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
With the arrival of September, Hillsboro notices a mild change in the average high-temperature, sliding from August's moderately hot 77.7°F (25.4°C) to an agreeable 70°F (21.1°C). Hillsboro records an average temperature drop to a fresh 50.5°F (10.3°C) in September.Humidity
The average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 12 days and accumulates 2.17" (55mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 29min.On the first day of the month, sunrise is at 6:12 am and sunset at 7:22 pm. On the last day of September, in Hillsboro, sunrise is at 6:44 am and sunset at 6:30 pm EDT.
Sunshine
In Hillsboro, the average sunshine in September is 8.2h.UV index
In Hillsboro, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Guard yourself - Avoiding sunburn is suggested. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Frequently asked questions
What is the average September temperature in Hillsboro?
What is the average humidity in September in Hillsboro?
What is the driest month in Hillsboro?
How much does it rain in Hillsboro in September?
When it does not snow in Hillsboro?
Does it snow in Hillsboro in September?
What is the average length of the day in September in Hillsboro?
When are sunrise and sunset in September in Hillsboro?
How many hours of sunshine does Hillsboro have in September?
What is the UV index reading in September in Hillsboro?
Average temperature in September
Hillsboro, NH
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in September: 50.5°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).
Average pressure in September
Hillsboro, 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
Hillsboro, NH
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are January and February (8mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Hillsboro, NH
- Average humidity in September: 79%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Hillsboro, NH
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is October (3.46").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in September
Hillsboro, NH
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is June (15.7 days).
The month with the least rainy days is January (7.6 days).
Average snowfall in September
Hillsboro, NH
- Average snowfall in September: 0"
The month with the highest snowfall is February (10.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hillsboro, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hillsboro, 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: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in September
Hillsboro, NH
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is September (16.1 days).
The month with the least sunshine days is March (12.1 days).
Average UV index in September
Hillsboro, NH
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Hillsboro, NH
- Average cloud cover in September: 40
The month with the most cloud cover is March (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Hillsboro, 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).
Hillsboro, New Hampshire, USA
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