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
August's transformation into September witnesses an average high-temperature of a still moderately hot 77.9°F (25.5°C), noting a minor change from the preceding month. Sumner experiences a mean low-temperature of 57.7°F (14.3°C) during September.Humidity
In September, the average relative humidity is 76%.Rainfall
In September, the rain falls for 8.2 days. Throughout September, 1.06" (27mm) of precipitation is accumulated. In Sumner, during the entire year, the rain falls for 101.9 days and collects up to 10.59" (269mm) of precipitation.Snowfall
In Sumner, Missouri, snow does not fall in May through September.Daylight
In Sumner, Missouri, the average length of the day in September is 12h and 26min.On the first day of September in Sumner, Missouri, sunrise is at 6:41 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:56 pm CDT.
Sunshine
In Sumner, the average sunshine in September is 9.4h.UV index
In Sumner, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Frequently asked questions
What are the temperatures in Sumner in September?
What is the average humidity in September in Sumner?
How many days does it rain in September in Sumner?
When it does not snow in Sumner?
Does it snow in Sumner in September?
What is the average length of the day in September in Sumner?
When are sunrise and sunset in September in Sumner?
How long on average sun shines in September in Sumner?
What is the UV index reading in September in Sumner?
Average temperature in September
Sumner, MO
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in September
Sumner, MO
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Sumner, MO
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in September
Sumner, MO
- Average humidity in September: 76%
The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Sumner, MO
- Average rainfall in September: 1.06"
The wettest months (with the highest rainfall) are May and June (1.46").
The driest month (with the least rainfall) is December (0.43").
Average rainfall days in September
Sumner, MO
- Average rainfall days in September: 8.2 days
The month with the highest number of rainy days is May (12.3 days).
The month with the least rainy days is January (4.2 days).
Average snowfall in September
Sumner, MO
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Sumner, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sumner, MO
- 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: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in September
Sumner, MO
- Average sunshine days in September: 19.9 days
The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is May (13.8 days).
Average UV index in September
Sumner, MO
- Average UV index in September: 5
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, November and December (UV index 2).
Average cloud cover in September
Sumner, MO
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Sumner, MO
- 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).
Sumner, Missouri, USA
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