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
As Siam steps into October, a marked temperature drop is observed, with the average high-temperature reducing from September's warm 76.6°F (24.8°C) to a comfortable 61.9°F (16.6°C). Throughout October, the temperature in Siam, Iowa, tends to fall to a consistent average low of 45.1°F (7.3°C).Humidity
With an average relative humidity of 69%, October is the least humid month.Rainfall
In Siam, in October, during 8.6 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. In Siam, during the entire year, the rain falls for 114.9 days and collects up to 18.39" (467mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. October is the first month it typically snows. Throughout October, in the average 0.5 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, there are 25.2 snowfall days, and 7.4" (188mm) of snow is accumulated.Daylight
In October, the average length of the day is 11h and 7min.On the first day of the month, sunrise is at 7:16 am and sunset at 7:01 pm. On the last day of October, sunrise is at 7:49 am and sunset at 6:16 pm CDT.
Sunshine
The average sunshine in October is 5.9h.UV index
In October, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 3 in October leads to these guidelines:
Heed the precautions - Suggestions to avoid sunburn are made. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Stay sun-safe with clothing that is both closely woven and worn loosely. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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?
What is the average length of the day in October?
What time are sunrise and sunset in October?
How many hours of sunshine does Siam have in October?
What is the UV index intensity in October?
Average temperature in October
Siam, IA
- Average high temperature in October: 61.9°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in October: 45.1°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in October
Siam, 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 (29.87"Hg).
Average wind speed in October
Siam, IA
- Average wind speed in October: 9mph
The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in October
Siam, IA
- Average humidity in October: 69%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is October (69%).
Average rainfall in October
Siam, IA
- Average rainfall in October: 1.38"
The wettest month (with the highest rainfall) is June (3.39").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in October
Siam, IA
- Average rainfall days in October: 8.6 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in October
Siam, IA
- Average snowfall in October: 0.2"
The month with the highest snowfall is January (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Siam, IA
- Average snowfall days in October: 0.5 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Siam, IA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in October: 5h and 5min
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 36min).
Average sunshine days in October
Siam, IA
- Average sunshine days in October: 20.2 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in October
Siam, IA
- Average UV index in October: 3
The months with the highest UV index are 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
Siam, IA
- Average cloud cover in October: 33
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in October
Siam, 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).
Siam, Iowa, USA
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