October weather forecast
Princeton, IA

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Weather in October

October, the same as September, in Princeton, Iowa, is another mild autumn month, with temperature in the range of an average high of 60.4°F (15.8°C) and an average low of 44.2°F (6.8°C).

Temperature

October brings a minor decrease, with the average high-temperature reducing from a moderately hot 74.1°F (23.4°C) in September to a refreshing 60.4°F (15.8°C). Princeton experiences a mean temperature of 44.2°F (6.8°C) during October nights.

Humidity

With an average relative humidity of 73%, October is the least humid month.

Rainfall

In Princeton, in October, it is raining for 12.8 days, with typically 2.64" (67mm) of accumulated precipitation. In Princeton, during the entire year, the rain falls for 146.6 days and collects up to 28.86" (733mm) 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 0.43" (11mm) of snow. Throughout the year, in Princeton, there are 40.4 snowfall days, and 14.72" (374mm) of snow is accumulated.

Daylight

The average length of the day in October is 11h and 4min.
On the first day of the month, sunrise is at 6:59 am and sunset at 6:42 pm. On the last day of October, sunrise is at 7:33 am and sunset at 5:56 pm CDT.

Sunshine

In Princeton, the average sunshine in October is 5.4h.

UV index

In October, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 2 during October translates into the following directions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Updated: Feb 12, 2024 | Published by: Weather U.S. | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the usual temperature for Princeton in October?

In October, the average high-temperature and low-temperature in Princeton are 60.4°F (15.8°C) and 44.2°F (6.8°C) respectively.

What is the least humid month in Princeton?

The least humid month is October, with an average relative humidity of 73%.

What is the average humidity in October in Princeton?

In Princeton, the average relative humidity in October is 73%.

How much does it rain in Princeton in October?

In Princeton, Iowa, in October, it is raining for 12.8 days, with typically 2.64" (67mm) of accumulated precipitation.

When does it start to snow in Princeton?

October is the first month it typically snows in Princeton. Throughout October, in the average 0.5 snowfall days, it receives 0.43" (11mm) of snow.

What is the average length of the day in October in Princeton?

In Princeton, Iowa, the average day length in October is 11h and 4min.

What time are sunrise and sunset in October in Princeton?

On the first day of October in Princeton, Iowa, sunrise is at 6:59 am and sunset at 6:42 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 5:56 pm CDT.

How many hours of sunshine does Princeton have in October?

In October, the average sunshine duration in Princeton is 5.4h.

What is the UV index intensity in October in Princeton?

The average daily maximum UV index in October in Princeton, Iowa, is 2. A UV Index value of 2, and less, symbolizes a low health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Princeton, IA

Average temperature in October - Princeton, IA
  • Average high temperature in October: 60.4°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (26.8°F).

  • Average low temperature in October: 44.2°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).

Average pressure in October
Princeton, IA

Average pressure in October - Princeton, IA
  • Average pressure in October: 30.01"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in October
Princeton, IA

Average wind speed in October - Princeton, IA
  • Average wind speed in October: 9.4mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity in October
Princeton, IA

Average humidity in October - Princeton, IA
  • Average humidity in October: 73%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (73%).

Average rainfall in October
Princeton, IA

Average rainfall in October - Princeton, IA
  • Average rainfall in October: 2.64"

The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and February (1.34").

Average rainfall days in October
Princeton, IA

Average rainfall days in October - Princeton, IA
  • Average rainfall days in October: 12.8 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (5.5 days).

Average snowfall in October
Princeton, IA

Average snowfall in October - Princeton, IA
  • Average snowfall in October: 0.43"

The month with the highest snowfall is January (4.8").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in October
Princeton, IA

Average snowfall days in October - Princeton, IA
  • Average snowfall days in October: 0.5 days

The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in October /
Average sunshine in October
Princeton, IA

Average daylight in October / Average sunshine in October - Princeton, 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 August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in October
Princeton, IA

Average sunshine days in October - Princeton, IA
  • Average sunshine days in October: 16.3 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (10.3 days).

Average UV index in October
Princeton, IA

Average UV index in October - Princeton, IA
  • Average UV index in October: 2

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in October
Princeton, IA

Average cloud cover in October - Princeton, IA
  • Average cloud cover in October: 39

The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 30).

Average visibility in October
Princeton, IA

Average visibility in October - Princeton, 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).

Princeton, Iowa, USA

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