September weather forecastPlattsmouth, NE
September
Weather in September
September in Plattsmouth marks a marked transition from the hot summer into the cooler autumn season. Rainfall averages decrease to around 2.52" (64mm), as a prelude to the more arid months of October and November. The temperature decline is evident, and the trees begin to adorn themselves in fall colors. With shorter days and longer nights, the city slowly marches towards the end of another active cycle, preparing for the calm of winter.Temperature
September implies a soft temperature shift, with average high-temperatures reducing from August's moderately hot 82.8°F (28.2°C) to a still warm 77°F (25°C). Throughout September, Plattsmouth experiences a low-temperature average of 57.4°F (14.1°C).Humidity
The average relative humidity in September in Plattsmouth is 73%.Rainfall
In Plattsmouth, Nebraska, during September, the rain falls for 11.7 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, in Plattsmouth, Nebraska, there are 122.8 rainfall days, and 26.69" (678mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Plattsmouth is 12h and 27min.On the first day of September, sunrise is at 6:51 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:06 pm CDT.
Sunshine
In Plattsmouth, the average sunshine in September is 8.9h.UV index
In Plattsmouth, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 4 in September translates into this advice:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Plattsmouth, NE
- Average high temperature in September: 77°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in September: 57.4°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in September
Plattsmouth, NE
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Plattsmouth, NE
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in September
Plattsmouth, NE
- Average humidity in September: 73%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is October (66%).
Average rainfall in September
Plattsmouth, NE
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is June (4.33").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days in September
Plattsmouth, NE
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is February (3.2 days).
Average snowfall in September
Plattsmouth, NE
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Plattsmouth, NE
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Plattsmouth, NE
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in September
Plattsmouth, NE
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in September
Plattsmouth, NE
- Average UV index in September: 4
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, October, November and December (UV index 2).
Average cloud cover in September
Plattsmouth, NE
- 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
Plattsmouth, NE
- 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).
