September weather forecast
Jewett City, CT

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Weather in September

September signals the onset of autumn—the season of harvest—in Jewett City. As leaves take on hues of red and orange, temperatures subside from the high summer levels. The average temperature lowers from 79.9°F (26.6°C) in August to 73.2°F (22.9°C) this month, creating comfortable outdoor conditions. It experiences the most dramatic transition in terms of daytime weather patterns. September is truly the gatekeeper of climate change in the city, duly delivering the transition from the sizzling summer to the colorful fall.

Temperature

Jewett City's weather subtly changes with the onset of September, barely falling from a warm 79.9°F (26.6°C) in August to a pleasant 73.2°F (22.9°C). The average low-temperature of 57.4°F (14.1°C) is witnessed during September.

Humidity

In September, the average relative humidity is 78%.

Rainfall

September is the month with the least rainfall. Rain falls for 11.4 days and accumulates 1.42" (36mm) of precipitation.

Snowfall

In Jewett City, snow does not fall in June through October.

Daylight

In Jewett City, the average length of the day in September is 12h and 28min.
On the first day of September, sunrise is at 6:14 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:30 pm EDT.

Sunshine

The average sunshine in September is 8.3h.

UV index

In Jewett City, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the maximum UV index of 4 translates into these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Jewett City in September?

Jewett City in September has an average high-temperature of 73.2°F (22.9°C) and an average low-temperature of 57.4°F (14.1°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in July is evaluated at 86°F (30°C).

What is the average humidity in September?

In Jewett City, the average relative humidity in September is 78%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 11.4 days and accumulates 1.42" (36mm) of precipitation.

How much does it rain in September?

In Jewett City, Connecticut, during September, the rain falls for 11.4 days and regularly aggregates up to 1.42" (36mm) of precipitation.

When it does not snow?

In Jewett City, snow does not fall in June through October.

What is the average length of the day in September?

In Jewett City, the average day length in September is 12h and 28min.

What time are sunrise and sunset in September in Jewett City?

In September, on the first day of the month, sunrise is at 6:14 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:30 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.3h.

What is the UV index reading in September?

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health risk 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 September
Jewett City, CT

Average temperature in September - Jewett City, CT
  • Average high temperature in September: 73.2°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in September: 57.4°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 (23.5°F).

Average pressure in September
Jewett City, CT

Average pressure in September - Jewett City, CT
  • Average pressure in September: 30.05"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 September
Jewett City, CT

Average wind speed in September - Jewett City, CT
  • Average wind speed in September: 7mph

The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in September
Jewett City, CT

Average humidity in September - Jewett City, CT
  • Average humidity in September: 78%

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

Average rainfall in September
Jewett City, CT

Average rainfall in September - Jewett City, CT
  • Average rainfall in September: 1.42"

The wettest month (with the highest rainfall) is December (3.5").
The driest month (with the least rainfall) is September (1.42").

Average rainfall days in September
Jewett City, CT

Average rainfall days in September - Jewett City, CT
  • Average rainfall days in September: 11.4 days

The months with the highest number of rainy days are May, June and July (15.8 days).
The months with the least rainy days are January and February (8.4 days).

Average snowfall in September
Jewett City, CT

Average snowfall in September - Jewett City, CT
  • Average snowfall in September: 0"

The month with the highest snowfall is March (3.7").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in September
Jewett City, CT

Average snowfall days in September - Jewett City, CT
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Jewett City, CT

Average daylight in September / Average sunshine in September - Jewett City, CT
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 8h and 2min

The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).

Average sunshine days in September
Jewett City, CT

Average sunshine days in September - Jewett City, CT
  • Average sunshine days in September: 16.6 days

The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (12.1 days).

Average UV index in September
Jewett City, CT

Average UV index in September - Jewett City, CT
  • Average UV index in September: 4

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 September
Jewett City, CT

Average cloud cover in September - Jewett City, CT
  • Average cloud cover in September: 38

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in September
Jewett City, CT

Average visibility in September - Jewett City, CT
  • Average visibility in September: 6mi

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

Jewett City, Connecticut, USA

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