October weather forecastArnold, MO
October
Weather in October
October, the same as September, is another refreshing autumn month in Arnold, Missouri, with an average temperature varying between 49.1°F (9.5°C) and 66.4°F (19.1°C).Temperature
With October's arrival, Arnold sees a decrease in average high-temperatures, moving from a warm 79.7°F (26.5°C) in September to a comfortable 66.4°F (19.1°C). The average temperature during October nights is registered at a frosty 49.1°F (9.5°C).Humidity
With an average relative humidity of 71%, October is the least humid month.Rainfall
In Arnold, during October, the rain falls for 9.7 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, there are 146.1 rainfall days, and 32.36" (822mm) of precipitation is accumulated.Snowfall
In Arnold, snow does not fall in April through October.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
The average sunshine in October is 6.1h.UV index
The average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In October, the maximum UV index of 3 suggests these recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Arnold, 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
Arnold, 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
Arnold, 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
Arnold, 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
Arnold, 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
Arnold, 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
Arnold, 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
Arnold, 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
Arnold, MO
- Average daylight in October: 11h and 12min
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 6min
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
Arnold, 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
Arnold, 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
Arnold, 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
Arnold, 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).
