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 records an average high-temperature of a still moderately hot 73.6°F (23.1°C), indicating a minor variation from the preceding month. Webb's temperature drops to an average low of 54.5°F (12.5°C) during the nights of September.Humidity
In Webb, Iowa, the average relative humidity in September is 74%.Rainfall
In September, in Webb, the rain falls for 11.6 days. Throughout September, 2.17" (55mm) of precipitation is accumulated. In Webb, during the entire year, the rain falls for 127.3 days and collects up to 23.58" (599mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Webb, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:45 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:02 pm CDT.
Sunshine
The average sunshine in September in Webb is 9h.UV index
In Webb, Iowa, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 4 during September translates into the following guidance:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun's radiation is especially intense around midday; try to stay in shade during this period. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Webb?
What is the average humidity in September in Webb?
How many days does it rain in September in Webb?
When it does not snow in Webb?
Does it snow in Webb in September?
How many hours of daylight does Webb have in September?
What time are sunrise and sunset in September in Webb?
How many hours of sunshine does Webb have in September?
How high is the UV index in September in Webb?
Average temperature in September
Webb, IA
- Average high temperature in September: 73.6°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in September
Webb, IA
- Average pressure in September: 30"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
Webb, IA
- Average wind speed in September: 8.8mph
The windiest months (with the highest average wind speed) are January and April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in September
Webb, IA
- Average humidity in September: 74%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (68%).
Average rainfall in September
Webb, IA
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in September
Webb, IA
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is June (18.3 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in September
Webb, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.96").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Webb, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Webb, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 0min
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 6min).
Average sunshine days in September
Webb, IA
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is June (9.6 days).
Average UV index in September
Webb, 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 February (UV index 1).
Average cloud cover in September
Webb, IA
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Webb, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Webb, Iowa, USA
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