October weather forecast
Harwinton, CT

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Weather in October

October, like September, is another refreshing autumn month in Harwinton, Connecticut, with an average temperature varying between 44.6°F (7°C) and 59.4°F (15.2°C).

Temperature

October indicates a shift in the average high-temperature, from September's pleasant 72°F (22.2°C) to a moderate 59.4°F (15.2°C). In the month of October, an average of 44.6°F (7°C) marks the low-temperature.

Humidity

In Harwinton, the average relative humidity in October is 80%.

Rainfall

In Harwinton, during October, the rain falls for 14.5 days and regularly aggregates up to 3.27" (83mm) of precipitation. In Harwinton, Connecticut, during the entire year, the rain falls for 157.7 days and collects up to 32.72" (831mm) 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 0.5 snowfall days, it receives 0.55" (14mm) of snow. Throughout the year, there are 40 snowfall days, and 20.55" (522mm) of snow is accumulated.

Daylight

In October, the average length of the day is 11h and 4min.
On the first day of the month, sunrise is at 6:49 am and sunset at 6:33 pm. On the last day of October, sunrise is at 7:24 am and sunset at 5:47 pm EDT.

Sunshine

In October, the average sunshine is 5.6h.

UV index

In Harwinton, the average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: During October, 3 as the daily maximum UV index converts into the following advice:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Updated: Jul 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are October temperatures?

In October, in Harwinton, the average high-temperature is 59.4°F (15.2°C), and the average low-temperature is 44.6°F (7°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 86°F (30°C).

What is the average humidity in October?

In Harwinton, Connecticut, the average relative humidity in October is 80%.

How many days does it rain in October?

In Harwinton, in October, during 14.5 rainfall days, 3.27" (83mm) of precipitation is typically accumulated.

When does it start to snow?

October is the first month it typically snows in Harwinton. Throughout October, in the average 0.5 snowfall days, it receives 0.55" (14mm) of snow.

How many hours of daylight does Harwinton have in October?

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

When are sunrise and sunset in October?

On the first day of October in Harwinton, sunrise is at 6:49 am and sunset at 6:33 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:47 pm EDT.

How many hours of sunshine does Harwinton have in October?

In October, the average sunshine duration is 5.6h.

How high is the UV index in October?

In Harwinton, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe 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
Harwinton, CT

Average temperature in October - Harwinton, CT
  • Average high temperature in October: 59.4°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in October: 44.6°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).

Average pressure in October
Harwinton, CT

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

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in October
Harwinton, CT

Average wind speed in October - Harwinton, CT
  • Average wind speed in October: 7mph

The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in October
Harwinton, CT

Average humidity in October - Harwinton, CT
  • Average humidity in October: 80%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (73%).

Average rainfall in October
Harwinton, CT

Average rainfall in October - Harwinton, CT
  • Average rainfall in October: 3.27"

The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (2.01").

Average rainfall days in October
Harwinton, CT

Average rainfall days in October - Harwinton, CT
  • Average rainfall days in October: 14.5 days

The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (8.2 days).

Average snowfall in October
Harwinton, CT

Average snowfall in October - Harwinton, CT
  • Average snowfall in October: 0.55"

The month with the highest snowfall is February (5.28").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in October
Harwinton, CT

Average snowfall days in October - Harwinton, CT
  • Average snowfall days in October: 0.5 days

The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in October / Average sunshine in October - Harwinton, 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 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

Average sunshine days in October
Harwinton, CT

Average sunshine days in October - Harwinton, CT
  • Average sunshine days in October: 13.6 days

The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is June (11.8 days).

Average UV index in October
Harwinton, CT

Average UV index in October - Harwinton, CT
  • Average UV index in October: 3

The month with the highest UV index is June (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
Harwinton, CT

Average cloud cover in October - Harwinton, CT
  • Average cloud cover in October: 45

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 36).

Average visibility in October
Harwinton, CT

Average visibility in October - Harwinton, CT
  • Average visibility in October: 5mi

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

Harwinton, Connecticut, USA

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