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 start of September signals a gentle decrease in the average high-temperature, transitioning from a moderately hot 74.8°F (23.8°C) in August to a refreshing 67.6°F (19.8°C). Throughout the September nights, Keene encounters a low-temperature of 47.7°F (8.7°C).Humidity
In September, the average relative humidity in Keene is 80%.Rainfall
September is the month with the least rainfall in Keene. Rain falls for 13.2 days and accumulates 1.93" (49mm) of precipitation.Snowfall
In Keene, snow does not fall in June through September.Daylight
In Keene, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 6:18 am and sunset at 7:30 pm. On the last day of September, in Keene, sunrise is at 6:52 am and sunset at 6:37 pm EDT.
Sunshine
The average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September in Keene is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 3 during September translates into the following directions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
What are September temperatures in Keene?
What is the average humidity in September in Keene?
What is the driest month in Keene?
How many days does it rain in September in Keene?
When it does not snow in Keene?
Does it snow in Keene in September?
How many hours of daylight does Keene have in September?
When are sunrise and sunset in September in Keene?
How long on average sun shines in September in Keene?
What is the UV index reading in September in Keene?
Average temperature in September
Keene, NY
- Average high temperature in September: 67.6°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in September: 47.7°F
The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (10.9°F).
Average pressure in September
Keene, NY
- 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
Keene, NY
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Keene, NY
- Average humidity in September: 80%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is May (76%).
Average rainfall in September
Keene, NY
- Average rainfall in September: 1.93"
The wettest months (with the highest rainfall) are June and October (3.39").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in September
Keene, NY
- Average rainfall days in September: 13.2 days
The months with the highest number of rainy days are May and June (18.3 days).
The month with the least rainy days is February (9.3 days).
Average snowfall in September
Keene, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (13.27").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Keene, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (22.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Keene, NY
- 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in September
Keene, NY
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is September (13.6 days).
The month with the least sunshine days is February (4.8 days).
Average UV index in September
Keene, NY
- 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 December (UV index 1).
Average cloud cover in September
Keene, NY
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 70).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in September
Keene, NY
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).
Keene, New York, USA
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