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
With the onset of October, Keystone's average high-temperature experiences a noticeable drop, receding from September's warm 74.3°F (23.5°C) to a mild 59.9°F (15.5°C). Keystone, during October, witnesses an average low-temperature of 44.1°F (6.7°C).Humidity
October is the least humid month in Keystone, with an average relative humidity of 72%.Rainfall
In Keystone, during October, the rain falls for 10.1 days and regularly aggregates up to 2.17" (55mm) of precipitation. In Keystone, during the entire year, the rain falls for 139 days and collects up to 29.49" (749mm) 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 0.6 snowfall days, it receives 0.39" (10mm) of snow. In Keystone, during the entire year, snow falls for 39 days and aggregates up to 16.69" (424mm) of snow.Daylight
The average length of the day in October is 11h and 4min.On the first day of October in Keystone, sunrise is at 7:06 am and sunset at 6:49 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 6:03 pm CDT.
Sunshine
The average sunshine in October in Keystone is 5.3h.UV index
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: The average daily UV index of 2 in October transforms into the following instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Frequently asked questions
What is the temperature in October in Keystone?
What is the least humid month in Keystone?
What is the average humidity in October in Keystone?
How many days does it rain in October in Keystone?
When does it start to snow in Keystone?
What is the average length of the day in October in Keystone?
What time are sunrise and sunset in October in Keystone?
How long on average sun shines in October in Keystone?
What are the months with the lowest UV index in Keystone?
How high is the UV index in October in Keystone?
Average temperature in October
Keystone, IA
- Average high temperature in October: 59.9°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (25.9°F).
- Average low temperature in October: 44.1°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in October
Keystone, IA
- Average pressure in October: 30"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in October
Keystone, IA
- Average wind speed in October: 9.8mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in October
Keystone, IA
- Average humidity in October: 72%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in October
Keystone, IA
- Average rainfall in October: 2.17"
The wettest month (with the highest rainfall) is May (4.61").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in October
Keystone, IA
- Average rainfall days in October: 10.1 days
The month with the highest number of rainy days is June (19.3 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in October
Keystone, IA
- Average snowfall in October: 0.39"
The month with the highest snowfall is January (5.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Keystone, IA
- Average snowfall days in October: 0.6 days
The month with the highest number of snowfall days is February (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Keystone, IA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in October: 5h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in October
Keystone, IA
- Average sunshine days in October: 19.2 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is June (8.4 days).
Average UV index in October
Keystone, IA
- Average UV index in October: 2
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in October
Keystone, IA
- Average cloud cover in October: 39
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in October
Keystone, IA
- Average visibility in October: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Keystone, Iowa, USA
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