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 arrival of September coincides with an average high-temperature of an enjoyable 66.6°F (19.2°C), indicating a minimal shift from August's 71.4°F (21.9°C). Nighttime readings during September register a minimal drop from daytime highs, averaging at 62.4°F (16.9°C).Humidity
The average relative humidity in September is 80%.Rainfall
In Orleans, in September, it is raining for 5.5 days, with typically 0.47" (12mm) of accumulated precipitation. Throughout the year, in Orleans, there are 78.2 rainfall days, and 5.75" (146mm) of precipitation is accumulated.Snowfall
In Orleans, snow does not fall in April through October.Daylight
In Orleans, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:06 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 6:22 pm EDT.
Sunshine
In September, the average sunshine in Orleans is 8.6h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 4 during September translates into these guidelines:
Take precautions - Protection against sun damage is advised. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
What is the usual temperature for Orleans in September?
What is the average humidity in September in Orleans?
How much does it rain in Orleans in September?
When it does not snow in Orleans?
What is the average length of the day in September in Orleans?
When is the sunrise / sunset in September in Orleans?
How long on average sun shines in September in Orleans?
What is the UV index reading in September in Orleans?
Average temperature in September
Orleans, MA
- Average high temperature in September: 66.6°F
The warmest month (with the highest average high temperature) is August (71.4°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 62.4°F
The month with the highest average low temperature is August (67.8°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in September
Orleans, MA
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Orleans, MA
- Average wind speed in September: 13.4mph
The windiest month (with the highest average wind speed) is January (18.3mph).
The calmest month (with the lowest average wind speed) is August (11.4mph).
Average humidity in September
Orleans, MA
- Average humidity in September: 80%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (74%).
Average rainfall in September
Orleans, MA
- Average rainfall in September: 0.47"
The wettest month (with the highest rainfall) is October (0.87").
The driest months (with the least rainfall) are July and August (0.28").
Average rainfall days in September
Orleans, MA
- Average rainfall days in September: 5.5 days
The month with the highest number of rainy days is April (8.2 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in September
Orleans, MA
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Orleans, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Orleans, MA
- 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 month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in September
Orleans, MA
- Average sunshine days in September: 23.4 days
The month with the most sunshine days is September (23.4 days).
The month with the least sunshine days is February (19.8 days).
Average UV index in September
Orleans, MA
- Average UV index in September: 4
The months with the highest UV index are 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
Orleans, MA
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Orleans, MA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Orleans, Massachusetts, USA
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