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
The start of September comes with a small reduction in the average high-temperature, subtly receding from 79.3°F (26.3°C) in August to a still warm 73.6°F (23.1°C). An average temperature of 54.5°F (12.5°C) is recorded in Andrew during the nights in September.Humidity
In Andrew, the average relative humidity in September is 78%.Rainfall
In Andrew, Iowa, in September, during 11.6 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. Throughout the year, in Andrew, there are 143.3 rainfall days, and 29.76" (756mm) of precipitation is accumulated.Snowfall
In Andrew, Iowa, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 6:28 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:45 pm CDT.
Sunshine
The average sunshine in September in Andrew, Iowa, is 9.2h.UV index
In Andrew, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The average daily UV index of 4 in September transforms into the following instructions:
Guard yourself - Precautionary measures against sun damage are advocated. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Frequently asked questions
What are September temperatures in Andrew?
What is the average humidity in September in Andrew?
How many days does it rain in September in Andrew?
When it does not snow in Andrew?
Does it snow in Andrew in September?
What is the average length of the day in September in Andrew?
When are sunrise and sunset in September in Andrew?
How many hours of sunshine does Andrew have in September?
What is the UV index intensity in September in Andrew?
Average temperature in September
Andrew, IA
- Average high temperature in September: 73.6°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (25.9°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 (13.3°F).
Average pressure in September
Andrew, IA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Andrew, IA
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in September
Andrew, IA
- Average humidity in September: 78%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Andrew, IA
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days in September
Andrew, IA
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Andrew, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.2").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Andrew, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Andrew, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The months with the least sunshine are January and February (Average sunshine: 3h and 54min).
Average sunshine days in September
Andrew, IA
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is May (10.2 days).
Average UV index in September
Andrew, IA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Andrew, IA
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in September
Andrew, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Andrew, Iowa, USA
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