Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Transitioning from August to September involves a subtle drop in average high-temperatures, descending from a moderately hot 73.9°F (23.3°C) to a refreshing 66.6°F (19.2°C). September is noted for a mean low-temperature of 46.2°F (7.9°C).Humidity
In Gorham, the average relative humidity in September is 80%.Rainfall
The month with the least rainfall in Gorham is September, when the rain falls for 12.1 days and typically collects 1.85" (47mm) of precipitation.Snowfall
In Gorham, snow does not fall in June through September.Daylight
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, sunrise is at 6:42 am and sunset at 6:26 pm EDT.
Sunshine
The average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 3 during September translates into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Gorham have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Gorham have in September?
What is the UV index reading in September?
Average temperature in September
Gorham, 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
Gorham, 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
Gorham, 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
Gorham, 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
Gorham, 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
Gorham, 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
Gorham, 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
Gorham, 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
Gorham, NH
- Average daylight in September: 12h and 3min
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 2min
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
Gorham, 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
Gorham, 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
Gorham, 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
Gorham, 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).
Gorham, New Hampshire, USA
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