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
A subtle change in temperatures is noted as August gives way to September, with average highs reducing from a moderately hot 76.8°F (24.9°C) to a pleasant 69.8°F (21°C). The average temperature during September nights in Marlow is registered at a cool 50.5°F (10.3°C).Humidity
In September, the average relative humidity in Marlow is 79%.Rainfall
In Marlow, during September, the rain falls for 12.3 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, in Marlow, there are 141.7 rainfall days, and 32.09" (815mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Marlow, New Hampshire.Daylight
In September, the average length of the day in Marlow is 12h and 29min.On the first day of the month, sunrise is at 6:13 am and sunset at 7:23 pm. On the last day of September, in Marlow, sunrise is at 6:45 am and sunset at 6:31 pm EDT.
Sunshine
The average sunshine in September is 7.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In September, an average UV index of 3 transforms into the following instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Marlow?
What is the average humidity in September in Marlow?
How much does it rain in Marlow in September?
When it does not snow in Marlow?
Does it snow in Marlow in September?
What is the average length of the day in September in Marlow?
What time are sunrise and sunset in September in Marlow?
How many hours of sunshine does Marlow have in September?
What is the UV index reading in September in Marlow?
Average temperature in September
Marlow, NH
- Average high temperature in September: 69.8°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in September: 50.5°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in September
Marlow, NH
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Marlow, NH
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are January and February (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Marlow, NH
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Marlow, NH
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is October (3.39").
The driest month (with the least rainfall) is August (2.28").
Average rainfall days in September
Marlow, NH
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is February (6 days).
Average snowfall in September
Marlow, NH
- Average snowfall in September: 0"
The month with the highest snowfall is February (11.5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Marlow, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Marlow, NH
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 7h and 5min
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 54min).
Average sunshine days in September
Marlow, NH
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is March (12 days).
Average UV index in September
Marlow, NH
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in September
Marlow, NH
- Average cloud cover in September: 42
The months with the most cloud cover are February and March (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in September
Marlow, NH
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Marlow, New Hampshire, USA
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