October weather forecast
Columbia, CT

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Weather in October

October, the same as September, is another comfortable autumn month in Columbia, Connecticut, with an average temperature varying between 61°F (16.1°C) and 46.4°F (8°C).

Temperature

October's onset brings a reduction in the average high-temperature, from an agreeable 73.2°F (22.9°C) in September to an enjoyable 61°F (16.1°C). October is noted for a mean low-temperature of 46.4°F (8°C).

Humidity

The months with the highest humidity are February and October, with an average relative humidity of 79%.

Rainfall

In Columbia, during October, the rain falls for 14.2 days and regularly aggregates up to 3.07" (78mm) of precipitation. Throughout the year, in Columbia, there are 164.2 rainfall days, and 33.74" (857mm) of precipitation is accumulated.

Snowfall

June through October are months without snowfall.

Daylight

The average length of the day in October in Columbia is 11h and 4min.
On the first day of October, sunrise is at 6:46 am and sunset at 6:30 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:44 pm EDT.

Sunshine

In October, the average sunshine is 5.8h.

UV index

In October, the average daily maximum UV index in Columbia is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In October, the maximum UV index of 3 translates into these guidelines:
Take precautions - Protection against skin and eye damage is obliged. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Updated: Jul 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are October temperatures?

An average high-temperature, in October, in Columbia, is 61°F (16.1°C) and the average low-temperature is 46.4°F (8°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, in July is evaluated at 87.8°F (31°C).

What is the most humid month?

February and October, with an average relative humidity of 79%, are most humid months in Columbia.

What is the average humidity in October?

In Columbia, the average relative humidity in October is 79%.

How many days does it rain in October?

In October, the rain falls for 14.2 days. Throughout October, 3.07" (78mm) of precipitation is accumulated.

When it does not snow?

June through October are months without snowfall.

Does it snow in October?

In Columbia, in October, it doesn't snow. In November, it regularly snows.

How many hours of daylight does Columbia have in October?

The average day length in October is 11h and 4min.

When is the sunrise / sunset in October?

In October, on the first day of the month, sunrise is at 6:46 am and sunset at 6:30 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:44 pm EDT.

How long on average sun shines in October?

In October, the average sunshine duration is 5.8h.

What is the UV index intensity in October?

In October, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Columbia, CT

Average temperature in October - Columbia, CT
  • Average high temperature in October: 61°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in October: 46.4°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in October
Columbia, CT

Average pressure in October - Columbia, CT
  • Average pressure in October: 30.01"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in October
Columbia, CT

Average wind speed in October - Columbia, CT
  • Average wind speed in October: 7.4mph

The windiest months (with the highest average wind speed) are January and March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in October
Columbia, CT

Average humidity in October - Columbia, CT
  • Average humidity in October: 79%

The months with the highest relative humidity are February and October (79%).
The month with the lowest relative humidity is April (72%).

Average rainfall in October
Columbia, CT

Average rainfall in October - Columbia, CT
  • Average rainfall in October: 3.07"

The wettest month (with the highest rainfall) is December (3.46").
The driest month (with the least rainfall) is September (1.73").

Average rainfall days in October
Columbia, CT

Average rainfall days in October - Columbia, CT
  • Average rainfall days in October: 14.2 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.1 days).

Average snowfall in October
Columbia, CT

Average snowfall in October - Columbia, CT
  • Average snowfall in October: 0"

The month with the highest snowfall is March (4.41").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in October
Columbia, CT

Average snowfall days in October - Columbia, CT
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in October /
Average sunshine in October
Columbia, CT

Average daylight in October / Average sunshine in October - Columbia, CT
  • 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 5min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).

Average sunshine days in October
Columbia, CT

Average sunshine days in October - Columbia, CT
  • Average sunshine days in October: 14.5 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.8 days).

Average UV index in October
Columbia, CT

Average UV index in October - Columbia, CT
  • 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, March, November and December (UV index 2).

Average cloud cover in October
Columbia, CT

Average cloud cover in October - Columbia, CT
  • Average cloud cover in October: 43

The months with the most cloud cover are February, March, May and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in October
Columbia, CT

Average visibility in October - Columbia, CT
  • Average visibility in October: 6mi

The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).

Columbia, Connecticut, USA

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