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
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a warm 78.6°F (25.9°C) to an agreeable 70.9°F (21.6°C). Throughout September, the average low-temperature in Epsom records at a cool 52.2°F (11.2°C).Humidity
In September, the average relative humidity in Epsom is 78%.Rainfall
The month with the least rainfall in Epsom is September, when the rain falls for 11.7 days and typically collects 1.65" (42mm) of precipitation.Snowfall
In Epsom, snow does not fall in June through September.Daylight
In Epsom, the average length of the day in September is 12h and 29min.On the first day of September in Epsom, New Hampshire, sunrise is at 6:10 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:27 pm EDT.
Sunshine
In Epsom, the average sunshine in September is 8.5h.UV index
In Epsom, New Hampshire, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 4 in September translates into these instructions:
Put precautions into practice - Protective measures against sun-induced damage are advised. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Frequently asked questions
What is the average September temperature in Epsom?
What is the average humidity in September in Epsom?
What is the driest month in Epsom?
How much does it rain in Epsom in September?
When it does not snow in Epsom?
Does it snow in Epsom in September?
What is the average length of the day in September in Epsom?
What time are sunrise and sunset in September in Epsom?
How long on average sun shines in September in Epsom?
How high is the UV index in September in Epsom?
Average temperature in September
Epsom, NH
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure in September
Epsom, 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 (29.92"Hg).
Average wind speed in September
Epsom, NH
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Epsom, NH
- Average humidity in September: 78%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Epsom, NH
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in September
Epsom, NH
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Epsom, NH
- Average snowfall in September: 0"
The month with the highest snowfall is February (8.5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Epsom, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Epsom, 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 3min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Epsom, NH
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is June (13 days).
Average UV index in September
Epsom, NH
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Epsom, NH
- Average cloud cover in September: 36
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Epsom, NH
- Average visibility in September: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Epsom, New Hampshire, USA
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