September weather forecastBath, ME
September
Weather in September
September in Bath, Maine, commences the fall season with a gradual dip in temperatures. The decrease in humidity and cooler winds bring a crisp freshness to the air. The town begins to resemble an artist's palette with colorful leaves marking the start of the fall season. Reviving from the summer's heat, the landscape transforms, preparing for the colder days. September's weather gently eases residents into the upcoming fall weather, signaling the arrival of October's more profound changes.Temperature
The commencement of September indicates a gentle shift in the average high-temperature, receding from August's warm 73.4°F (23°C) to a comfortable 67.1°F (19.5°C). During the month of September, the temperature generally drops to a low average of 54.1°F (12.3°C).Humidity
In September, the average relative humidity is 80%.Rainfall
September is the month with the least rainfall. Rain falls for 11.2 days and accumulates 1.65" (42mm) of precipitation.Snowfall
In Bath, snow does not fall in June through September.Daylight
The average length of the day in September in Bath is 12h and 30min.On the first day of September, sunrise is at 6:03 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 6:21 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In Bath, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bath, ME
- Average high temperature in September: 67.1°F
The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in September
Bath, ME
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are September and November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Bath, ME
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in September
Bath, ME
- Average humidity in September: 80%
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is November (75%).
Average rainfall in September
Bath, ME
- Average rainfall in September: 1.65"
The wettest months (with the highest rainfall) are October and December (3.5").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in September
Bath, ME
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in September
Bath, ME
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Bath, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bath, ME
- Average daylight in September: 12h and 30min
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 30min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in September
Bath, ME
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is September (16.6 days).
The month with the least sunshine days is April (11.9 days).
Average UV index in September
Bath, ME
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Bath, ME
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Bath, 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).
