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 shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from a tropical 87.4°F (30.8°C) to a moderately hot 79.7°F (26.5°C). In Jamestown, the average nighttime temperature during September is a moderate 60.3°F (15.7°C).Humidity
In September, the average relative humidity in Jamestown is 66%.Rainfall
In Jamestown, in September, during 10.5 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. In Jamestown, Kansas, during the entire year, the rain falls for 106.2 days and collects up to 22.24" (565mm) of precipitation.Snowfall
In Jamestown, snow does not fall in June through September.Daylight
The average length of the day in September in Jamestown is 12h and 26min.On the first day of the month, sunrise is at 7:00 am and sunset at 8:02 pm. On the last day of September, in Jamestown, sunrise is at 7:27 am and sunset at 7:14 pm CDT.
Sunshine
In Jamestown, the average sunshine in September is 8.7h.UV index
In Jamestown, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Adopt protective measures - It is advised to guard against sun damage. To protect against the Sun's most potent rays, avoid direct exposure around midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Jamestown?
What is the average humidity in September in Jamestown?
How many days does it rain in September in Jamestown?
When it does not snow in Jamestown?
Does it snow in Jamestown in September?
What is the average length of the day in September in Jamestown?
What time are sunrise and sunset in September in Jamestown?
How long on average sun shines in September in Jamestown?
How high is the UV index in September in Jamestown?
Average temperature in September
Jamestown, KS
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in September: 60.3°F
The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in September
Jamestown, KS
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Jamestown, KS
- Average wind speed in September: 9.6mph
The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in September
Jamestown, KS
- Average humidity in September: 66%
The months with the highest relative humidity are January and May (72%).
The month with the lowest relative humidity is October (62%).
Average rainfall in September
Jamestown, KS
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days in September
Jamestown, KS
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in September
Jamestown, KS
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Jamestown, KS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Jamestown, KS
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Jamestown, KS
- Average sunshine days in September: 18.5 days
The months with the most sunshine days are November and December (24.3 days).
The month with the least sunshine days is June (14.2 days).
Average UV index in September
Jamestown, KS
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Jamestown, KS
- Average cloud cover in September: 26
The month with the most cloud cover is March (Cloud cover 40).
The months with the least cloud cover are June and July (Cloud cover 23).
Average visibility in September
Jamestown, KS
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Jamestown, Kansas, USA
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