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
September heralds a minor drop in average high-temperature, sliding from August's moderately hot 79.3°F (26.3°C) to a pleasant 71.4°F (21.9°C). Stillwater registers a consistent average low-temperature of 51.4°F (10.8°C) during September.Humidity
In September, the average relative humidity is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 10.4 days and typically collects 1.85" (47mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Stillwater, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:19 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:37 pm EDT.
Sunshine
In Stillwater, the average sunshine in September is 9.1h.UV index
In Stillwater, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Ensure safety - Recommendations to avert sunburn are presented. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Stillwater in September?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Stillwater have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Stillwater, NY
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in September: 51.4°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in September
Stillwater, NY
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Stillwater, NY
- Average wind speed in September: 5.4mph
The windiest months (with the highest average wind speed) are January and April (7.7mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Stillwater, NY
- Average humidity in September: 78%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Stillwater, NY
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is October (3.07").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in September
Stillwater, NY
- Average rainfall days in September: 10.4 days
The months with the highest number of rainy days are April and May (16.1 days).
The month with the least rainy days is February (8.6 days).
Average snowfall in September
Stillwater, NY
- Average snowfall in September: 0"
The month with the highest snowfall is January (8.19").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Stillwater, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Stillwater, NY
- 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: 9h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Stillwater, NY
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is February (11.3 days).
Average UV index in September
Stillwater, NY
- 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 January and December (UV index 1).
Average cloud cover in September
Stillwater, NY
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Stillwater, NY
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, March, August and September (5mi).
Stillwater, New York, USA
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