September weather forecast and climate
Spokane, MO

The first month of the autumn, September, is also a moderately hot month in Spokane, Missouri, with average temperature varying between 59.7°F (15.4°C) and 79.9°F (26.6°C).

Temperature

In Spokane, the average high-temperature marginally drops, from a hot 87.1°F (30.6°C) in August, to a warm 79.9°F (26.6°C). In Spokane, Missouri, the average low-temperature is 59.7°F (15.4°C).

Humidity

In Spokane, the average relative humidity is 74%.

Rainfall

In Spokane, during 12.9 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. In Spokane, Missouri, 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

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

Sunshine

The average sunshine in September is 9.3h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 5 in September transform into the following instructions:
Take precautions - Protection against sunburn is recommended. 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.

What is the temperature in September in Spokane?

In September, in Spokane, Missouri, the average high-temperature is 79.9°F (26.6°C), and the average low-temperature is 59.7°F (15.4°C).

What is the average humidity in September in Spokane?

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

How much does it rain in Spokane in September?

In Spokane, during September, the rain falls for 12.9 days and regularly aggregates up to 2.13" (54mm) of precipitation.

When it does not snow in Spokane?

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

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

The average length of the day in September in Spokane, Missouri, is 12.4h.

How long on average sun shines in September in Spokane?

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

What is the UV index reading in September in Spokane?

The average daily maximum UV index in September in Spokane, Missouri, is 5. A UV Index of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV radiation.
Average temperature in September - Spokane, MO
  • Average high temperature in September: 26.6°C

The warmest month (with the highest average high temperature) is July (31.5°C).
The month with the lowest average high temperature is January (5.5°C).

  • Average low temperature in September: 15.4°C

The month with the highest average low temperature is July (20.2°C).
The coldest month (with the lowest average low temperature) is January (-3.1°C).

Average pressure in September - Spokane, MO
  • Average pressure in September: 1016.8mbar

The month with the highest atmospheric pressure is January (1021.7mbar).
The month with the lowest atmospheric pressure is June (1013.6mbar).

Average wind speed in September - Spokane, MO
  • Average wind speed in September: 10.2km/h

The windiest months (with the highest average wind speed) are January and March (15km/h).
The calmest month (with the lowest average wind speed) is July (9.4km/h).

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

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

Average rainfall in September - Spokane, MO
  • Average rainfall in September: 54mm

The wettest month (with the highest rainfall) is May (114mm).
The driest month (with the least rainfall) is January (42mm).

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: 0mm

The month with the highest snowfall is January (60mm).
Months with the least snowfall are June, July, August, September and October (0mm).

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).
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: 12.4h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.7h).

  • Average sunshine in September: 9.3h

The month with the most sunshine is June (Average sunshine: 10.6h).
The month with the least sunshine is January (Average sunshine: 5.1h).

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: 5

The month with the highest UV index is June (UV index 7).
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: 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: 9km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).