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
In Boston, the average high-temperature in September slightly decreases from 85.6°F (29.8°C) in August to a still warm 79.5°F (26.4°C). In the month of September, the average low-temperature usually rests at a mild 59.9°F (15.5°C).Humidity
August through October, with an average relative humidity of 74%, are the least humid months.Rainfall
The month with the least rainfall is September, when the rain falls for 13.5 days and typically collects 1.93" (49mm) of precipitation.Snowfall
In Boston, Kentucky, snow does not fall in May through October.Daylight
The average length of the day in September in Boston is 12h and 25min.On the first day of the month, sunrise is at 7:13 am and sunset at 8:11 pm. On the last day of September, in Boston, sunrise is at 7:38 am and sunset at 7:26 pm EDT.
Sunshine
In September, the average sunshine in Boston is 8.4h.UV index
In Boston, Kentucky, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Frequently asked questions
What are September temperatures in Boston?
What are the least humid months in Boston?
What is the average humidity in September in Boston?
What is the driest month in Boston?
How much does it rain in Boston in September?
When it does not snow in Boston?
What is the average length of the day in September in Boston?
When is the sunrise / sunset in September in Boston?
How long on average sun shines in September in Boston?
What is the UV index intensity in September in Boston?
Average temperature in September
Boston, KY
- Average high temperature in September: 79.5°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in September
Boston, KY
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Boston, KY
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in September
Boston, KY
- Average humidity in September: 74%
The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are August, September and October (74%).
Average rainfall in September
Boston, KY
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is April (3.46").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in September
Boston, KY
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (9.8 days).
Average snowfall in September
Boston, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Boston, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Boston, KY
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are January and December (Average sunshine: 4h and 30min).
Average sunshine days in September
Boston, KY
- Average sunshine days in September: 15 days
The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in September
Boston, KY
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Boston, KY
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Boston, KY
- Average visibility in September: 6mi
The months with the highest visibility are March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and May (5mi).
Boston, Kentucky, USA
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