September weather forecastLincoln, NH
September
Weather in September
In September, the high temperatures in Lincoln start to decrease, moving down to 65.8°F (18.8°C), a noticeable dip from August's average high. The arrival of fall sees a reduction in daylight hours, setting a serene autumn ambiance across the city. Rainfall experiences a decrease as well, marking the drier season of the year with an average of 0.79" (20mm). With a cloud cover of 48%, September presents a mix of sunny days and breezy evenings. Moving into October, significant shifts in weather elements come into play, including lower temperatures and heightened rainfall.Temperature
The onset of September in Lincoln entails a subtle temperature shift, as the average high-temperature eases from a pleasant 73°F (22.8°C) in August to a refreshing 65.8°F (18.8°C). During the month of September, an average temperature of 46.6°F (8.1°C) is noted during the nights.Humidity
In September, the average relative humidity is 81%.Rainfall
The month with the least rainfall in Lincoln is September, when the rain falls for 10 days and typically collects 0.79" (20mm) of precipitation.Snowfall
June through September are months without snowfall in Lincoln.Daylight
The average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 6:10 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:28 pm EDT.
Sunshine
In Lincoln, the average sunshine in September is 7.6h.UV index
In Lincoln, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 3 during September leads to these advisories:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lincoln, NH
- Average high temperature in September: 65.8°F
The warmest month (with the highest average high temperature) is July (75°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in September: 46.6°F
The month with the highest average low temperature is July (54.3°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in September
Lincoln, 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
Lincoln, NH
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are January and February (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in September
Lincoln, 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 (78%).
Average rainfall in September
Lincoln, NH
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is April (1.5").
The driest month (with the least rainfall) is September (0.79").
Average rainfall days in September
Lincoln, NH
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is July (15.5 days).
The months with the least rainy days are January and February (5.3 days).
Average snowfall in September
Lincoln, NH
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lincoln, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lincoln, NH
- 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: 7h and 36min
The month with the most sunshine is August (Average sunshine: 9h and 18min).
The month with the least sunshine is February (Average sunshine: 2h and 54min).
Average sunshine days in September
Lincoln, NH
- 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 February (10.2 days).
Average UV index in September
Lincoln, 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
Lincoln, NH
- Average cloud cover in September: 48
The month with the most cloud cover is February (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 44).
Average visibility in September
Lincoln, NH
- Average visibility in September: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
