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
The onset of September aligns with a soft reduction in the average high-temperature, gently falling from a moderately hot 76.6°F (24.8°C) in August to an agreeable 68.9°F (20.5°C). Throughout September, Lempster anticipates an average low-temperature of 49.3°F (9.6°C).Humidity
In September, the average relative humidity is 80%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.5 days and typically collects 2.05" (52mm) 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 6:13 am and sunset at 7:23 pm. On the last day of September, sunrise is at 6:45 am and sunset at 6:31 pm EDT.
Sunshine
In Lempster, the average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index in Lempster is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Lempster?
What is the average humidity in September in Lempster?
What is the driest month in Lempster?
How many days does it rain in September in Lempster?
When it does not snow in Lempster?
Does it snow in Lempster in September?
How many hours of daylight does Lempster have in September?
What time are sunrise and sunset in September in Lempster?
How long on average sun shines in September in Lempster?
What is the UV index intensity in September in Lempster?
Average temperature in September
Lempster, NH
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (25.9°F).
- Average low temperature in September: 49.3°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in September
Lempster, 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 (29.91"Hg).
Average wind speed in September
Lempster, NH
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are January, February, March and April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Lempster, NH
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Lempster, NH
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is October (3.39").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in September
Lempster, NH
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in September
Lempster, NH
- Average snowfall in September: 0"
The month with the highest snowfall is February (11.18").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lempster, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lempster, 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 0min).
- 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 0min).
Average sunshine days in September
Lempster, NH
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is February (11.3 days).
Average UV index in September
Lempster, NH
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in September
Lempster, NH
- Average cloud cover in September: 40
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Lempster, 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).
Lempster, New Hampshire, USA
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