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
Saint Marys's weather undergoes a significant change with the arrival of October, as the average high-temperature drops from a moderately hot 75.7°F (24.3°C) in September to a comfortable 60.8°F (16°C). During the month of October, an average temperature of 44.6°F (7°C) is noted during the nights.Humidity
The least humid month is October, with an average relative humidity of 71%.Rainfall
In Saint Marys, in October, it is raining for 8.5 days, with typically 1.1" (28mm) of accumulated 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 in Saint Marys. October is the first month it typically snows. Throughout October, in the average 0.6 snowfall days, it receives 0.39" (10mm) of snow. Throughout the year, there are 31.9 snowfall days, and 10.12" (257mm) of snow is accumulated.Daylight
The average length of the day in October is 11h and 5min.On the first day of the month, sunrise is at 7:12 am and sunset at 6:56 pm. On the last day of October, sunrise is at 7:46 am and sunset at 6:11 pm CDT.
Sunshine
The average sunshine in October is 5.6h.UV index
The average daily maximum UV index in October is 2. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In October, the average maximum UV index of 2 translates into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in October?
What is the least humid month?
What is the average humidity in October?
How many days does it rain in October?
When does it start snowing?
How many hours of daylight does Saint Marys have in October?
When is the sunrise / sunset in October?
How many hours of sunshine does Saint Marys have in October?
What is the UV index intensity in October?
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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