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's onset introduces a mild reduction in the average high-temperature, from 81.7°F (27.6°C) in August to a still warm 75.9°F (24.4°C). An average nighttime temperature of 56.3°F (13.5°C) is observed in Delphos during September.Humidity
In September, the average relative humidity is 76%.Rainfall
In Delphos, in September, it is raining for 11 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, in Delphos, there are 126.9 rainfall days, and 22.6" (574mm) of precipitation is accumulated.Snowfall
In Delphos, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 27min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:49 pm. On the last day of September, in Delphos, sunrise is at 7:13 am and sunset at 7:00 pm CDT.
Sunshine
The average sunshine in September in Delphos is 9.3h.UV index
In Delphos, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In September, a regular UV index of 5 translates into these guidelines:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Frequently asked questions
What is the usual temperature for Delphos in September?
What is the average humidity in September in Delphos?
How many days does it rain in September in Delphos?
When it does not snow in Delphos?
Does it snow in Delphos in September?
How many hours of daylight does Delphos have in September?
When are sunrise and sunset in September in Delphos?
How many hours of sunshine does Delphos have in September?
How high is the UV index in September in Delphos?
Average temperature in September
Delphos, IA
- Average high temperature in September: 75.9°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in September
Delphos, IA
- Average pressure in September: 30.01"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
Delphos, IA
- Average wind speed in September: 7.8mph
The windiest months (with the highest average wind speed) are January, February and March (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in September
Delphos, IA
- Average humidity in September: 76%
The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Delphos, IA
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is June (3.86").
The driest months (with the least rainfall) are February and December (0.71").
Average rainfall days in September
Delphos, IA
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in September
Delphos, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.54").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Delphos, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Delphos, IA
- Average daylight in September: 12h and 2min
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 18min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in September
Delphos, IA
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is May (10.6 days).
Average UV index in September
Delphos, IA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Delphos, IA
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Delphos, 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).
Delphos, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location
