September weather forecast
Windsor Locks, CT

Share

Weather in September

The first month of the autumn, September, is also an agreeable month in Windsor Locks, Connecticut, with temperature in the range of an average high of 73.2°F (22.9°C) and an average low of 54.5°F (12.5°C).

Temperature

A mild shift in the average high-temperature occurs in September, reducing from a warm 80.6°F (27°C) in August to a pleasant 73.2°F (22.9°C). Windsor Locks observes an average low-temperature of 54.5°F (12.5°C) during September nights.

Humidity

In Windsor Locks, Connecticut, the average relative humidity in September is 77%.

Rainfall

September is the month with the least rainfall. Rain falls for 7.8 days and accumulates 0.43" (11mm) of precipitation.

Snowfall

In Windsor Locks, Connecticut, snow does not fall in June through October.

Daylight

The average length of the day in September in Windsor Locks is 12h and 28min.
On the first day of September, sunrise is at 6:17 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:33 pm EDT.

Sunshine

In Windsor Locks, the average sunshine in September is 8.6h.

UV index

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: A maximum high daily UV index of 4 during September translates into the following directions:
Guard yourself - Avoiding sunburn is suggested. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures in Windsor Locks?

September temperatures in Windsor Locks, Connecticut, vary between a high-temperature of 73.2°F (22.9°C) and a low-temperature of 54.5°F (12.5°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 84.2°F (29°C).

What is the average humidity in September in Windsor Locks?

In Windsor Locks, the average relative humidity in September is 77%.

What is the driest month in Windsor Locks?

September is the month with the least rainfall in Windsor Locks. Rain falls for 7.8 days and accumulates 0.43" (11mm) of precipitation.

How many days does it rain in September in Windsor Locks?

In Windsor Locks, Connecticut, in September, during 7.8 rainfall days, 0.43" (11mm) of precipitation is typically accumulated.

When it does not snow in Windsor Locks?

In Windsor Locks, snow does not fall in June through October.

What is the average length of the day in September in Windsor Locks?

In Windsor Locks, Connecticut, the average day length in September is 12h and 28min.

When are sunrise and sunset in September in Windsor Locks?

On the first day of September in Windsor Locks, Connecticut, sunrise is at 6:17 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:33 pm EDT.

How many hours of sunshine does Windsor Locks have in September?

The average sunshine duration in September is 8.6h.

How high is the UV index in September in Windsor Locks?

In Windsor Locks, Connecticut, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
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
Windsor Locks, CT

Average temperature in September - Windsor Locks, CT
  • Average high temperature in September: 73.2°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in September: 54.5°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in September
Windsor Locks, CT

Average pressure in September - Windsor Locks, CT
  • Average pressure in September: 30.06"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 September
Windsor Locks, CT

Average wind speed in September - Windsor Locks, CT
  • Average wind speed in September: 5.7mph

The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in September
Windsor Locks, CT

Average humidity in September - Windsor Locks, CT
  • Average humidity in September: 77%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (71%).

Average rainfall in September
Windsor Locks, CT

Average rainfall in September - Windsor Locks, CT
  • Average rainfall in September: 0.43"

The wettest months (with the highest rainfall) are July and October (1.14").
The driest month (with the least rainfall) is September (0.43").

Average rainfall days in September
Windsor Locks, CT

Average rainfall days in September - Windsor Locks, CT
  • Average rainfall days in September: 7.8 days

The month with the highest number of rainy days is June (11.7 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in September
Windsor Locks, CT

Average snowfall in September - Windsor Locks, CT
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.77").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in September
Windsor Locks, CT

Average snowfall days in September - Windsor Locks, CT
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (6.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Windsor Locks, CT

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

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 September: 8h and 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in September
Windsor Locks, CT

Average sunshine days in September - Windsor Locks, CT
  • Average sunshine days in September: 20.3 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is April (16.1 days).

Average UV index in September
Windsor Locks, CT

Average UV index in September - Windsor Locks, 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
Windsor Locks, CT

Average cloud cover in September - Windsor Locks, CT
  • Average cloud cover in September: 38

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

Average visibility in September
Windsor Locks, CT

Average visibility in September - Windsor Locks, CT
  • Average visibility in September: 5mi

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).

Windsor Locks, Connecticut, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location