September weather forecastBath, NH
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Bath, New Hampshire, with an average temperature ranging between min 46.9°F (8.3°C) and max 66.2°F (19°C).Temperature
The start of September involves a subtle temperature drop, shifting from a pleasant 73°F (22.8°C) in August to a refreshing 66.2°F (19°C). During September, the nighttime temperature averages of 46.9°F (8.3°C).Humidity
In September, the average relative humidity in Bath is 81%.Rainfall
In Bath, in September, during 9.2 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. Throughout the year, there are 121.7 rainfall days, and 10.83" (275mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 30min.On the first day of September, sunrise is at 6:11 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:29 pm EDT.
Sunshine
In September, the average sunshine is 8.1h.UV index
In Bath, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: An average maximum UV index of 3 in September leads to these recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bath, NH
- Average high temperature in September: 66.2°F
The warmest month (with the highest average high temperature) is July (75°F).
The month with the lowest average high temperature is January (21.9°F).
- Average low temperature in September: 46.9°F
The month with the highest average low temperature is July (55°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in September
Bath, NH
- 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 (29.91"Hg).
Average wind speed in September
Bath, NH
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Bath, NH
- Average humidity in September: 81%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
Bath, NH
- Average rainfall in September: 0.71"
The wettest months (with the highest rainfall) are June and July (1.18").
The driest months (with the least rainfall) are February and March (0.67").
Average rainfall days in September
Bath, NH
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is June (13.9 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in September
Bath, NH
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Bath, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (20.4 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, NH
- 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: 8h and 6min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in September
Bath, NH
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is February (8.5 days).
Average UV index in September
Bath, NH
- Average UV index in September: 3
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 and December (UV index 1).
Average cloud cover in September
Bath, NH
- Average cloud cover in September: 42
The month with the most cloud cover is February (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in September
Bath, NH
- Average visibility in September: 4mi
The months with the highest visibility are May, June, July and November (5mi).
The months with the lowest visibility are January, February, March, April, August, September, October and December (4mi).
