September weather forecastWestview, IA
September
Weather in September
The first month of the autumn, September, is still a warm month in Westview, Iowa, with an average temperature fluctuating between 73.9°F (23.3°C) and 54.5°F (12.5°C).Temperature
The onset of September marks an average high-temperature of a still moderately hot 73.9°F (23.3°C), hardly differing from August's 78.8°F (26°C). The nighttime temperature, during September, averages of 54.5°F (12.5°C).Humidity
In September, the average relative humidity is 74%.Rainfall
In Westview, during September, the rain falls for 9.4 days and regularly aggregates up to 0.83" (21mm) of precipitation. Throughout the year, in Westview, there are 93.7 rainfall days, and 9.29" (236mm) of precipitation is accumulated.Snowfall
In Westview, snow does not fall in May through September.Daylight
In Westview, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:44 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:01 pm CDT.
Sunshine
In Westview, the average sunshine in September is 9.2h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Act with care - The need to guard against sun damage is communicated. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Westview, IA
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (24.4°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 (11.8°F).
Average pressure in September
Westview, 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
Westview, IA
- Average wind speed in September: 8.6mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in September
Westview, 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
Westview, IA
- Average rainfall in September: 0.83"
The wettest month (with the highest rainfall) is May (1.38").
The driest month (with the least rainfall) is January (0.28").
Average rainfall days in September
Westview, IA
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is May (13 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
Westview, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.05").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Westview, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Westview, IA
- Average daylight in September: 12h and 30min
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 12min
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 6min).
Average sunshine days in September
Westview, IA
- Average sunshine days in September: 18.6 days
The month with the most sunshine days is November (23.3 days).
The month with the least sunshine days is June (14.7 days).
Average UV index in September
Westview, IA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Westview, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Westview, IA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
