Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
Start of October brings a shift in the average high-temperature, falling from September's warm 79.7°F (26.5°C) to a comfortable 67.1°F (19.5°C). Herculaneum experiences an average nighttime temperature of 49.1°F (9.5°C) in the month of October.Humidity
October is the least humid month, with an average relative humidity of 72%.Rainfall
In Herculaneum, in October, during 11 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. In Herculaneum, during the entire year, the rain falls for 155 days and collects up to 34.92" (887mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Herculaneum, the average length of the day in October is 11h and 11min.On the first day of the month, sunrise is at 6:57 am and sunset at 6:43 pm. On the last day of October, sunrise is at 7:27 am and sunset at 6:02 pm CDT.
Sunshine
The average sunshine in October is 6.2h.UV index
In October, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 3 during October leads to these instructions:
Act with care - The suggestion to avoid sunburn is emphasized. When the Sun is at its strongest around midday, find shade and limit exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures in Herculaneum?
What is the least humid month?
What is the average humidity in October in Herculaneum?
How much does it rain in October?
When it does not snow?
Does it snow in October?
How many hours of daylight does Herculaneum have in October?
When is the sunrise / sunset in October?
How many hours of sunshine does Herculaneum have in October?
How high is the UV index in October?
Average temperature in October
Herculaneum, MO
- Average high temperature in October: 67.1°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in October: 49.1°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in October
Herculaneum, 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
Herculaneum, MO
- Average wind speed in October: 7.3mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in October
Herculaneum, MO
- Average humidity in October: 72%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in October
Herculaneum, MO
- Average rainfall in October: 2.91"
The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is February (1.97").
Average rainfall days in October
Herculaneum, MO
- Average rainfall days in October: 11 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in October
Herculaneum, MO
- Average snowfall in October: 0"
The month with the highest snowfall is January (2.36").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in October
Herculaneum, MO
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Herculaneum, 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 36min).
- Average sunshine in October: 6h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in October
Herculaneum, MO
- Average sunshine days in October: 18.4 days
The month with the most sunshine days is December (19.2 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in October
Herculaneum, 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, November and December (UV index 2).
Average cloud cover in October
Herculaneum, MO
- Average cloud cover in October: 33
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in October
Herculaneum, 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).
Herculaneum, Missouri, USA
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