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 ushers in a minor alteration in Plano's climate, with the average high-temperature moving from August's 82°F (27.8°C) to a still warm 76.1°F (24.5°C). Throughout September, the temperature in Plano falls to an average low of 56.5°F (13.6°C).Humidity
In Plano, the average relative humidity in September is 77%.Rainfall
In Plano, in September, during 12.1 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. Throughout the year, in Plano, there are 143.2 rainfall days, and 27.48" (698mm) of precipitation is accumulated.Snowfall
In Plano, snow does not fall in June through September.Daylight
In Plano, Iowa, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:08 am and sunset at 6:55 pm CDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Frequently asked questions
What are September temperatures in Plano?
What is the average humidity in September in Plano?
How many days does it rain in September in Plano?
When it does not snow in Plano?
Does it snow in Plano in September?
What is the average length of the day in September in Plano?
What time are sunrise and sunset in September in Plano?
How many hours of sunshine does Plano have in September?
What is the UV index reading in September in Plano?
Average temperature in September
Plano, IA
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in September: 56.5°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in September
Plano, IA
- 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 (29.89"Hg).
Average wind speed in September
Plano, IA
- Average wind speed in September: 8mph
The windiest months (with the highest average wind speed) are January, February and March (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Plano, IA
- Average humidity in September: 77%
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Plano, IA
- Average rainfall in September: 2.8"
The wettest month (with the highest rainfall) is June (3.98").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in September
Plano, IA
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (5 days).
Average snowfall in September
Plano, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Plano, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Plano, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Plano, IA
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is June (8.8 days).
Average UV index in September
Plano, IA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Plano, IA
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July, August and September (Cloud cover 29).
Average visibility in September
Plano, IA
- 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).
Plano, Iowa, USA
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