raining for 13.2 days, with typically 2.17" (55mm) of accumulated precipitation.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

In Halfway, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Halfway have in September?

The average day length in September in Halfway is 12h and 25min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:43 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:57 pm CDT.

How many hours of sunshine does Halfway have in September?

In September, the average sunshine duration is 9.5h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from 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
Halfway, MO

Average temperature in September - Halfway, MO
  • Average high temperature in September: 79.9°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 (40.3°F).

  • Average low temperature in September: 59.9°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).

Average pressure in September
Halfway, MO

Average pressure in September - Halfway, MO
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are April and June (29.93"Hg).

Average wind speed in September
Halfway, MO

Average wind speed in September - Halfway, MO
  • Average wind speed in September: 6.8mph

The windiest month (with the highest average wind speed) is March (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).

Average humidity in September
Halfway, MO

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

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are July, August, October and November (73%).

Average rainfall in September
Halfway, MO

Average rainfall in September - Halfway, MO
  • Average rainfall in September: 2.17"

The wettest month (with the highest rainfall) is May (5.04").
The driest month (with the least rainfall) is January (1.61").

Average rainfall days in September
Halfway, MO

Average rainfall days in September - Halfway, MO
  • Average rainfall days in September: 13.2 days

The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is December (6.9 days).

Average snowfall in September
Halfway, MO

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

The month with the highest snowfall is February (2.91").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Halfway, MO

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

The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in September: 9h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

Average sunshine days in September
Halfway, MO

Average sunshine days in September - Halfway, MO
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (10.8 days).

Average UV index in September
Halfway, MO

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

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

Average cloud cover in September
Halfway, MO

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

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 27).

Average visibility in September
Halfway, MO

Average visibility in September - Halfway, 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).

Halfway, Missouri, USA

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