September weather forecast
Spokane, MO

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Weather in September

September, the first month of the autumn in Spokane, is also a moderately hot month, with temperature in the range of an average high of 79.9°F (26.6°C) and an average low of 59.7°F (15.4°C).

Temperature

The average high-temperature shows a slight dip in September, from August's tropical 87.1°F (30.6°C) to a warm 79.9°F (26.6°C). The average low-temperature during September nights is a mild 59.7°F (15.4°C).

Humidity

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

Rainfall

In September, the rain falls for 12.9 days. Throughout September, 2.13" (54mm) of precipitation is accumulated. In Spokane, during the entire year, the rain falls for 151.2 days and collects up to 33.62" (854mm) of precipitation.

Snowfall

In Spokane, snow does not fall in June through October.

Daylight

The average length of the day in September in Spokane is 12h and 24min.
On the first day of September, sunrise is at 6:44 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 9.3h.

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 exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 5 in September interprets into the following advice:
Adopt protective measures - It is advised to guard against sun damage. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

An average high-temperature, in September, in Spokane, is 79.9°F (26.6°C) and the average low-temperature is 59.7°F (15.4°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 98.6°F (37°C).

What is the average humidity in September?

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

How much does it rain in September?

In September, in Spokane, the rain falls for 12.9 days. Throughout September, 2.13" (54mm) of precipitation is accumulated.

When it does not snow?

In Spokane, snow does not fall in June through October.

How many hours of daylight does Spokane have in September?

The average day length in September is 12h and 24min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:44 am and sunset at 7:41 pm. On the last day of the month, in Spokane, sunrise is at 7:08 am and sunset at 6:57 pm CDT.

How long on average sun shines in September?

In Spokane, the average sunshine duration in September is 9.3h.

How high is the UV index in September in Spokane?

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health risk 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
Spokane, MO

Average temperature in September - Spokane, MO
  • Average high temperature in September: 79.9°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (41.9°F).

  • Average low temperature in September: 59.7°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 (26.4°F).

Average pressure in September
Spokane, MO

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

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

Average wind speed in September
Spokane, MO

Average wind speed in September - Spokane, MO
  • Average wind speed in September: 6.3mph

The windiest months (with the highest average wind speed) are January, February and March (9.3mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).

Average humidity in September
Spokane, MO

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

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

Average rainfall in September
Spokane, MO

Average rainfall in September - Spokane, MO
  • Average rainfall in September: 2.13"

The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is January (1.65").

Average rainfall days in September
Spokane, MO

Average rainfall days in September - Spokane, MO
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in September
Spokane, MO

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

The month with the highest snowfall is January (2.36").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in September
Spokane, MO

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

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

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

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

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

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

Average sunshine days in September
Spokane, MO

Average sunshine days in September - Spokane, MO
  • Average sunshine days in September: 14.6 days

The month with the most sunshine days is December (21 days).
The month with the least sunshine days is July (10.7 days).

Average UV index in September
Spokane, MO

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

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in September
Spokane, MO

Average cloud cover in September - Spokane, MO
  • Average cloud cover in September: 31

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in September
Spokane, MO

Average visibility in September - Spokane, 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).

Spokane, Missouri, USA

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