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
A decrease in the average high-temperature marks October, falling from September's warm 74.7°F (23.7°C) to a moderate 59.9°F (15.5°C). During October, Sully consistently records a temperature low averaging a chilly 44.2°F (6.8°C).Humidity
The least humid month is October, with an average relative humidity of 71%.Rainfall
In Sully, during October, the rain falls for 7 days and regularly aggregates up to 0.67" (17mm) of precipitation. In Sully, during the entire year, the rain falls for 106.7 days and collects up to 11.77" (299mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.5 snowfall days, it receives 0.16" (4mm) of snow. Throughout the year, in Sully, Iowa, there are 28.8 snowfall days, and 5.28" (134mm) of snow is accumulated.Daylight
In Sully, Iowa, the average length of the day in October is 11h and 4min.On the first day of the month, sunrise is at 7:09 am and sunset at 6:52 pm. On the last day of October, in Sully, sunrise is at 7:42 am and sunset at 6:06 pm CDT.
Sunshine
In Sully, the average sunshine in October is 5.6h.UV index
In October, the average daily maximum UV index 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: The daily high UV index of 2 in October translates into this advice:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures in Sully?
What is the least humid month in Sully?
What is the average humidity in October in Sully?
How many days does it rain in October in Sully?
When does it start snowing in Sully?
What is the average length of the day in October in Sully?
What time are sunrise and sunset in October in Sully?
How many hours of sunshine does Sully have in October?
How high is the UV index in October in Sully?
Average temperature in October
Sully, IA
- Average high temperature in October: 59.9°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.1°F).
- Average low temperature in October: 44.2°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in October
Sully, IA
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in October
Sully, IA
- Average wind speed in October: 9.6mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in October
Sully, IA
- Average humidity in October: 71%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall in October
Sully, IA
- Average rainfall in October: 0.67"
The wettest month (with the highest rainfall) is May (2.13").
The driest months (with the least rainfall) are January, February and December (0.39").
Average rainfall days in October
Sully, IA
- Average rainfall days in October: 7 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in October
Sully, IA
- Average snowfall in October: 0.16"
The month with the highest snowfall is January (1.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Sully, IA
- Average snowfall days in October: 0.5 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Sully, 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 12min).
- Average sunshine in October: 5h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in October
Sully, IA
- Average sunshine days in October: 21.6 days
The month with the most sunshine days is December (22.9 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in October
Sully, IA
- Average UV index in October: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in October
Sully, IA
- Average cloud cover in October: 37
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in October
Sully, IA
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Sully, Iowa, USA
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