Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The transition to September results in a modest reduction in average high-temperature, moving from a warm 78.1°F (25.6°C) in August to a pleasant 70.7°F (21.5°C). Hartford throughout September, experiences an average nighttime temperature of 50.2°F (10.1°C).Humidity
In Hartford, the average relative humidity in September is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 10.7 days and typically collects 1.85" (47mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:18 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:35 pm EDT.
Sunshine
The average sunshine in September is 8.9h.UV index
In Hartford, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: In September, the maximum UV index of 4 suggests these recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Hartford in September?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Hartford have in September?
When are sunrise and sunset in September in Hartford?
How many hours of sunshine does Hartford have in September?
How high is the UV index in September in Hartford?
Average temperature in September
Hartford, NY
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in September: 50.2°F
The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in September
Hartford, NY
- 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 (29.92"Hg).
Average wind speed in September
Hartford, NY
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are January and April (7.2mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Hartford, NY
- Average humidity in September: 78%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Hartford, NY
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is June (2.91").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in September
Hartford, NY
- Average rainfall days in September: 10.7 days
The month with the highest number of rainy days is June (16.7 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in September
Hartford, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (10.59").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hartford, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hartford, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
Hartford, NY
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is September (16.7 days).
The months with the least sunshine days are February and April (10.8 days).
Average UV index in September
Hartford, NY
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Hartford, NY
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 60).
The months with the least cloud cover are July, August and September (Cloud cover 34).
Average visibility in September
Hartford, NY
- Average visibility in September: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Hartford, New York, USA
Weather forecast for your location
2. Allow the app to use your location