September weather forecastBerlin, NH
September
Weather in September
September witnesses the onset of fall in Berlin, New Hampshire, USA, with temperatures starting to dip gradually, a decrease from the summer temperatures in August. There is a noticeable increase in rainfall to 1.85" (47mm) contributing to the onset of autumn rainfall. With the lack of snowfall and decrease in overall temperature, Berlin begins to transition into autumn. The city is known for its colorful foliage around this time, greatly aided by the shift in weather patterns. As the season shifts, the atmosphere of Berlin begins to cool down, signaling the coming of change.Temperature
In September, the average high-temperature marginally drops from a moderately hot 73.9°F (23.3°C) in August to a refreshing 66.6°F (19.2°C). The low-temperature average for Berlin during September stands at a frosty 46.2°F (7.9°C).Humidity
In Berlin, the average relative humidity in September is 80%.Rainfall
September is the month with the least rainfall. Rain falls for 12.1 days and accumulates 1.85" (47mm) of precipitation.Snowfall
In Berlin, snow does not fall in June through September.Daylight
In Berlin, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:08 am and sunset at 7:20 pm. On the last day of September, in Berlin, sunrise is at 6:42 am and sunset at 6:26 pm EDT.
Sunshine
In September, the average sunshine in Berlin is 8.3h.UV index
In Berlin, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Make use of precautions - It is urged to ward off sun damage. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Berlin, NH
- Average high temperature in September: 66.6°F
The warmest month (with the highest average high temperature) is July (75.6°F).
The month with the lowest average high temperature is January (23.2°F).
- Average low temperature in September: 46.2°F
The month with the highest average low temperature is July (53.6°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in September
Berlin, 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
Berlin, NH
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are January and February (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Berlin, NH
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
Berlin, NH
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is October (3.43").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in September
Berlin, NH
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is October (17.5 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in September
Berlin, NH
- Average snowfall in September: 0"
The month with the highest snowfall is February (12.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Berlin, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Berlin, 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 18min
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 36min).
Average sunshine days in September
Berlin, NH
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is February (6.9 days).
Average UV index in September
Berlin, NH
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Berlin, NH
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in September
Berlin, 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).
