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 transition into September in Ottawa, Kansas, subtly indicates a reduction in the average high-temperature, down to a still warm 78.8°F (26°C) from August's moderately hot 85.3°F (29.6°C). During September, Ottawa's temperature falls to a steady low-temperature average of 60.1°F (15.6°C).Humidity
In September, the average relative humidity in Ottawa is 75%.Rainfall
In September, in Ottawa, Kansas, the rain falls for 11.5 days. Throughout September, 2.01" (51mm) of precipitation is accumulated. In Ottawa, during the entire year, the rain falls for 126.9 days and collects up to 23.5" (597mm) of precipitation.Snowfall
May through September are months without snowfall in Ottawa.Daylight
In Ottawa, Kansas, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:50 am and sunset at 7:50 pm. On the last day of September, in Ottawa, sunrise is at 7:16 am and sunset at 7:04 pm CDT.
Sunshine
In September, the average sunshine is 9.2h.UV index
In September, the average daily maximum UV index in Ottawa is 5. 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: In September, a daily maximum UV index of 5 leads to the following instructions:
Take precautions - Protection against sunburn is recommended. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Boost your sun resistance with garments that are densely woven yet spacious.
Frequently asked questions
What are September temperatures in Ottawa?
What is the average humidity in September in Ottawa?
How much does it rain in Ottawa in September?
When it does not snow in Ottawa?
Does it snow in Ottawa in September?
What is the average length of the day in September in Ottawa?
When is the sunrise / sunset in September in Ottawa?
How many hours of sunshine does Ottawa have in September?
How high is the UV index in September in Ottawa?
Average temperature in September
Ottawa, KS
- Average high temperature in September: 78.8°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 60.1°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in September
Ottawa, KS
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Ottawa, KS
- Average wind speed in September: 7.8mph
The windiest months (with the highest average wind speed) are March and April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Ottawa, KS
- Average humidity in September: 75%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are October and November (69%).
Average rainfall in September
Ottawa, KS
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in September
Ottawa, KS
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is December (4.5 days).
Average snowfall in September
Ottawa, KS
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Ottawa, KS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Ottawa, KS
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
Ottawa, KS
- Average sunshine days in September: 15.8 days
The months with the most sunshine days are January and December (22.6 days).
The month with the least sunshine days is May (12.7 days).
Average UV index in September
Ottawa, 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
Ottawa, KS
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are June and July (Cloud cover 25).
Average visibility in September
Ottawa, 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).
Ottawa, Kansas, USA
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