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 shift in Alton's weather is noticeable as September turns into October, with the average high temperature decreasing from a moderately hot 74.3°F (23.5°C) to a refreshing 58.1°F (14.5°C). Alton registers a consistent average low-temperature of 42.6°F (5.9°C) during October.Humidity
October is the least humid month, with an average relative humidity of 67%.Rainfall
In Alton, in October, it is raining for 9.9 days, with typically 2.2" (56mm) of accumulated precipitation. In Alton, during the entire year, the rain falls for 124 days and collects up to 24.09" (612mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Alton. October is the first month it typically snows in Alton, Iowa. Throughout October, in the average 1.6 snowfall days, it receives 0.71" (18mm) of snow. In Alton, during the entire year, snow falls for 49.5 days and aggregates up to 18.39" (467mm) of snow.Daylight
The average length of the day in October in Alton, Iowa, is 11h and 1min.On the first day of the month, sunrise is at 7:22 am and sunset at 7:04 pm. On the last day of October, in Alton, sunrise is at 7:58 am and sunset at 6:17 pm CDT.
Sunshine
In Alton, the average sunshine in October is 5.9h.UV index
The average daily maximum UV index in October in Alton is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In October, a regular UV index of 3 translates into these guidelines:
Guard yourself - Avoiding sunburn is suggested. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
What is the usual temperature for Alton in October?
What is the least humid month in Alton?
What is the average humidity in October in Alton?
How many days does it rain in October in Alton?
When does it start snowing in Alton?
What is the average length of the day in October in Alton?
When are sunrise and sunset in October in Alton?
How long on average sun shines in October in Alton?
What is the UV index reading in October in Alton?
Average temperature in October
Alton, IA
- Average high temperature in October: 58.1°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (24.6°F).
- Average low temperature in October: 42.6°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).
Average pressure in October
Alton, IA
- Average pressure in October: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in October
Alton, IA
- Average wind speed in October: 10.3mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in October
Alton, IA
- Average humidity in October: 67%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (67%).
Average rainfall in October
Alton, IA
- Average rainfall in October: 2.2"
The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (0.79").
Average rainfall days in October
Alton, IA
- Average rainfall days in October: 9.9 days
The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in October
Alton, IA
- Average snowfall in October: 0.71"
The month with the highest snowfall is February (4.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Alton, IA
- Average snowfall days in October: 1.6 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Alton, IA
- Average daylight in October: 11h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- 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: 3h and 54min).
Average sunshine days in October
Alton, IA
- Average sunshine days in October: 18 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in October
Alton, IA
- Average UV index in October: 3
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
Alton, IA
- Average cloud cover in October: 35
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in October
Alton, IA
- Average visibility in October: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Alton, Iowa, USA
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