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
The onset of October marks a clear decrease in the average high-temperature, dropping from a moderately hot 75.7°F (24.3°C) in September to a comfortable 60.8°F (16°C). Throughout October, an average nighttime temperature of 44.6°F (7°C) is experienced.Humidity
With an average relative humidity of 71%, October is the least humid month.Rainfall
In Saint Marys, during October, the rain falls for 8.5 days and regularly aggregates up to 1.1" (28mm) of precipitation. Throughout the year, there are 118.9 rainfall days, and 18.62" (473mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. October is the first month it typically snows in Saint Marys. Throughout October, in the average 0.6 snowfall days, it receives 0.39" (10mm) of snow. In Saint Marys, during the entire year, snow falls for 31.9 days and aggregates up to 10.12" (257mm) of snow.Daylight
The average length of the day in October in Saint Marys is 11h and 5min.On the first day of October in Saint Marys, sunrise is at 7:12 am and sunset at 6:56 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 6:11 pm CDT.
Sunshine
In Saint Marys, the average sunshine in October is 5.6h.UV index
In Saint Marys, the average daily maximum UV index in October is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 2 in October leads to these recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Frequently asked questions
What is the usual temperature for Saint Marys in October?
What is the least humid month in Saint Marys?
What is the average humidity in October in Saint Marys?
How much does it rain in Saint Marys in October?
When does it start to snow in Saint Marys?
What is the average length of the day in October in Saint Marys?
When are sunrise and sunset in October in Saint Marys?
How long on average sun shines in October in Saint Marys?
What is the UV index intensity in October in Saint Marys?
Average temperature in October
Saint Marys, IA
- Average high temperature in October: 60.8°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in October: 44.6°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in October
Saint Marys, IA
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in October
Saint Marys, IA
- Average wind speed in October: 9.4mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in October
Saint Marys, IA
- Average humidity in October: 71%
The months with the highest relative humidity are January and June (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in October
Saint Marys, IA
- Average rainfall in October: 1.1"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is December (0.55").
Average rainfall days in October
Saint Marys, IA
- Average rainfall days in October: 8.5 days
The months with the highest number of rainy days are May and June (15.9 days).
The month with the least rainy days is January (3.4 days).
Average snowfall in October
Saint Marys, IA
- Average snowfall in October: 0.39"
The month with the highest snowfall is February (3.03").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Saint Marys, IA
- Average snowfall days in October: 0.6 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Saint Marys, IA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in October: 5h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in October
Saint Marys, IA
- Average sunshine days in October: 19.6 days
The month with the most sunshine days is December (21.9 days).
The month with the least sunshine days is June (11 days).
Average UV index in October
Saint Marys, IA
- Average UV index in October: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in October
Saint Marys, IA
- Average cloud cover in October: 35
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in October
Saint Marys, IA
- 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).
Saint Marys, Iowa, USA
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