September weather forecastPassaic, MO
September
Weather in September
The first month of the autumn, September, is still a warm month in Passaic, Missouri, with an average temperature fluctuating between 78.8°F (26°C) and 60.1°F (15.6°C).Temperature
September's arrival subtly correlates with a reduction in the average high-temperature, down from 85.3°F (29.6°C) in August to a still warm 78.8°F (26°C). The average temperature in Passaic during September nights dips to a moderate 60.1°F (15.6°C).Humidity
In Passaic, the average relative humidity in September is 76%.Rainfall
In Passaic, during September, the rain falls for 12 days and regularly aggregates up to 2.05" (52mm) of precipitation. Throughout the year, in Passaic, there are 131.6 rainfall days, and 22.2" (564mm) of precipitation is accumulated.Snowfall
In Passaic, snow does not fall in April, June through September.Daylight
The average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:47 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:12 am and sunset at 7:01 pm CDT.
Sunshine
The average sunshine in September in Passaic is 9.3h.UV index
In Passaic, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 5 during September translates into these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Passaic, MO
- Average high temperature in September: 78.8°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (39.4°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 (24.8°F).
Average pressure in September
Passaic, MO
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Passaic, MO
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
Passaic, MO
- Average humidity in September: 76%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Passaic, MO
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in September
Passaic, MO
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in September
Passaic, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.69").
The months with the least snowfall are April, June, July, August and September (0").
Average snowfall days in September
Passaic, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.6 days).
The months with the least snowfall days are April, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Passaic, MO
- Average daylight in September: 12h and 24min
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 18min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in September
Passaic, MO
- Average sunshine days in September: 15.7 days
The months with the most sunshine days are January and December (22.8 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in September
Passaic, MO
- Average UV index in September: 5
The months with the highest UV index are May, 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
Passaic, MO
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in September
Passaic, 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).
