October weather forecast
Mehlville, MO

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Weather in October

Mehlville makes a noticeable shift into colder temperatures in October, marking the progression into the later part of the year. The humidity levels and rainfall undergo a decline, making way for a drier climate. The daytime shortens, while winter's frosty onset becomes apparent towards the end of the month. As a distinguishing fact, the wind speed records the second-highest average of the year in October, clocking 7.6mph (12.2km/h). Despite the cold, the town remains beautifully illuminated by sunshine for the major part of the day.

Temperature

October comes with a drop in the average high-temperature, falling from September's moderately hot 79.7°F (26.5°C) to a comfortable 66.4°F (19.1°C). Throughout the month of October, Mehlville sees a steady low-temperature average of 49.1°F (9.5°C).

Humidity

With an average relative humidity of 71%, October is the least humid month.

Rainfall

In Mehlville, in October, during 9.7 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. In Mehlville, Missouri, during the entire year, the rain falls for 146.1 days and collects up to 32.36" (822mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In October, the average length of the day is 11h and 11min.
On the first day of October, sunrise is at 6:57 am and sunset at 6:43 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 6:02 pm CDT.

Sunshine

In Mehlville, the average sunshine in October is 6.1h.

UV index

In October, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: A typical high UV index of 3 in October suggests the following recommendations:
Act with care - The need to guard against sun damage is communicated. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. 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. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in October?

In Mehlville, 66.4°F (19.1°C) is the average high-temperature and 49.1°F (9.5°C) is the average low-temperature during October. In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 96.8°F (36°C).

What is the least humid month?

The least humid month is October, with an average relative humidity of 71%.

What is the average humidity in October?

In October, the average relative humidity is 71%.

How many days does it rain in October?

In Mehlville, during October, the rain falls for 9.7 days and regularly aggregates up to 2.36" (60mm) of precipitation.

When it does not snow?

April through October are months without snowfall.

Does it snow in October?

In Mehlville, Missouri, in October, it doesn't snow. In November, it regularly snows.

What is the average length of the day in October?

In October, the average day length is 11h and 11min.

When is the sunrise / sunset in October?

In October, on the first day of the month, sunrise is at 6:57 am and sunset at 6:43 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 6:02 pm CDT.

How long on average sun shines in October in Mehlville?

In Mehlville, the average sunshine duration in October is 6.1h.

What is the UV index reading in October?

In Mehlville, Missouri, the average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
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 October
Mehlville, MO

Average temperature in October - Mehlville, MO
  • Average high temperature in October: 66.4°F

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in October: 49.1°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average pressure in October
Mehlville, MO

Average pressure in October - Mehlville, MO
  • Average pressure in October: 30.03"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in October
Mehlville, MO

Average wind speed in October - Mehlville, MO
  • Average wind speed in October: 7.6mph

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in October
Mehlville, MO

Average humidity in October - Mehlville, MO
  • Average humidity in October: 71%

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

Average rainfall in October
Mehlville, MO

Average rainfall in October - Mehlville, MO
  • Average rainfall in October: 2.36"

The wettest month (with the highest rainfall) is May (3.94").
The driest months (with the least rainfall) are February and November (1.77").

Average rainfall days in October
Mehlville, MO

Average rainfall days in October - Mehlville, MO
  • Average rainfall days in October: 9.7 days

The month with the highest number of rainy days is July (16.9 days).
The months with the least rainy days are January and February (6.8 days).

Average snowfall in October
Mehlville, MO

Average snowfall in October - Mehlville, MO
  • Average snowfall in October: 0"

The month with the highest snowfall is February (2.6").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in October
Mehlville, MO

Average snowfall days in October - Mehlville, MO
  • Average snowfall days in October: 0.1 days

The months with the highest number of snowfall days are January and February (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in October /
Average sunshine in October
Mehlville, MO

Average daylight in October / Average sunshine in October - Mehlville, MO
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in October: 6h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in October
Mehlville, MO

Average sunshine days in October - Mehlville, MO
  • Average sunshine days in October: 20.5 days

The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is June (11.6 days).

Average UV index in October
Mehlville, MO

Average UV index in October - Mehlville, MO
  • Average UV index in October: 3

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 and December (UV index 2).

Average cloud cover in October
Mehlville, MO

Average cloud cover in October - Mehlville, MO
  • Average cloud cover in October: 33

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in October
Mehlville, MO

Average visibility in October - Mehlville, MO
  • Average visibility in October: 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).

Mehlville, Missouri, USA

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