September weather forecastMachias, ME
September
Weather in September
In September, the autumn equinox introduces the shift towards cooler weather in Machias. A drop in temperatures signifies the departure of summer and makes way to lovely fall ambiance. The start of the fall season is not overwhelmingly cold but relatively mild, with plenty of sunny days. The days grow shorter, and leaves begin to change in color by the end of the month. Although the wind strengthens a bit, it is still mild, adding to the crisp fall environment.Temperature
At the start of September, Machias's average high-temperature reaches a still enjoyable 63.5°F (17.5°C), subtly different from the preceding month. Throughout September, Machias reports a steady low-temperature average of 54.5°F (12.5°C), slightly lower than its daytime counterpart.Humidity
The average relative humidity in September is 80%.Rainfall
In September, the rain falls for 11 days. Throughout September, 2.09" (53mm) of precipitation is accumulated. In Machias, during the entire year, the rain falls for 143.2 days and collects up to 29.37" (746mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Machias, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 5:53 am and sunset at 7:06 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 6:11 pm EDT.
Sunshine
In September, the average sunshine in Machias, Maine, is 7.8h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A typical high UV index of 4 in September suggests the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Machias, ME
- Average high temperature in September: 63.5°F
The warmest month (with the highest average high temperature) is August (67.8°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is August (59.4°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in September
Machias, ME
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is September (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Machias, ME
- Average wind speed in September: 9.3mph
The windiest month (with the highest average wind speed) is January (13.9mph).
The calmest months (with the lowest average wind speed) are July and August (8mph).
Average humidity in September
Machias, ME
- Average humidity in September: 80%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is November (77%).
Average rainfall in September
Machias, ME
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is December (3.23").
The driest month (with the least rainfall) is August (1.65").
Average rainfall days in September
Machias, ME
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is February (7.5 days).
Average snowfall in September
Machias, ME
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.64").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Machias, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.8 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
Machias, ME
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in September
Machias, ME
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is August (19.4 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in September
Machias, ME
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Machias, ME
- Average cloud cover in September: 36
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Machias, ME
- 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).
