St. Louis
Missouri, USA
Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
St. Louis, MO

A beautiful twilight view of the Gateway Arch in St. Louis, Missouri, with a distant view of the city buildings mirrored in the waterfront
A beautiful twilight view of the Gateway Arch in St. Louis, Missouri, with a distant view of the city buildings mirrored in the waterfront
Octubre, like Septiembre, is an agreeable autumn month in St. Louis, with temperature in the range of an average low of 48.9°F (9.4°C) and an average high of 68.5°F (20.3°C).

Temperature

In Octubre, the average high-temperature in St. Louis drops, from a warm 80.2°F (26.8°C) in Septiembre, to an agreeable 68.5°F (20.3°C). The average low-temperature, in St. Louis, Missouri, is 48.9°F (9.4°C).

Humidity

In St. Louis, Missouri, the average relative humidity is 68.7%.

Rainfall

In Octubre, in St. Louis, the rain falls for 8.7 days. Throughout Octubre, 3.33" (84.6mm) of precipitation is accumulated. Throughout the year, in St. Louis, Missouri, there are 112.6 rainfall days, and 40.96" (1040.3mm) of precipitation is accumulated.

Snowfall

Mayo through Octubre are months without snowfall in St. Louis.

Daylight

In Octubre, the average length of the day in St. Louis is 11.2h.

Sunshine

In St. Louis, the average sunshine in Octubre is 6.7h.

UV index

The average daily maximum UV index in St. Louis is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In Octubre, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Octubre in St. Louis?

In Octubre, in St. Louis, Missouri, the average high-temperature is 68.5°F (20.3°C), and the average low-temperature is 48.9°F (9.4°C).

What is the average humidity in Octubre in St. Louis?

In Octubre, the average relative humidity in St. Louis is 68.7%.

How much does it rain in St. Louis in Octubre?

In Octubre, the rain falls for 8.7 days. Throughout Octubre, 3.33" (84.6mm) of precipitation is accumulated.

Does it snow in St. Louis in Octubre?

In St. Louis, in Octubre, it doesn't snow. In Noviembre, it regularly snows.

When it does not snow in St. Louis?

In St. Louis, Missouri, snow does not fall in Mayo through Octubre.

What is the average length of the day in Octubre in St. Louis?

In St. Louis, Missouri, the average length of the day in Octubre is 11.2h.

How many hours of sunshine does St. Louis have in Octubre?

In Octubre, the average sunshine in St. Louis, Missouri, is 6.7h.

What is the UV index intensity in Octubre in St. Louis?

The average daily maximum UV index in Octubre is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV radiation.
Average temperature in October - St. Louis, MO
  • Average high temperature in October: 68.5°F

The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in October: 49°F

The month with the highest average low temperature is July (71°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).

Average humidity in October - St. Louis, MO
  • Average humidity in October: 68.7%

The month with the highest relative humidity is December (75.8%).
The month with the lowest relative humidity is April (63.5%).

Average rainfall in October - St. Louis, MO
  • Average rainfall in October: 3.3"

The wettest month (with the highest rainfall) is May (4.7").
The driest month (with the lowest rainfall) is February (2.2").

Average rainfall days in October - St. Louis, MO
  • Average rainfall days in October: 8.7 days

The month with the highest number of rainy days is May (11.9 days).
The month with the lowest number of rainy days is September (7.4 days).

Average snowfall in October - St. Louis, MO
  • Average snowfall in October: 0"

The month with the highest snowfall is January (5.6").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average snowfall days in October - St. Louis, MO
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is January (4.7 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average daylight in October / Average sunshine in October - St. Louis, MO
  • Average daylight in October: 11.2h

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in October: 6.7h

The month with most sunshine is July (Average sunshine: 10h).
The month with least sunshine is December (Average sunshine: 4.2h).

Average UV index in October - St. Louis, MO
  • Average UV index in October: 4

Months with the highest UV index are June, July and August (UV index 9).
Months with the lowest UV index are January and December (UV index 2).